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README.1ST
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1992-08-08
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LEADTOOLS - DEMO
Copyright c LEAD Technologies, Inc. 1992 ALL RIGHTS RESERVED
JPEG4.ZIP LEADJPEG.ZIP are the official evaluation files of LEADTOOLS.
This file does not have the complete list of programs (functions) for you
to evaluate the capability of LEADTOOLS. This file is only in response
to the hundred of requests that we upload the files separately insetted of
one 700K file.
The file JPGF2F4.ZIP contains:
LCOMP4.EXE A file to file compression utility linked with LEADTOOLS.
LCOMP4.C The 'C' source of LCOMP4.EXE.
LDECOM4.EXE A file to file decompression utility linked with LEADTOOLS.
LDECOM4.C The 'C' source of LDECOM4.EXE
The file JPGVIEW4.ZIP contains:
LSHOW4.EXE An File to Screen decompression utility linked with LEADTOOLS.
LSHOW4.C The 'C' source of LSHOW4.EXE
The file JPGMEN4.ZIP contains:
TOOL4.EXE A program that calls the commonly used LEADTOOLS functions.
TOOL.C The 'C' source of DEMO.EXE.
The official evaluation of LEADTOOLS JPEG4.ZIP or LEADJPEG.ZIP contains.
The official evaluation of LEADTOOLS contains.
README.1st The file you are currently reading.
TOOL.C The source code of the tool4.EXE file.
TOOL4.EXE TOOL.C compiled and linked with LEADTOOLS "C" run-time library
for VGA/SVGA/TARGA16,24,32. LEADTOOLS also includes a TARGA+
library but this EXE was linked only with TARGA16,24,32.
LCOMP4.C The source code of LEADCOMP.EXE.
LCOMP4.EXE DOS file to file software compression utility compiled
and linked with LEADTOOLS "C" run-time library.
LDECOM4.C The source code of LEADCOMP.EXE.
LDECOM4.EXE DOS file to file software decompression utility compiled
and linked with LEADTOOLS "C" run-time library.
LSHOW4.C The source code of LEADCOMP.EXE.
LSHOW4.EXE DOS file to screen software decompression utility compiled
and linked with LEADTOOLS "C" run-time library. The Show
program has not been linked with all the libraries. LEADTOOLS
supports over 120 graphics cards including the Sierria RAM DAC
versions of the ET4000, Trident, and ATI XL. All Truevision
TARGA Graphics cards are supported, (8 bit 256 color, 16 bit
32,000 color, and 24 and 32 bit 16,777,000 color). The library
supports additional true color cards, and is capable of many
more features than is shown here.
Ship.cmp The original is a 24 bit TIFF with a size of 1.14 Mbytes,
and was compressed using this LEADTOOLS DEMO with the QS
setting. Note that you can decompress this image and
re-compress it. Also note that the compression Q factors are
user selectable.
Girl.cmp Is an image captured with a JVC RGB camera and a Truevision
TARGA+ board. The original is a 32 bit TGA file with a size of
983 kbytes. It was also compressed using this DEMO program
with the setting of QS.
This is not a demo software but a fully functional EXE programs.
This shareware version of LEADTOOLS does not contain the library files
that allow you to incorporate LEADTOOLS functions directly to your own
application, but contains EXE's designed for you to evaluate LEAD
Technologies product line.
This shareware version contains four (4) .EXE files which demonstrates some of the
functions that are included with LEADTOOLS Real mode DOS "note LEADTOOLS 32
runs 8 to 10 times faster than LEADTOOLS Real mode DOS". The sharware version
program is designed to give you a working understanding of LEAD Technologies'
image processing capabilities, and how the image processing functions may be
incorporated in your application.
Your license to use this software will expire after 3 weeks from
the date you receive it.
You are free to distribute this shareware copy of LEADTOOLS as long as all
files listed are all included (README.1ST, DEMO.C, DEMO4.EXE, LEADSHOW.C,
LEADSHOW.EXE, LEADCOMP.C, LEADCOMP.EXE, LEADECOM.C, and LEADECOM.EXE).
You may not distribute any of the files separately.
To optain the usage of the programs run each individual program without any
parameters and the program will display the "USAGE" menue.
You are required to have a minimum of VGA color card to view any image.
The programs also support TARGA, Hi color SVGA (Trident, Everex, Genoa,
Et4000, SpeedStar, ATI), & SVGA.
If you get a mussage "TARGA Initialization ERROR" and you have a VGA
don't worry this feture is to let developers detect for the presence of a
TARGA graphics card.
Q factor settings.
Typing in a factor of 1 to 255 will alter the Q factor and
therefore change the image file size and the image quality. A
factor of 1 will produce the best image quality and the largest
file size, while a factor of 255 will produce the smallest file
size and lowest image quality.
LEAD also has defined several Q factor settings at breaks
between the size vs. quality trade off. The selections are
given in abbreviated form in the EXE program. The abbreviations
represent the following:
PQ1 - Perfect Quality Option1
PQ2 - Perfect Quality Option2
QFS - Quality is far more important than size.
