tiff2rgba - convert a TIFF image to RGBA color space
tiff2rgba [ options ] input.tif output.tif
TIFF2RGBA(1) General Commands Manual TIFF2RGBA(1) NAME tiff2rgba - convert a TIFF image to RGBA color space SYNOPSIS tiff2rgba [ options ] input.tif output.tif DESCRIPTION Tiff2rgba converts a wide variety of TIFF images into an RGBA TIFF image. This includes the ability to translate different color spaces and photometric interpretation into RGBA, support for alpha blending, and translation of many different bit depths into a 32bit RGBA image. Internally this program is implemented using the TIFFReadRGBAImage() function, and it suffers any limitations of that image. This includes limited support for > 8 BitsPerSample images, and flaws with some eso- teric combinations of BitsPerSample, photometric interpretation, block organization and planar configuration. The generated images are stripped images with four samples per pixel (red, green, blue and alpha) or if the -n flag is used, three samples per pixel (red, green, and blue). The resulting images are always pla- nar configuration contiguous. For this reason, this program is a use- ful utility for transform exotic TIFF files into a form ingestible by almost any TIFF supporting software. OPTIONS -c Specify a compression scheme to use when writing image data: -c none for no compression (the default), -c packbits for the Pack- Bits compression algorithm, -c zip for the Deflate compression algorithm, -c jpeg for the JPEG compression algorithm, and -c lzw for Lempel-Ziv & Welch. -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. -b Process the image one block (strip/tile) at a time instead of by reading the whole image into memory at once. This may be neces- sary for very large images on systems with limited RAM. -n Drop the alpha component from the output file, producing a pure RGB file. Currently this does not work if the -b flag is also in effect. -M size Set maximum memory allocation size (in MiB). The default is 256MiB. Set to 0 to disable the limit. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+-----------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+-----------------------+ |Availability | image/library/libtiff | +---------------+-----------------------+ |Stability | Volatile | +---------------+-----------------------+ SEE ALSO tiff2bw(1), TIFFReadRGBAImage(3t), libtiff(3) Libtiff library home page: http://www.simplesystems.org/libtiff/ NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from http://down- load.osgeo.org/libtiff/tiff-4.2.0.tar.gz. Further information about this software can be found on the open source community website at http://www.simplesystems.org/libtiff/. libtiff November 2, 2005 TIFF2RGBA(1)