Linux command
pnmtofiasco 命令
文本
复制后可按需替换文件名、目录或参数。
常用示例
Convert PNM to FIASCO format
pnmtofiasco [input.pnm] -o [output.fco]
Specify quality
pnmtofiasco -q [50] [input.pnm] -o [output.fco]
Set optimization level
pnmtofiasco -z [2] [input.pnm] -o [output.fco]
Verbose
pnmtofiasco -V [2] [input.pnm] -o [output.fco]
说明
pnmtofiasco compresses PBM, PGM, or PPM images, or Standard Input if no file is named, and produces a FIASCO (Fractal Image And Sequence COdec) file on Standard Output. FIASCO uses fractal and wavelet-based compression. Part of the Netpbm toolkit.
参数
- -o, --output-name=_file_
- Write FIASCO output to named file. Default is Standard Output.
- -q, --quality=_N_
- Quality of compression (1=worst, 100=best). Default is 20.
- -z, --optimize=_N_
- Optimization level (0=fastest, 3=slowest). Default is 0.
- -b, --basis-name=_name_
- Preload compression basis (e.g., small.fco, medium.fco, large.fco).
- -V, --verbose=_N_
- Verbosity level: 0 (no output), 1 (progress meter), 2 (detailed statistics). Default is 1.
- -v, --version
- Print version number and exit.
- -h, --info
- Print brief help.
- -P, --prediction
- Enable predictive coding for video sequences.
FAQ
What is the pnmtofiasco command used for?
pnmtofiasco compresses PBM, PGM, or PPM images, or Standard Input if no file is named, and produces a FIASCO (Fractal Image And Sequence COdec) file on Standard Output. FIASCO uses fractal and wavelet-based compression. Part of the Netpbm toolkit.
How do I run a basic pnmtofiasco example?
Run `pnmtofiasco [input.pnm] -o [output.fco]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -o, --output-name=_file_ do in pnmtofiasco?
Write FIASCO output to named file. Default is Standard Output.