QMS - Quality is more important than size.
QS - Quality and size are equally important.
SQS - Size is more important than quality (sharp - images
with sharp contrasts in color or content, or with text).
SQT - Size is more important than quality (less tiling - for
images with a lot of the same color tones, such as
portraits).
MCQ - Maximum compression with quality still important.
MC - Maximum compression.
All .EXE programs are not designed as end user products. They all are a quick
collection of calls to LEADTOOLS functions. Menus were not included to avoid
confusion when evaluating the code as to the processing calls versus the
menuing code.
When compressing with JPEG (JFIF, or JTIF) notice that support has been given
for 4:4:4 (1:1:1), 4:2:2, and 4:1:1 color sub-samplings. (4:4:4 will produce
the best Quality compressed image, while 4:1:1 will produce the smallest file
size. 4:2:2 is a middle ground between the two.)
LEAD Technologies' offers several end user products as well as several
variations to the tool kit. LEAD's products are listed below.
LEADVIEW - Software only compression, decompression, file format
conversion, and communication. Operate from menuing system,
DOS command line.
Retail = $129.00
LEADVIEW for Windows
- Software only compression, decompression, file
format conversion, as well as the ability to flip,
rotate, and reverse images. Also includes a palette
editor.
Retail = $179.00
LEADVIEW32 (DOS & WINDOWS)
- The Fastest, Software only, solution on the market, for
compression, decompression, file format conversion, and
image processing (flip, rotate, resize, lighten, darken, etc).
Operate from menuing system, DOS command line or TSR from other
applications
Retail = $495.00
LEADVIEW 255 - PC/AT add-on board that accelerates the compression and
decompression process of both LEADVIEW and LEADVIEW for
Windows. Conducts compression and decompression in real-time.
Retail = $1,495.00 special summer price $995.00
LEADTOOLS - Real mode DOS Software compression - $995.00 No royalties.
- Hardware compression via LEADVIEW 255 - FREE with the purchase
of 2 LEADVIEW 255 boards.
- Conversion - $249.00 - All conversion and other image
processing functions are included. (Compression functions not
included).
LEADTOOLS 386
- Is software only compression for 386 or higher computers.
This version of LEADTOOLS will RUN at least 8 to 10 times as
fast as the current version REAL mode version, and requires a
386 compiler like (Intel 386/486 Code Builder Kit) or
(Watcom C). Retall = $ 995.00
LEADTOOLS DLL for Windows
- Software compression - $995.00 No royalties.
- 32bit fast Software compression - 995.00
- Hardware compression via LEADVIEW 255 - FREE
with purchase of 2 LEADVIEW 255 boards.
- Conversion - $249.00 - All conversion and
other image processing functions are included.
(Compression functions not included).
Both work with any product that uses DLL's.
LEADTOOLS Custom Control for Visual Basic.
- Software compression - $399.00 No royalties.
Please do not hesitate to contact LEAD's technical staff if you have any
questions while you are evaluating LEADTOOLS.
*********************************************************************************
LEADVIEW by LEAD Technologies, Inc.
Software Only Image Compression.
*********************************************************************************
LEADVIEW is an image compression, conversion, viewing and processing utility
for DOS. Compresses images to smaller than 200 times their original size while
maintaining unprecedented image quality. LEADVIEW supports the JPEG standard
as well as LEAD Technologies' proprietary compression format.
LEAD's compression file format produces a smaller file size and better image
quality than other compression techniques, including JPEG. LEAD's compression
file format can store a palette in the compressed file to allow decompression
to a 24-bit medium at 24-bit true color and to an 8-bit medium at 8-bit 256
color without sacrificing image quality. The compressed file stills contains
the original 24-bit 16 million colors. Storing the palette adds a table that
contains the best 256 colors. The palette is only used when the file is
decompressed to an 8-bit medium, and is ignored when decompressing to a
24-bit or 16-bit medium. There is no need to convert all images to 8-bit or
to save one 8-bit image and one 24-bit image. The result is one much smaller
file that can be viewed on a 24-bit graphics card at 24-bit true color as
well as on a VGA card at 8-bit 256 color.
Easily switch between JPEG and LEAD depending on the situation. If an image,
or series of images needs JPEG file format compatibility, use JPEG. If the
image will be used in a closed environment, that is compression and
decompression will be done on the same PC, LAN, or with a LEAD Technologies,
Inc. product, use LEAD. Note that an image that was originally compressed
with LEAD can be easily convert between any of the supported formats
LEADVIEW can be operated from an easy to use menu interface, as a TSR that
can be run under popular graphics programs, or from the DOS command line.
LEADVIEW not only compresses and decompressed images but also contains a
complete file format conversion utility. Images can be converted, scaled,
resized, and viewed. Supported file formats include;
TGA (8-, 16-, 24-, and 32 bit), TIFF (8- and 24-bit), BMP (4-, 8- and 24-bit),
GIF and PCX.
*********************************************************************************
LEADVIEW for Windows by LEAD Technologies, Inc.
