Linux command
pnmarith 命令
安全
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
Add two images
pnmarith -add [image1.pnm] [image2.pnm] > [result.pnm]
Subtract images
pnmarith -subtract [image1.pnm] [image2.pnm] > [result.pnm]
Multiply images
pnmarith -multiply [image1.pnm] [image2.pnm] > [result.pnm]
Take minimum values
pnmarith -minimum [image1.pnm] [image2.pnm] > [result.pnm]
说明
pnmarith performs arithmetic operations on two PNM images pixel by pixel. Images must have same dimensions. Useful for compositing, masking, and image comparison. Superseded by pamarith in modern Netpbm.
参数
- -add
- Add pixel values.
- -subtract
- Subtract pixel values.
- -multiply
- Multiply pixel values.
- -difference
- Absolute difference.
- -minimum
- Minimum of pixels.
- -maximum
- Maximum of pixels.
- -mean
- Average of pixels.
FAQ
What is the pnmarith command used for?
pnmarith performs arithmetic operations on two PNM images pixel by pixel. Images must have same dimensions. Useful for compositing, masking, and image comparison. Superseded by pamarith in modern Netpbm.
How do I run a basic pnmarith example?
Run `pnmarith -add [image1.pnm] [image2.pnm] > [result.pnm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -add do in pnmarith?
Add pixel values.