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rgb2ycbcr(1) [opensolaris 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 |Uncommitted | +-----------------------------+-----------------------------+ SEE ALSO
tiffinfo(1), tiffcp(1), libtiff(3) NOTES
Updated by Breda McColgan, Sun Microsystems Inc., 2004. SunOS 5.11 26 Mar 2004 rgb2ycbcr(1)

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ras2tiff(1)							   User Commands						       ras2tiff(1)

NAME
ras2tiff - create a TIFF file from a Sun rasterfile SYNOPSIS
ras2tiff [options] input.ras output.tif DESCRIPTION
ras2tiff converts a file in the Sun rasterfile format to TIFF. By default, the TIFF image is created with data samples packed (PlanarCon- figuration=1), compressed with the Lempel-Ziv and Welch algorithm (Compression=5), and with each strip no more than 8 kilobytes. These characteristics can be overridden or explicitly specified with the options described below. Any colormap information in the rasterfile is carried over to the TIFF file by including a Colormap tag in the output file. If the raster- file has a colormap, the PhotometricInterpretation tag is set to 3 (palette). Otherwise, the PhotometricInterpretation tag is set to 2 (RGB) if the depth is 24, or to 1 (min-is-black) if the depth is not 24. 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. -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.ras The name of the input file that contains Sun rasterfile 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 |Uncommitted | +-----------------------------+-----------------------------+ SEE ALSO
pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3) NOTES
Does not support all possible rasterfiles. In particular, ras2tiff does not support run-length encoded images. Updated by Breda McColgan, Sun Microsystems Inc., 2004. SunOS 5.11 26 Mar 2004 ras2tiff(1)
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