Software Only Windows 3.x Compatible Image Compression.
*********************************************************************************
LEADVIEW For Windows is an image compression, conversion, viewing and processing
utility. Compress images to smaller than 200 times their original size while
maintaining unprecedented image quality. LEADVIEW for Windows supports the JPEG
standard as well as LEAD Technologies' proprietary compression format.
LEAD's compression file format produces a smaller file size and better image
quality than other compression techniques, including JPEG. LEAD's compression
file format can store a palette in the compressed file to allow decompression
to a 24-bit medium at 24-bit true color and to an 8-bit medium at 8-bit 256
color without sacrificing image quality. The compressed file stills contains
the original 24-bit 16 million colors. Storing the palette adds a table that
contains the best 256 colors. The palette is only used when the file is
decompressed to an 8-bit medium, and is ignored when decompressing to a
24-bit or 16-bit medium. There is no need to convert all images to 8-bit or
to save one 8-bit image and one 24-bit image. The result is one much smaller
file that can be viewed on a 24-bit graphics card at 24-bit true color as
well as on a VGA card at 8-bit 256 color.
Easily switch between JPEG and LEAD compression processes depending on the
situation. If an image, or series of images, needs JPEG file format
compatibility, use JPEG. If the image is to be used in a closed environment,
that is compression and decompression will be done on the same PC, LAN, or
with a LEAD Technologies product, use LEAD. Note that an image that was
originally compressed with LEAD can be decompressed and then re-compressed
with JPEG.
LEADVIEW for Windows also contains a complete file format conversion utility.
Images can be viewed converted, darkened, lightened, scaled, resized, flipped,
rotated, and reversed. With LEADVIEW for Windows you have an option to display
multiple images with an excellent average palette on 8-bit devices without
destroying background images, and a palette editor that lets you change
any of your image colors.
Supported file formats include: TGA (8-, 16-, 24-, and 32 bit),
TIFF (8- and 24-bit), BMP (4-, 8- and 24-bit), GIF , PCX ,JPG, JFIF,
JTIF and CMP.
*********************************************************************************
LEADVIEW 255
by LEAD Technologies, Inc.
Real Time Compression Hardware for LEADVIEW and LEADVIEW for Windows
*********************************************************************************
The LEADVIEW 255 is a hardware board that is designed to accelerate the
compression and decompression processes of LEADVIEW and LEADVIEW Windows.
The board is based around C-Cube Microsystems CL550B compression chip,
and is capable of producing both JPEG compliant files and LEAD's proprietary
CMP file formats.
When combined with LEADVIEW or LEADVIEW for Windows, the LEADVIEW 255 can
compress images smaller than 200 times their original size while maintaining
unprecedented image quality in real time. The LEADVIEW 255 supports the
JPEG compression standard as well as LEAD Technologies' proprietary
compression process. LEAD's algorithm delivers a smaller file size with a
better image quality than other compression techniques, including JPEG.
LEADVIEW 255 was designed to compress and decompress images in real time.
Bench mark tests on the LEADVIEW 255 show compression and decompression times
of under one second while processing a 1 Mbytes 32 bit TGA file on a 386 25
MHz IBM clone. LEAD Technologies recommends the 255 to anyone who requires
split second decompression times, or who frequently needs to compress and
decompress multiple images.
*********************************************************************************
LEADTOOLS
by LEAD Technologies, Inc.
Put Image Compression, Conversion, and Processing Into Your Application
*********************************************************************************
LEADTOOLS is a "C" run-time library enabling developers to incorporate image
compression, conversion, and processing into their applications.
LEADTOOLS allows images to be compressed to smaller than 200 times their
original size while maintaining unprecedented image quality. Ideal for
applications such as image databases, medical, mapping, real estate,
graphics, and much more. LEADTOOLS is essential in any image or graphics
application. There are three versions of LEADTOOLS:
LEADTOOLS with software compression,
LEADTOOLS with hardware compression, and
LEADTOOLS - conversion only.
The need for compression stems from the large file sizes that are generated
by color and grey scale graphic images. Image file sizes can range from
100 Kbytes to over 200 Mbytes. The size of the files can be very prohibitive
to applications because of storage requirements, I/O time of moving the image
files through the system, or transmission time over networks or phone lines.
Compression reduces the file size of an image and may make the use of images
feasible, in any applications. Several popular PC image
file formats such as TGA, TIFF, BMP, PCX, and GIF currently use compression
in their file formats to reduce the size the image creates. However, even
with the compression in the image file format, the file sizes of these
images are still extremely large. LEADTOOLS allows you to add additional
compression to all supported image file formats. The amount of compression
is controllable, allowing the compressed image quality to match the needs
of your application. LEAD Technologies' extended compression ratios and the
powerful LEAD CMP compressed file format enable "C" developers to produce
imaging applications with LEADTOOLS to significantly improve available image
processing and transmission times. LEADTOOLS supports both the JPEG standard
compression and LEAD Technologies' proprietary compression.
LEADTOOLS Features
- Choice of real time rates with hardware compression, or 8-10 second
compression with software only.
