RGB2YCBCR(1)RGB2YCBCR(1)NAMErgb2ycbcr - convert non-YCbCr TIFF images to a YCbCr TIFF image
SYNOPSISrgb2ycbcr [ options ] src1.tif src2.tif ... dst.tif
DESCRIPTIONrgb2ycbcr 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 kilo‐
bytes; the -r option can be used to explicitly set the number of rows
OPTIONS-c Specify a compression scheme to use when writing image data: -c
none for no compression, -c packbits for the PackBits compres‐
sion 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),
-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
approximately 8 kilobytes.
-v Set the vertical sampling dimension to one of: 1, 2 (default),
SEE ALSOtiffinfo(1), tiffcp(1), libtiff(3)
October 15, 1995 RGB2YCBCR(1)