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 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 Lem
pel-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 approximately 8
kilobytes.
-v Set the vertical sampling dimension to one of: 1, 2
(default), or 4.
SEE ALSOtiffinfo(1), tiffcp(1), libtiff(3)
October 15, 1995 RGB2YCBCR(1)
