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Victor Image Processing Library -- Function Summary
The functions in Victor Library v 4.11 are arranged in the following catagories.
File Operations
BMP, GIF, JPEG, PCX, TGA, TIFF, and raw data file formats are supported for loading and saving. loadbif load 8-bit binary image data file
loadbmp load 1-, 4-, 8-, or 24-bit BMP file
(uncompressed or RLE)
loadgif load 1- through 8-bit GIF file
loadgifpalette load GIF palette
loadjpg load 8- or 24-bit JPEG file
loadjpgfrombuffer load 8- or 24-bit JPEG file from memory
loadpcx load 1-, 4-, 8-, or 24-bit PCX file
loadpcxpalette load PCX color palette
loadtga load Targa 8-, 16-, 24-, 32-bit file
(uncompressed or compressed)
loadtgapalette load TGA color palette
loadtif load 1-, 4-, 6-, 8-, or 24-bit TIFF
(uncompressed, PackBits, G3, G4 or LZW)
loadtifpage load an image from a multipage TIFF file
loadtifpalette load TIFF color palette
savebif save 8-bit binary image data file
savebmp save image as 1-, 8-, or 24-bit BMP
(uncompressed or compressed)
saveeps save image as EPS file (grayscale or color)
savegif save image as 1- or 8-bit GIF file
savegifex save image as 1-, 4-, or 8-bit GIF file with
interlace and transparent color options
savejpg save image as 8-bit grayscale or 24-bit color
JPEG compressed file (quality range 1 to 100)
savepcx save image as 1- or 8-bit PCX
savetga save image as 24-bit RGB Targa
(uncompressed or compressed)
savetif save image as 1-, 8-, or 24-bit TIFF
(uncompressed, PackBits, G3, G4 or LZW)
savetifpage save image in a multipage TIFF file
bmpinfo obtain information about BMP file
gifinfo obtain information about GIF file
jpeginfo obtain information about JPEG file
jpeginfofrombuff obtain information about JPEG file from memory
pcxinfo obtain information about PCX file
tgainfo obtain information about TGA file
tiffinfo obtain information about TIFF file
tiffgetpageinfo obtain total pages info from multipage TIFF file
tiffinfopage obtain image info from a specific page in TIFF file
unlockLZW unlock LZW compression/decompression functionality
(requires valid LZW license from Unisys)
Image Processing Functions
Image processing functions alter the brightness level values of an
image. These functions can operate on multiple images, a single image,
or any rectangular area within an image.
blur smoothing filter
blurthresh smoothing filter with threshold
brightenmidrange raise brightness of mid levels
changebright increase or decrease brightness
divide divide by factor
exchangelevel change range to new value
expandcontrast increase contrast
gammabrighten adjust gamma brightness
histobrighten histogram brightening
histoequalize histogram equalization
kodalith create high contrast image
limitlevel set maximum brightness level
matrixconv matrix convolution
multiply multiply by factor
negative negative image
outline edge detection filter
pixellize pixellation
removenoise median filter
sharpen sharpening filter
sharpengentle gently sharpen
threshold set minimum brightness level
usetable assign brightness based on table
addimage add two images
andimage AND two images
cover overlay two images
orimage OR two images
subimage subtract two images
wtaverage weighted average of two images
xorimage XOR two images
zeroimage set all pixel values to a value
Image Manipulation
These functions alter an image area's shape, dimensions, position, or
orientation.
copyimage copy or crop image
flipimage flip image top to bottom
mirrorimage reverse image left to right
resize resize image
rotate rotate image any angle
rotate90 rotate image 90 degrees
setimagearea set region of interest in image, all subsequent operations
affect only the region of interest
Image Analysis
calcavglevel calculate average brightness
calchisto calculate histogram
getpixelcolor read a pixel value
pixelcount count pixels in brightness range
setpixelcolor set pixel value
Color Reduction and Image Conversion
These functions operate on images and color palettes and convert between
image formats.
colordither create dithered color image, 16- or 256-color palette
colorscatter create scatter color image, 16- or 256-color palette
colortogray color image to grayscale
convert1to8bit 1-bit image to 8-bit image
convert8to1bit 8-bit image to 1-bit image with
dither, scatter, or threshold options
convertrgbpal 24-bit RGB image to 8-bit with optimum palette
convertrgbpalex 24-bit RGB image to 8-bit with optimum palette with
diffusion scatter and color matching options
convertpalrgb 8-bit image to 24-bit RGB
dibtobitmap DIB to a device specific bitmap
imagetodib extract an image area and create a new DIB
matchcolorimage match image to a specified palette
matchcolorimageex match image to a specified palette with
diffusion scatter and color matching options
reduceimagecolors decrease the number of colors used in an image
Color Palette Functions
These functions operate on color palettes and convert between palette
formats.
copyimagepal copy image palette data
defaultpalette assign Windows palette to image
rainbowpalette assign rainbow palette to image
hsv2rgb convert hue, saturation, value table to red,
green, blue palette
rgb2hsv convert red, green, blue palette to hue,
saturation, value table
victowinpal convert image palette to Windows logical palette
wintovicpal convert Windows logical palette to image
palette
Memory Management
Victor for Dos operates on images stored in expanded, extended,
conventional, or virtual memory. Victor for Windws operates on images
stored as DIBs in global memory. These functions allocate or free memory
for image storage.
allocDIB allocate space for a clipboard-compatible DIB
allocimage allocate space for an image
freeimage free an allocated image
Video Digitizer Support
Optional support is available for several framegrabbers.
- Quanta WinVisionPro, color
- Jovian Logic SuperVia, color
- High Res Technologies HRT512-8, grayscale
- IDEC Supervision-16, grayscale
These modules have the functionality to give you complete control over the video framegrabbers.
- capture an image area
- display continuous video in a window
- capture and average multiple frames
- adjust brightness, contrast, hue, saturation (depends on framegrabber capabilities)
- transfer image from computer memory to framegrabber video memory for display on an external monitor (if framegrabber supports video output)
Printer Functions
The printer functions print an image area. Victor for Windows supports
all Windows printers, Victor for Dos supports LaserJet (up to 1200 dpi),
Epson 24-pin, Canon, and DeskJet Color printers. Print methods
supported are bilevel, halftone, scatter, color, and Windows default
method.
printimage print image
printimagenoeject print image without ejecting page, allowing multiple
images and text to be printed
Scanner Control
ScanJet functions set scanner parameters, return parameter values, and
capture bilevel, grayscale, and RGB color images from HP ScanJet
scanners. Automatic document feeder is also supported in Victor for
Windows
SJdetect detect scanner driver and issue handle
SJdetectdriver detect scanner driver
SJerrno get last error code
SJgetcurrent get current value of a parameter
SJgetdatawidth get output data width in bits
SJgetdatatype get output data type
SJgetmax get maximum value of a parameter
SJgetmin get minimum value of a parameter
SJgetscanbytes get width of scan window in bytes
SJgetscanrows get scanlines in scan window
SJmodel identify scanner model
SJsetcontrast set contrast of scanned image
SJsetintensity set intensity of scanned image
SJsetdatatype set scanner data type
SJsetdatawidth set data width in bytes
SJscanimage scan into an image buffer
SJwinsize set the scanner window
SJxyres set scanner resolution
Display Functions
These display functions display the image or histogram.
drawhisto display histogram
viewimage display image
viewimageex display image with automatic color reduction
at a specific location in a window
Victor supports all Windows and VESA display adapters.
Copyright © 1995 Catenary Systems Inc. All rights reserved. Victor Image Processing Library is a trademark of Catenary Systems.