- Compression and decompression of graphic images while retaining very
high image resolution quality.
- Direct decompression from a compressed file to video memory.
- Support for both JPEG compliant formats, JFIF and JTIF, as well as
LEAD's CMP extended compression file format. LEAD's CMP compression
file format delivers a much smaller file size and better image
quality than other compression techniques including JPEG.
- Ability to control the quality of the compressed image with a
selection of compression factors ranging from 2 to 255.
- Ability to display graphic images to a variety of different screen
types: TARGA, VGA, and Super VGA.
- Ability to convert and compress/decompress images to and from several
file formats:
TGA 8 bit grey scale, 8 bit color mapped, 16, 24, and 32 bit
color.
PCX 8 bit grey scale and 8 bit color mapped.
GIF 8 bit grey scale and 8 bit color mapped.
TIFF 8 bit grey scale, 8 bit color mapped, and 24 bit color
BMP Presentation Manager and Windows 4, 8 bit color mapped, and
24 bit color.
JFF (JFIF) JPEG File Interchange Format, (extended as JPG).
JTF (JTIF) JPEG TIF.
CMP (LEAD) LEAD Technologies, Inc. proprietary compression file
format.
- Ability to (Optimize VGA Palette) find the best 256 colors from 16,
24, and 32 bit image file formats.
- Ability to flip, reverse, rotate and resize images.
- Ability to use all of the system's resources to its maximum power
including support of extended memory, expanded memory, and swapping
to disk capability.
- Tools for viewing all supported file formats, including resizing an
image "on the fly" for optimal displaying and the ability to display
the image to specified locations on the screen.
- Support for a bit map handle allowing you to use all of LEADTOOLS'
functions in mediums that LEAD Technologies, Inc. does not currently
support. A "BITMAPHANDLE" is a structure containing image information
and data, which is made up of fields that describe an image completely,
including Format, Width, Height, BitsPerPixel, BytesPerLine, where to
find the pixel data, flags about the image, and many more. A
BITMAPHANDLE is used for functions involving images. For instance,
when you load an image, you load it into the BITMAPHANDLE; then you
may view, convert, flip, etc. the image using the BITMAPHANDLE. As
a developer you may use any of the fields in the BITMAPHANDLE.
Example of the usage of LEADTOOLS in mediums that LEAD Technologies
does not currently support.
1 - For the compression/decompression of image file formats not
currently supported by LEAD, you can write your own routines
to read the unrecognized file format into the bit map handle and
then compress the bit map handle. You can also decompress the
compressed file to a bit map handle and write your own routines
to save the file in the unsupported file format.
2 - For graphics cards and printers not currently supported by LEAD,
you can decompress to a bit map handle and resize, flip, reverse,
optimize, and write your own routines to view or print directly
from the bit map handle.
LEADTOOLS - Easy to use
LEADTOOLS is designed to allow you to concentrate on your applications and
end user needs. With this goal in mind, LEAD Technologies has built in the
most common hardware and graphic file format support.
All you have to do is call the appropriate LEADTOOLS function. When your
application needs compression, call LEADTOOLS' compression functions, pass
the appropriate parameters, and allow LEADTOOLS to perform the complex task
of image compression.
Additionally, when the application requires an image to be viewed, you may
call one of LEADTOOLS viewing functions. LEADTOOLS takes care of the time
consuming programming support for different file formats and different
hardware configurations.
integrating LEADTOOLS' Functions into your applications is as follows:
1 - Use #include preprocessor directive for the header files
required.
2 - Call the desired functions from within your program.
3 - Compile the program.
4 - Link with the appropriate library.
The Compression Concept
The concept of compression is to reduce file sizes by either finding
redundancies and storing as few of them as possible, or with image and
audio files eliminating some information to produce more redundancies, then
combining them to produce even a smaller file size.
There are basically three ways to compress an image :
1) Lossless compression, which deals with redundancies of the image
data.
2) Lossey compression, which discards the color shadings that the
human eye cannot detect, and then compresses the image with a
lossless compression. This process allows for more compression
since it provides more redundancies. There is technically a loss of
data because color shadings have been eliminated and hence the
name for the technique.
3) The lossey compression can also eliminate color shadings that are
visible to the human eye. This too is loss of data. The amount of
loss is controllable by setting parameters of the range of colors
that will be treated as the same. The larger the range, the more
loss will occur, and the smaller the resulting compressed image
file size.
LEADTOOLS' Supported Compression
LEADTOOLS supports LEAD CMP, JPEG, LZW and RLE compression methods.
LEAD LEADTOOLS supports LEAD Technologies' proprietary CMP file which
delivers a smaller file size combined with better image quality than
other compression techniques, including JPEG.
LEAD's compression file format can also store a palette in the
compressed file to allow decompression to a 24 bit medium at 24 bit
color and to an 8 bit medium at 8 bit 256 color without sacrificing
image quality. The file still contains the original 24 bit 16 million
colors.
Storing the palette adds a table that contains the best 256 colors.
