mirror of
https://git.FreeBSD.org/ports.git
synced 2024-12-05 01:55:52 +00:00
25 lines
1.3 KiB
Plaintext
25 lines
1.3 KiB
Plaintext
Adapted from the README: the FBM collection provides a complete package for
|
|
manipulating and converting images, including 24-bit RGB, 8-bit color, 8-bit
|
|
grayscale, and 1-bit bitmaps. This is a partial list of the commands:
|
|
fbclean Flip isolated pixels (clean image)
|
|
fbconv Arbitrary convolutions
|
|
fbedge Compute derivative image (edge detection)
|
|
fbext Extract region, resize, change aspect ratio
|
|
fbgamma Gamma correct grayscale or color image for display
|
|
fbhalf Halftone grayscale image (Blue noise, Floyd-Steinberg, etc)
|
|
fbhist Compute histogram
|
|
fbmask Set region to gray value
|
|
fbmedian Median filter 3x3 regions
|
|
fbnorm Normalize image intensity / increase contrast
|
|
fbquant Color quantization (24-bit to 8..256 colors) Mod. Heckbert
|
|
fbrot Rotate 90, 180, or 270 degrees
|
|
fbthin Thin 1-bit images
|
|
fbsharp Sharpen (edge enhancement) by digital Laplacian
|
|
idiff (and udiff) convert raw byte stream into byte difference
|
|
pbmtitle Add a title to a PBM file
|
|
The FBM utilities handle these image formats: native FBM, UseNet Facesaver, raw
|
|
(e.g. Amiga Digiview), Targa, Sun rasterfile with 32 byte header, Aldus TIFF,
|
|
Poskanzer PBM format for 1-bit files, CompuServe GIF, JPEG JFIF, Utah RLE, Amiga
|
|
IFF (except HAM mode), PC PaintBrush PCX, and Bennet Yee's 1-bit Face files.
|
|
Amiga HAM, Diablo graphics, and PostScript output is available.
|