Linux command
ppmdist 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
Example
ppmdist -intensity [input.ppm] > [output.pgm]
Example
ppmdist -frequency [input.ppm] > [output.pgm]
说明
ppmdist reads a PPM image and produces a PGM output with evenly distributed gray levels. An input of n colors produces n gray levels, maximizing contrast in the output. The mapping order is controlled by the -intensity or -frequency options. Most useful for images with a small number of colors. Part of the Netpbm toolkit.
参数
- -intensity
- Sort input colors by grayscale intensity before mapping to evenly distributed gray levels.
- -frequency
- Sort input colors by number of occurrences before mapping to evenly distributed gray levels.
FAQ
What is the ppmdist command used for?
ppmdist reads a PPM image and produces a PGM output with evenly distributed gray levels. An input of n colors produces n gray levels, maximizing contrast in the output. The mapping order is controlled by the -intensity or -frequency options. Most useful for images with a small number of colors. Part of the Netpbm toolkit.
How do I run a basic ppmdist example?
Run `ppmdist -intensity [input.ppm] > [output.pgm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -intensity do in ppmdist?
Sort input colors by grayscale intensity before mapping to evenly distributed gray levels.