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Using TIFFDUMP
You use the TIFFDUMP utility to display information about TIFF (Tagged
Image File Format) images. The TIFFDUMP utility is automatically
copied to your PhotoFinish directory and added to your PhotoFinish
program group during setup. The name of the icon is Tiff File Info.
The TIFF file format has gone through several revisions and the different
versions are often incompatible. PhotoFinish supports TIFF version 5.0
and can often load version 3 and 4 TIFF files.
PhotoFinish can read uncompressed TIFF files and TIFF files created
with various compression schemes such as PackBit and CCITT for black
and white pictures, LZW (Lempel, Ziv, Welch) for gray scale and 256
color pictures, and 24 bit for 24 bit color pictures.
You should keep in mind the following conventions used in the command
line format for DOS utilities:
Include file extensions when filenames are called for.
Include backslashes in paths (e.g., C:\PHOTO\EXAMPLE.PCX).
Separate multiple options with a space.
Square brackets "[ ]" enclose optional parameters that you replace.
Braces "{ }" enclose required parameters that must be replaced.
To view the header information of a TIFF file in Windows:
1 Activate the Windows Program Manager.
2 Double-click the Tiff File Info program icon in your PhotoFinish group.
3 Type the filename you want information about.
If the picture you want to know about is in a different directory, type its
full path and name.
4 Press Enter.
TIFFDUMP displays an executive summary about the file. See the
following chart for the information TIFFDUMP includes in the summary.
5 TIFFDUMP asks you to enter a command if you want more
information.
Type "Q" to quit the utility if you do not want more information.
For a list and explanation of each command see TIFFDUMP
Command Options following this discussion.
You can also type "?" and TIFFDUMP will display a list explaining the
commands.
TIFFDUMP Executive Summary
When you use the TIFFDUMP utility, an Executive Summary appears on
your screen with the following information:
Byte Order: the type of files TIFFDUMP supports. TIFFDUMP cannot
read Motorola files. However, PhotoFinish can load files generated using
Motorola Byte Order. (Motorola byte order files generally are created on
a Macintosh. Intel byte order files generally are created on a PC.)
Image Number: which image is being reported on if you have a TIFF file
that contains more than one image.
Image Size: the dimensions of the picture in pixels.
Number of Colors: the number of colors in the picture's palette.
Compression Scheme: how the image was stored in the TIFF file.
PhotoFinish supports Uncompressed (appears as None), PackBit,
CCITT, 24 bit, and LZW compression schemes.
Bits Per Sample: the space needed to create one pixel of color on your
screen.
Approximate Size: the estimated size of the uncompressed TIFF file.
This number gives you an idea of how much RAM is needed to load the
picture.
X resolution/Y resolution: the number of dots-per-unit that PhotoFinish
uses to create the picture. The X and Y resolutions depend on the
settings you used when you created the picture. For example, if you
have a 300 dpi printer and you chose for your picture to be based on
printer, the X and Y resolutions will both read 300 in the TIFF Executive
Summary.
TIFFDUMP Command Options
You can view other information after the executive summary. Type the
letter of the command you want or type "?" to see a list of the
commands. Below is a list of the available options and the information
they provide.
C: Color Curve. The Gamma Corrected RGB values for the palette of the
picture you are checking. Black and white pictures have no Color Curve.
D: Dump Tags. Information about each TIFF tag within a picture file.
This information may be needed if you call Technical Support.
G: Gray Curve. Color values for all of the grays in the palette of the
picture you are checking. Black and white pictures have no Gray Curve.
M: Color Map. All the RGB values for each color in the palette for the
picture you are checking. Black is represented by 0,0,0 and white is
represented by 65535,65535,65535. All of the other colors in the palette
are represented as values of red, green, and blue from 0 to 65535. Black
and white pictures have no Color Map.
N: Next Image. TIFFDUMP information about the next image in the TIFF
file if you have opened a TIFF file that contains more than one picture.
Q: Quit. Allows you to leave the TIFFDUMP utility.
Running TIFFDUMP from DOS
You can use the TIFFDUMP utility in DOS. To do this, exit Windows and
type the following command at the DOS prompt:
[drive:][path]TIFFDUMP [drive:][path] {tiffilename}
For example, if the TIFFDUMP utility is in C:\UTILITIES and
SPACEMAN.TIF is in D:\PICTURES you would type this command line:
C:\UTILITIES\TIFFDUMP D:\PICTURES\SPACEMAN.TIF