Linux command
ppmquantall 命令
文本
复制后可按需替换文件名、目录或参数。
常用示例
Quantize images to same 256-color palette
ppmquantall [256] [*.ppm]
Quantize with output to new files
ppmquantall -ext [.quant] [256] [*.ppm]
说明
ppmquantall takes multiple PPM images as input, chooses the best _ncolors_ colors to represent all images, maps existing colors to the new palette, and overwrites the input files with the quantized versions. Useful for creating GIF animations where all frames must share a single palette. Part of the Netpbm toolkit. Superseded by pnmquantall (Netpbm 10.58, March 2012), which handles all Netpbm input formats.
参数
- -ext _extension_
- Write output files with this extension appended instead of overwriting originals.
FAQ
What is the ppmquantall command used for?
ppmquantall takes multiple PPM images as input, chooses the best _ncolors_ colors to represent all images, maps existing colors to the new palette, and overwrites the input files with the quantized versions. Useful for creating GIF animations where all frames must share a single palette. Part of the Netpbm toolkit. Superseded by pnmquantall (Netpbm 10.58, March 2012), which handles all Netpbm input formats.
How do I run a basic ppmquantall example?
Run `ppmquantall [256] [*.ppm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -ext _extension_ do in ppmquantall?
Write output files with this extension appended instead of overwriting originals.