The palette is only used when the file is decompressed to an 8 bit
medium and is ignored when decompressing to a 32, 24, or 16 bit
medium. There is no need to convert all images to 8 bits or to save
one 8 bit image and one 24 bit image. The result is one much smaller
file size that can be viewed on a 24 bit graphics card at 24 bit true
color, as well as, on an 8 bit VGA card at 256 colors.
JPEG JPEG stands for the Joint Photographers Experts Group and grew out of
two standardized groups, the CCITT and the ISO. The basic idea behind
JPEG is to provide a unified standard under which hardware and
software developers can operate. Images compressed with JPEG can be
exchanged between a wide variety of platforms and applications. The
JPEG specification consists of two parts:
lossless encoding and lossey encoding. The lossless compression uses
the predictive/adaptive technique and Huffman coding. The lossey
compression operates in three steps:
1. Discreet Cosine Transformation
2. Coefficient Quantization
3. Lossless Compression
LEADTOOLS supports two forms of JPEG: JPEG Interchange File Format (JFIF) or
(JPG) and JPEG TIFF (JTIF).
Supported Graphics Cards
TARGA M8, 16, 24, 32, TARGA+, standard VGA/MCGA at 320 X 200, Super VGAs
(including:Paradise, Tseng Labs 3000/4000, ATI Wonder, Trident 8800CS,
Video Seven, all up to 1024 X 1024), and VESA compliant standard up to
640 X 480.
Supported Compilers
Microsoft C 6.0, 7.0 Medium and Large memory modules
Borland C, C++ Medium and Large memory modules
Call for updated list of compilers. Including DOS Extenders.
Compatible with LEAD Technologies' real time compression hardware LEADVIEW 255
LEADTOOLS' commonly used functions:
L_AllocateBitmap Allocate storage to hold an image in a bitmap handle
L_ChangeBitmapIntensity Change the intensity of an image currently in a bitmap handle
L_ClearBitmap Clear storage located in bitmap handle
L-ClearVGAScreen Clear the VGA screen
L_CompressALL Compress all supported file formats
L_CompressBitmap Compress an image contained in a bitmap handle
L_CompressBMP Compress a BMP image file format to LEAD, JFIF, or JTIF
L_CompressGIF Compress a GIF image file format to LEAD, JFIF, or JTIF
L_CompressPCX Compress a PCX image file format to LEAD, JFIF, or JTIF
L_CompressTarga Compress the current image in the TARGA or TARGA+ video memory
L_CompressTGA Compress a TGA image file format to LEAD, JFIF, or JTIF
L_CompressTIF Compress a TIFF image file format to LEAD, JFIF, or JTIF
L_CopyBitmapData Copy image data from one bitmap handle to another
L_CopyBitmapHandle Copy one bitmap handle to another
L_DecompressALL Decompress LEAD, JFIF, or JTIF to any of the supported file formats
L_DecompressBitmap Decompress LEAD, JTIF, or JFIF to bitmap handle
L_DecompressBMP Decompress LEAD, JTIF, or JFIF to BMP image file format
L_DecompressGIF Decompress LEAD, JTIF, or JFIF to GIF image file format
L_DecompressPCX Decompress LEAD, JTIF, or JFIF to PCX image file format
L_DecompressTARGAScreen Decompress LEAD, JFIF, or JTIF to TARGA or TARGA+
L_DecompressTGA Decompress LEAD, JTIF, or JFIF to TGA image file format
L_DecompressTIF Decompress LEAD, JTIF, or JFIF to TIFF image file format
L_DecompressVGAScreen Decompress LEAD, JTIF, or JFIF to VGA or Super VGA
L_FileConvert Convert any supported image file to another supported image file format
L_FileInfo Return information on any supported image file format
L_FlipBitmap Flip an image (top to bottom) located in a bitmap handle
L_FreeBitmap Free the storage allocated for an image contained in a bitmap handle
L_GetBitmapRow Retrieve a row from an image in a bitmap handle
L_GetScreenBitmap Retrieve an image from the VGA or Super VGA screen
L_GetTargaWindow Save TARGA or TARGA+ pixel data from a specified location
L_GetVideoInfo Calculate the best VGA width and height
L_GetVideoMode Get current VGA video display mode and page
L_InitBitmap Initialize the fields in a bitmap handle
L_InitVideoScreen Initialize the VGA video screen and switches to that mode
L_LoadBMPScreen Load a BMP image file into VGA, Super VGA, and/or bitmap handle
L_LoadBMPTarga Load a BMP image file into TARGA, TARGA+, and/or bitmap handle
L_LoadGIFScreen Load a GIF image file into VGA, Super VGA, and/or bitmap handle
L_LoadGIFTarga Load a GIF image file into TARGA, TARGA+, and/or bitmap handle
L_LoadPCXScreen Load a PCX image file into VGA, Super VGA, and/or bitmap handle
L_LoadPCXTarga Load a PCX image file into TARGA, TARGA+, and/or bitmap handle
L_LoadTGAScreen Load a TGA image file into VGA, or Super VGA, and/or bitmap handle
L_LoadTGATarga Load a TGA image file into TARGA, TARGA+, and/or bitmap handle
L_LoadTIFScreen Load a TIFF image file into VGA, Super VGA, and/or bitmap handle
L_LoadTIFTarga Load a TIFF image file into TARGA, TARGA+, and/or bitmap handle
L_OptimizeBitmap Optimize a (16, 24, or 32bit) image into 256 colors
L_PutBitmapRow Store a row of an image data into a bitmap handle
L_ResizeBitmap Resize an image in a bitmap handle
L_RestoreWindow Restore a buffer to current text screen
L_ReverseBitmap Reverse an image (left to right) located in a bitmap handle
L_RotateBitmap Rotate an image in a bitmap handle
L_SaveBMPBitmap Save a bitmap to a BMP image file format
L_SaveGIFBitmap Save a bitmap to a GIF image file format
L_SavePCXBitmap Save a bitmap to a PCX image file format
L_SaveTGABitmap Save a bitmap to a TGA image file format
L_SaveTIFBitmap Save a bitmap to a TIF image file format
L_SaveWindow Save the current VGA text screen and cursor location
L_SetBitmapPos Set a new X and Y positions in a bitmap handle
L_SetCheckStatus Status for checking the Escape key
L_SetTARGAMode Set the TARGA+ graphics resolution
L_SetVGASize Set the desired size for the VGA screen.
