Linux command
pnmhisteq 命令
文本
涉及管道、覆盖或删除，执行前请先确认路径和参数。
常用示例
Equalize histogram
pnmhisteq [input.pnm] > [output.pnm]
Verbose output
pnmhisteq -verbose [input.pnm] > [output.pnm]
Equalize grayscale
ppmtopgm [input.ppm] | pnmhisteq > [output.pgm]
说明
pnmhisteq performs histogram equalization on a PNM image. This process spreads out the most frequent intensity values, improving contrast in images with clustered brightness levels. Part of Netpbm toolkit for image enhancement.
参数
- -gray
- Equalize on gray value.
- -verbose
- Print information.
FAQ
What is the pnmhisteq command used for?
pnmhisteq performs histogram equalization on a PNM image. This process spreads out the most frequent intensity values, improving contrast in images with clustered brightness levels. Part of Netpbm toolkit for image enhancement.
How do I run a basic pnmhisteq example?
Run `pnmhisteq [input.pnm] > [output.pnm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -gray do in pnmhisteq?
Equalize on gray value.