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rgb2ycbcr(1) [linux man page]

rgb2ycbcr(1)							   User Commands						      rgb2ycbcr(1)

NAME

       rgb2ycbcr - convert non-YCbCr TIFF images to YCbCr TIFF images

SYNOPSIS

       rgb2ycbcr [options] src1.tif [src2.tif...] dest.tif

DESCRIPTION

       rgb2ycbcr converts RGB color, grayscale, 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, and output data files are  compressed  with  the
       LZW  compression scheme, with each strip no more than 8 kilobytes. These characteristics can be overridden or explicitly specified with the
       options described below.

OPTIONS

       The following options are supported:

       -c	       Specify a compression scheme to use when writing image data:

		       -c jpeg		       Baseline JPEG compression algorithm.

		       -c lzw		       Lempel-Ziv and Welch algorithm. This is the default algorithm.

		       -c none		       No compression.

		       -c packbits	       PackBits compression algorithm.

       -h	       Set the horizontal sampling dimension to one of the following: 1, 2, or 4. The default value is 2.

       -r	       Write data with a specified number of rows per strip. By default, the number of rows per strip is  selected  so	that  each
		       strip is approximately 8 kilobytes.

       -v	       Set the vertical sampling dimension to one of the following: 1, 2, or 4. The default value is 2.

OPERANDS

       The following operands are supported:

       src.tif	       The name of the input file that contains non-YCbCr TIFF data.

       dest.tif        The name of the output file that contains YCbCr TIFF data.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       tiffinfo(1), tiffcp(1), libtiff(3)

NOTES

       Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.10							    26 Mar 2004 						      rgb2ycbcr(1)

Check Out this Related Man Page

gif2tiff(1)							   User Commands						       gif2tiff(1)

NAME

       gif2tiff - create a TIFF file from a GIF87 format image file

SYNOPSIS

       gif2tiff [options] input.gif output.tif

DESCRIPTION

       gif2tiff  converts a file in the GIF87 format to TIFF.  The TIFF image is created as a palette image, with samples compressed with the Lem-
       pel-Ziv and Welch algorithm (Compression=5). These characteristics can be overridden or explicitly specified  with  the	options  described
       below.

OPTIONS

       The following options are supported:

       -c	       Specify a compression scheme to use when writing image data:

		       -c lzw		       Lempel-Ziv and Welch algorithm. This is the default algorithm.

		       -c none		       No compression.

		       -c packbits	       PackBits compression algorithm.

		       -c zip		       Deflate compression algorithm.

       -r	       Write  data  with  a  specified number of rows per strip. By default, the number of rows per strip is selected so that each
		       strip is approximately 8 kilobytes.

OPERANDS

       The following operands are supported:

       input.gif       The name of the input file that contains GIF87 data.

       output.tif      The name of the output file that contains TIFF data.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3)

NOTES

       Updated by Breda McColgan, Sun Microsystems  Inc., 2004.

SunOS 5.10							    26 Mar 2004 						       gif2tiff(1)
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