L_SetVideoMemory Set the amount of VGA video RAM install
L_SetVideoMode Set the VGA video mode and page
L_ShowBMPScreen Display a BMP image file to VGA or SuperVGA
L_ShowBMPTarga Display a BMP image file to TARGA or TARGA+
L_ShowGIFScreen Display a GIF image file to VGA or SuperVGA
L_ShowGIFTarga Display a GIF image file to TARGA or TARGA+
L_ShowPCXScreen Display a PCX image file to VGA or SuperVGA
L_ShowPCXTarga Display a PCX image file to TARGA or TARGA+
L_ShowTGAScreen Display a TGA image file to VGA or SuperVGA
L_ShowTGATarga Display a TGA image file to TARGA or TARGA+
L_ShowTIFScreen Display a TIFF image file to VGA or SuperVGA
L_ShowTIFTarga Display a TIFF image file to TARGA or TARGA+
L_SizeBitmap Resize an image in a bitmap to a new width and height
L_SleepKey Delay until a key is pressed or time out occurs
L_TARGAEND Perform clean up for TARGA or TARGA+ graphics environment
L_TARGAInit Initialize TARGA or TARGA+ graphics Environment
L_ViewBitmapScreen Display an image in a bitmap handle to VGA or Super VGA screen
L_ViewBitmapTarga Display an image in a bitmap handle to TARGA or TARGA+
*********************************************************************************
LEADTOOLS for WINDOWS DLL
by LEAD Technologies, Inc.
Put Image Compression, Conversion, and Processing Into Your Windows
Application.
*********************************************************************************
LEADTOOLS for Windows DLL is a Dynamic Link Library (DLL) enabling developers
to incorporate image compression, conversion, and processing into their
Windows applications. LEADTOOLS for Windows DLL allows images to be compressed
to smaller than 200 times their original size while maintaining unprecedented
image quality. Ideal for applications such as image databases, medical,
mapping, real estate, graphics, and much more. LEADTOOLS for Windows DLL is
essential in any Windows image or graphics application.
There are three versions of LEADTOOLS for Windows DLL:
LEADTOOLS for Windows DLL with software compression.
LEADTOOLS for Windows DLL with hardware compression.
LEADTOOLS for Windows DLL without compression.
The need for compression stems from the large file sizes that are generated
by color and grey scale graphic images. Image file sizes can range from
100 Kbytes to over 200 Mbytes. The size of the files can be very prohibitive
to applications because of storage requirements, I/O time of moving the image
files through the system, or transmission time over networks or phone lines.
Compression reduces the file size of an image and may make the use of images
feasible, and even practical, in many applications. Several popular PC image
file formats such as TGA, TIFF, BMP, PCX, and GIF currently use compression
in their file formats to reduce the size the image creates. However, even
with the compression in the image file format, the file sizes of these images
are still extremely large. LEADTOOLS for Windows DLL allows you to add
additional compression to all supported image file formats. The amount of
compression is controllable, allowing the compressed image quality to match
the needs of your application. LEAD Technologies' extended compression ratios
and the powerful LEAD CMP compressed file format enable Windows developers to
produce imaging applications with LEADTOOLS for Windows DLL to significantly
improve available image processing and transmission times. LEADTOOLS for
Windows DLL supports both the JPEG standard compression and LEAD Technologies'
proprietary compression.
LEADTOOLS for Windows DLL Features
- Choice of real time rates with hardware compression, or 8-10 second
compression with software only.
- Compression and decompression of graphic images while retaining very
high image quality.
- Direct decompression from a compressed file to registered Windows
class.
