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- PIX(5) FILE FORMATS PIX(5)
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- NAME
- pix - Color RGB image file format and utilities
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- FORMAT
- A pix file contains sequences of pixels. Each pixel is
- stored as three unsigned chars, first red, then green, then
- blue. The intensity of each color ranges from 0 ("off") to
- 255 ("on"). The first pixel in a pix file is the lower left
- corner of the image. The pixels proceed from left-to-right
- across each scanline, with scanlines being written from the
- bottom to the top of the image.
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- By convention, pix images are usually square, and thus their
- dimensions can be determined by the file size. If this is
- not the case, often only the file width need be known by a
- program reading the file. History has left us with two
- "standard" sizes, 512x512 and the "hires" 1024x1024. A com-
- mon practice for other file sizes is to include the file
- width in the filename.
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- At some time in the future pix files will probably get
- self-typing headers so that parameters such as their size
- can be automatically determined by programs.
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- UTILITIES
- pix-fb display a .pix format image on a framebuffer.
- fb-pix produce a .pix file from a framebuffer image.
- pix-bw convert a .pix file to a black and white .bw file.
- bw-pix convert a black and white .bw file to a .pix file.
- ap-pix convert an Applicon Color Plotter file to a .pix
- file.
- pixtile combine several small .pix files into one large one.
- pixstat gives statistics concerning a .pix file.
- pixhist displays a color histogram on a framebuffer.
- pixhist3d display three views of an RGB color space histo-
- gram on a framebuffer.
- pixhist3d-pl unix plot of RGB color space utilization.
- pixdiff shows which pixels/colors differ between two .pix
- files.
- pixrect extracts an arbitrary rectangle from a .pix file.
- pixrot rotate, reverse, or invert a .pix file.
- pixscale scale a .pix file up or down.
- pixfilter a collection of 3x3 kernel filters for .pix files.
- bw3-pix merges three .bw files into one .pix file.
- pix-bw3 separates .pix file RGB colors into three .bw files.
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- FILES
- file.pix
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- SEE ALSO
- brlcad(1), bw(5), and above named programs.
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- Sun Release 4.1 Last change: BRL/CAD 1
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