RGB2YCBCR(1) General Commands Manual RGB2YCBCR(1)NAME
rgb2ycbcr - convert non-YCbCr TIFF images to a YCbCr TIFF image
SYNOPSIS
rgb2ycbcr [ options ] src1.tif src2.tif ... dst.tif
DESCRIPTION
rgb2ycbcr converts RGB color, greyscale, or bi-level TIFF images to YCbCr images by transforming and sampling pixel data. If multiple
files are specified on the command line each source file is converted to a separate directory in the destination file.
By default, chrominance samples are created by sampling 2 by 2 blocks of luminance values; this can be changed with the -h and -v options.
Output data are compressed with the LZW compression scheme, by default; an alternate scheme can be selected with the -c option. By
default, output data are compressed in strips with the number of rows in each strip selected so that the size of a strip is never more than
8 kilobytes; the -r option can be used to explicitly set the number of rows per strip.
OPTIONS -c Specify a compression scheme to use when writing image data: -c none for no compression, -c packbits for the PackBits compression
algorithm, -c jpeg for the JPEG compression algorithm, and -c lzw for Lempel-Ziv & Welch (the default).
-h Set the horizontal sampling dimension to one of: 1, 2 (default), or 4.
-r Write data with a specified number of rows per strip; by default the number of rows/strip is selected so that each strip is approxi-
mately 8 kilobytes.
-v Set the vertical sampling dimension to one of: 1, 2 (default), or 4.
SEE ALSO tiffinfo(1), tiffcp(1), libtiff(3)
October 15, 1995 RGB2YCBCR(1)
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RGB2YCBCR(1) General Commands Manual RGB2YCBCR(1)NAME
rgb2ycbcr - convert non-YCbCr TIFF images to a YCbCr TIFF image
SYNOPSIS
rgb2ycbcr [ options ] src1.tif src2.tif ... dst.tif
DESCRIPTION
rgb2ycbcr converts RGB color, greyscale, or bi-level TIFF images to YCbCr images by transforming and sampling pixel data. If multiple files
are specified on the command line each source file is converted to a separate directory in the destination file.
By default, chrominance samples are created by sampling 2 by 2 blocks of luminance values; this can be changed with the -h and -v options.
Output data are compressed with the PackBits compression scheme, by default; an alternate scheme can be selected with the -c option. By
default, output data are compressed in strips with the number of rows in each strip selected so that the size of a strip is never more than
8 kilobytes; the -r option can be used to explicitly set the number of rows per strip.
OPTIONS -c Specify a compression scheme to use when writing image data: -c none for no compression, -c packbits for the PackBits compression
algorithm (the default), -c jpeg for the JPEG compression algorithm, -c zip for the deflate compression algorithm, and -c lzw for
Lempel-Ziv & Welch.
-h Set the horizontal sampling dimension to one of: 1, 2 (default), or 4.
-r Write data with a specified number of rows per strip; by default the number of rows/strip is selected so that each strip is approxi-
mately 8 kilobytes.
-v Set the vertical sampling dimension to one of: 1, 2 (default), or 4.
SEE ALSO tiffinfo(1), tiffcp(1), libtiff(3)
Libtiff library home page: http://www.remotesensing.org/libtiff
libtiff November 2, 2005 RGB2YCBCR(1)
hi all
is there any process in which i can get alternate rows of a file.i want to do further processing on those alternate rows.i want to select row1,row3,row5.... like this from a file. (3 Replies)
Can an expert kindly write an efficient Linux ksh script that will strip rows with no numbers from a text file?
Supposing there are three rows that text file called text.txt :
"field1","field2","field3",11,22,33,44
"field1","field2","field3",1,2,3,4
"field1","field2","field3",,,,
The... (5 Replies)
Hi Friends,
How to add if data is in different rows.
Input:
1;20091102;20170930;-9.00;|
1;20091026;20170930;-2.00;|
1;20100720;20170930;-25.00;|
1;20090901;20211227;-10.00;|
Output
9+2+25+10 = 46
Thx
Suresh (4 Replies)