- Support for both JPEG compliant formats, JFIF and JTIF, as well as
LEAD's CMP extended compression file format. LEAD's CMP compression
file format delivers a much smaller file size and better image quality
than other compression techniques including JPEG.
- Ability to control the quality of the compressed image with a selection
of compression factors ranging from 2 to 255.
- Ability to convert and compress/decompress images to and from several
file formats:
TGA 8 bit grey scale, 8 bit color mapped, 16, 24, and 32 bit color.
PCX 8 bit grey scale and 8 bit color mapped.
GIF 8 bit grey scale and 8 bit color mapped.
TIFF 8 bit grey scale, 8 bit color mapped, and 24 bit color
BMP Presentation Manager and Windows 4, 8 bit color mapped, and
24 bit color.
JFF (JFIF) JPEG File Interchange Format, (extended as JPG).
JTF (JTIF) JPEG TIF.
CMP (LEAD) LEAD Technologies, Inc. proprietary compression
file format.
- Ability to (Optimize VGA Palette) find the best 256 colors from 16,
24, and 32 bit image file formats.
- An option to display multiple images with an excellent average palette
on 8-bit devices without destroying background images.
- Ability to flip, reverse, rotate and resize images.
- A registered Windows class freeing developers from the details of
displaying an image under Windows
- Support for a bit map handle allowing you to use all of LEADTOOLS'
Windows DLL functions in mediums that LEAD Technologies, Inc. does
not currently support. A "BITMAPHANDLE" is a structure containing
image information and data, which is made up of fields that describe
an image completely, including Format, Width, Height, BitsPerPixel,
BytesPerLine, where to find the pixel data, flags about the image,
and many more. A BITMAPHANDLE is used for functions involving
images. For instance, when you load an image, you load it into the
BITMAPHANDLE; then you may view, convert, flip, etc. the image using
the BITMAPHANDLE. As a developer you may use any of the fields in the
BITMAPHANDLE.
Example of the usage of LEADTOOLS for Windows DLL in mediums that LEAD
Technologies does not currently support.
For the compression/decompression of image file formats not currently
supported by LEAD, you can write your own routines to read the unrecognized
file format into the bit map handle and then compress the bit map handle.
You can also decompress the compressed file to a bit map handle and write
your own routines to save the file in the unsupported file format.
LEADTOOLS for Windows DLL-Easy to use.
LEADTOOLS for Windows DLL is designed to allow you to concentrate on your
applications and end user needs. With this goal in mind, LEAD Technologies
has built in the most common hardware and graphic file format support. All
you have to do is call the appropriate LEADTOOLS for Windows DLL function.
When your application needs compression, call LEADTOOLS' Windows DLL
compression functions, and allow LEADTOOLS to perform the complex task of
image compression.
Additionally, when the application requires an image to be viewed, you may
call one of LEADTOOLS Windows DLL viewing functions. LEADTOOLS for Windows
DLL takes care of the time consuming programming support for different file
formats and different hardware configurations.
Integrating LEADTOOLS' Windows DLL Functions into your applications is as
follows:
1 - Use #include preprocessor directive for the header files required.
2 - Call the desired functions from within your program.
3 - Compile the program.
4 - Link with the appropriate library.
The Compression Concept.
The concept of compression is to reduce file sizes by either finding
redundancies and storing as few of them as possible, or with image and
audio files eliminating some information to produce more redundancies, then
combining them to produce even a smaller file size.
There are basically three ways to compress an image :
1) Lossless compression, which deals with redundancies of the image data.
2) Lossey compression, which discards the color shadings that the human eye cannot detect, and
then compresses the image with a lossless compression. This process allows for more compression
since it provides more redundancies. There is technically a loss of data because color shadings
have been eliminated and hence the name for the technique.
3) The lossey compression can also eliminate color shadings that are visible
to the human eye. This too is loss of data. The amount of loss is
controllable by setting parameters of the range of colors that will be
treated as the same. The larger the range, the more loss will occur, and
the smaller the resulting compressed image file size.
LEADTOOLS' Windows DLL Supported Compression
LEADTOOLS for Windows DLL supports LEAD CMP, JPEG, LZW and RLE compression
methods.
LEAD LEADTOOLS for Windows DLL supports LEAD Technologies' proprietary
CMP file which delivers a smaller file size combined with better
image quality than other compression techniques, including JPEG.
LEAD's compression file format can also store a palette in the
compressed file to allow decompression to a 24 bit medium at 24 bit
color and to an 8 bit medium at 8 bit 256 color without sacrificing
image quality. The file still contains the original 24 bit 16 million
colors.
Storing the palette adds a table that contains the best 256 colors.
The palette is only used when the file is decompressed to an 8 bit
medium and is ignored when decompressing to a 32, 24, or 16 bit
medium. There is no need to convert all images to 8 bits or to save
one 8 bit image and one 24 bit image. The result is one much smaller
file size that can be viewed on a 24 bit graphics card at 24
bit true color, as well as, on an 8 bit VGA card at 256 colors.
