Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

ppmcolormask(1) [debian man page]

ppmcolormask(1) 					      General Commands Manual						   ppmcolormask(1)

NAME
ppmcolormask - produce mask of areas of a certain color in a PPM file SYNOPSIS
ppmcolormask color [ppmfile] DESCRIPTION
Reads a PPM file as input. Produces a PBM (bitmap) file as output. The output file is the same dimensions as the input file and is black in all places where the input file is the color color, and white everywhere else. The output of ppmcolormask is useful as an alpha mask input to pnmcomp. Note that you can generate such an alpha mask automatically as you convert to PNG format with pnmtopng(1). Use its -transparent option. ppmfile is the input file. If you don't specify ppmfile, the input is from Standard Input. The output goes to Standard Output. You can specify color five ways: o An X11-style color name (e.g. black). o An X11-style hexadecimal specifier: rgb:r/g/b, where r g and b are each 1- to 4-digit hexadecimal numbers. o An X11-style decimal specifier: rgbi:r/g/b, where r g and b are floating point numbers between 0 and 1. o For backwards compatibility, an old-X11-style hexadecimal number: #rgb, #rrggbb, #rrrgggbbb, or #rrrrggggbbbb. o For backwards compatibility, a triplet of numbers separated by commas: r,g,b, where r g and b are floating point numbers between 0 and 1. (This style was added before MIT came up with the similar rgbi style.) SEE ALSO
pgmtoppm(1), pnmcomp(1), pbmmask(1), ppm(5) AUTHOR
Bryan Henderson (bryanh@giraffe-data.com) 14 April 2000 ppmcolormask(1)

Check Out this Related Man Page

ppmcolormask(1)                                               General Commands Manual                                              ppmcolormask(1)

NAME
ppmcolormask - produce mask of areas of a certain color in a PPM file SYNOPSIS
ppmcolormask color [ppmfile] DESCRIPTION
Reads a PPM file as input. Produces a PBM (bitmap) file as output. The output file is the same dimensions as the input file and is black in all places where the input file is the color color, and white everywhere else. The output of ppmcolormask is useful as an alpha mask input to pnmcomp. Note that you can generate such an alpha mask automatically as you convert to PNG format with pnmtopng(1). Use its -transparent option. ppmfile is the input file. If you don't specify ppmfile, the input is from Standard Input. The output goes to Standard Output. You can specify color five ways: o An X11-style color name (e.g. black). o An X11-style hexadecimal specifier: rgb:r/g/b, where r g and b are each 1- to 4-digit hexadecimal numbers. o An X11-style decimal specifier: rgbi:r/g/b, where r g and b are floating point numbers between 0 and 1. o For backwards compatibility, an old-X11-style hexadecimal number: #rgb, #rrggbb, #rrrgggbbb, or #rrrrggggbbbb. o For backwards compatibility, a triplet of numbers separated by commas: r,g,b, where r g and b are floating point numbers between 0 and 1. (This style was added before MIT came up with the similar rgbi style.) SEE ALSO
pgmtoppm(1), pnmcomp(1), pbmmask(1), ppm(5) AUTHOR
Bryan Henderson (bryanh@giraffe-data.com) 14 April 2000 ppmcolormask(1)
Man Page

6 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Is there any way to makesure that the input from the user is all numbers?

Is there any way to makesure that the input from the user is all numbers? thankz (5 Replies)
Discussion started by: XXXXXXXXXX
5 Replies

2. Shell Programming and Scripting

How to generate a series of numbers

Hi All, I have a requirement where in I have an input as follows:- input=1-4,6,8-10,12-15 I need to explode this range into an output file as follows:- 1 2 3 4 6 8 9 10 12 13 14 15 My input may vary like 1,5-9,11-13,15-17....... (3 Replies)
Discussion started by: rony_daniel
3 Replies

3. Shell Programming and Scripting

how do you get input of a file to calculations

ex:- say you have a file called numbers.txt . and in it you have the following numbers 12 75 74 24 83 how do you get the sum of all those numbers? (6 Replies)
Discussion started by: nadman123
6 Replies

4. Shell Programming and Scripting

Insert decimal point for numbers

Hi In Unix, I have a file with some numbers like : 45600 12345 I want to insert a decimal point for these numbers based on user input. If the input is 2, the numbers should be changed to 456.00 123.45 If the input is 3, the numbers should be changed to 45.600 12.345 Can... (2 Replies)
Discussion started by: yoursdivu
2 Replies

5. Shell Programming and Scripting

Removing comma just from numbers

Hi Guys, I want to remove commas from just the numbers in the file. So both sides of the comma should be numbers. Input file Johan 1,234 nb jan 123,3 hi, hello, bye 12,345,54 hejhej Desired output: Johan 1234 nb jan (6 Replies)
Discussion started by: Johanni
6 Replies

6. Shell Programming and Scripting

NAWK conversion of hexadecimal input to decimal output via printf, I am close I can feel it

I have searched and the answers I have found thus far have led me to this point, so I feel I am just about there. I am trying to convert a column of hexadecimal to decimal values so that I can filter out via grep just the data I want. I was able to pull my original 3 character hex value and... (10 Replies)
Discussion started by: PCGameGuy
10 Replies

Featured Tech Videos