Linux command
pamgamma 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
Apply gamma correction
pamgamma [2.2] [input.pam] > [output.pam]
Apply inverse gamma
pamgamma [0.45] [input.pam] > [output.pam]
Convert sRGB to linear
pamgamma -ungamma [input.pam] > [linear.pam]
Convert linear to sRGB
pamgamma -gamma [linear.pam] > [srgb.pam]
说明
pamgamma applies gamma correction to images. Gamma correction adjusts the brightness curve; values > 1 darken midtones, values < 1 brighten them. Standard display gamma is approximately 2.2; inverse is about 0.45.
参数
- gamma
- Gamma value (> 0).
- -ungamma
- Remove gamma (to linear).
- -gamma
- Apply gamma (to sRGB).
- -bt709
- Use BT.709 transfer.
- -srgb
- Use sRGB transfer.
FAQ
What is the pamgamma command used for?
pamgamma applies gamma correction to images. Gamma correction adjusts the brightness curve; values > 1 darken midtones, values < 1 brighten them. Standard display gamma is approximately 2.2; inverse is about 0.45.
How do I run a basic pamgamma example?
Run `pamgamma [2.2] [input.pam] > [output.pam]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does gamma do in pamgamma?
Gamma value (> 0).