JPEG JPEG stands for the Joint Photographers Experts Group and grew out of
two standardized groups, the CCITT and the ISO. The basic idea behind
JPEG is to provide a unified standard under which hardware and
software developers can operate. Images compressed with JPEG can
be exchanged between a wide variety of platforms and applications.
The JPEG specification consists of two parts:
lossless encoding and lossey encoding. The lossless compression uses
the predictive/adaptive technique and Huffman coding. The lossey
compression operates in three steps:
1. Discreet Cosine Transformation
2. Coefficient Quantization
3. Lossless Compression
LEADTOOLS supports two forms of JPEG: JPEG Interchange File Format (JFIF) or
(JPG) and JPEG TIFF (JTIF).
LEADTOOLS' Windows DLL commonly used functions:
L_AllocateBitmap Allocate storage to hold an image in a bitmap handle
L_ChangeBitmapIntensity Change the intensity of an image currently in a bitmap handle
L_ClearBitmap Clear storage located in bitmap handle
L_CompressALL Compress all supported file formats
L_CompressBitmap Compress an image contained in a bitmap handle
L_CompressBMP Compress a BMP image file to LEAD, JFF, JTF
L_CompressGIF Compress a GIF image file format to LEAD, JFIF, or JTIF
L_CompressPCX Compress a PCX image file format to LEAD, JFIF, or JTIF
L_CompressTarga Compress the current image in the TARGA or TARGA+ video memory
L_CompressTGA Compress a TGA image file format to LEAD, JFIF, or JTIF
L_CompressTIF Compress a TIFF image file format to LEAD, JFIF, or JTIF
L_CopyBitmapData Copy image data from one bitmap handle to another
L_CopyBitmapHandle Copy one bitmap handle to another
L_DecompressALL Decompress LEAD, JFIF, or JTIF to any of the supported file formats
L_DecompressBitmap Decompress LEAD, JTIF, or JFIF to bitmap handle
L_DecompressBMP Decompress LEAD, JTIF, or JFIF to BMP image file format
L_DecompressGIF Decompress LEAD, JTIF, or JFIF to GIF image file format
L_DecompressPCX Decompress LEAD, JTIF, or JFIF to PCX image file format
L_DecompressTGA Decompress LEAD, JTIF, or JFIF to TGA image file format
L_DecompressTIF Decompress LEAD, JTIF, or JFIF to TIFF image file format
L_FileConvert Convert any supported image file to another supported image file format
L_FileInfo Return information on any supported image file format
L_FlipBitmap Flip an image (top to bottom) located in a bitmap handle
L_FreeBitmap Free the storage allocated for an image contained in a bitmap handle
L_GetBitmapRow Retrieve a row from an image in a bitmap handle
L_GetWindowBitmap Retrieves an image from the Disktop
L_InitBitmap Initialize the fields in a bitmap handle
L_LoadBMP Load a BMP image file into bitmap handle
L_LoadGIF Load a GIF image file into a bitmap handle
L_LoadPCX Load a PCX image file into a bitmap handle
L_LoadTGA Load a TGA image file into a bitmap handle
L_LoadTIF Load a TIFF image file into a bitmap handle
L_OptimizeBitmap Optimize a (16, 24, or 32bit) image into 256 colors
L_PutBitmapRow Store a row of an image data into a bitmap handle
L_RegeisterLEAD Register LEAD Window class
L_ResizeBitmap Resize an image in a bitmap handle
L_ReverseBitmap Reverse an image (left to right) located in a bitmap handle
L_RotateBitmap Rotate an image in a bitmap handle
L_SaveBMPBitmap Save a bitmap to a BMP image file format
L_SaveGIFBitmap Save a bitmap to a GIF image file format
L_SavePCXBitmap Save a bitmap to a PCX image file format
L_SaveTGABitmap Save a bitmap to a TGA image file format
L_SaveTIFBitmap Save a bitmap to a TIF image file format
L_SetAveragePalette Set or calculate average palette.
L_SetBitmapPos Set a new X and Y positions in a bitmap handle
L_SizeBitmap Resize an image in a bitmap to a new width and height
L_Use Avarage Palette Use average palette when display multiple images
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LEAD Technologies, Inc. Price List:
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LEADTOOLS $995.00
LEADTOOLS -no compression $249.00
LEADTOOLS hardware compression FREE with the purchase of 2 LEADVIEW 255 boards
LEADTOOLS for Windows DLL $995.00
LEADTOOLS for Windows DLL -no compression $249.00
LEADTOOLS for Windows DLL hardware compression FREE with the purchase of 2 LEADVIEW 255 boards
LEADVIEW $129.00
LEADVIEW Windows $179.00
LEADVIEW 255 $1,495.00
All LEAD Technologies products are sold with a 30 day money back guarantee.
LEADTOOLS DOS AND LEADTOOLS Windows DLL are sold without royalties.
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To contact LEAD call or write:
LEAD Technologies, Inc.
8701 Mallard Creek Road
Charlotte, NC 28262
1-800-637-4699
in NC 704-549-5532
Fax 704-548-8161
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