Linux command
pamdepth 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
Reduce to 8-bit
pamdepth [255] [input.pam] > [output.pam]
Promote to 16-bit
pamdepth [65535] [input.pam] > [output.pam]
Reduce to 1-bit
pamdepth [1] [input.pam] > [output.pam]
Read from stdin via pipe
pnmtopam [input.ppm] | pamdepth [255] > [output.pam]
说明
pamdepth rescales the maxval (per-sample resolution) of a Netpbm/PAM image. Increasing the maxval is lossless; decreasing it loses precision but never changes the image's tuple type or width/height. If the input already has the requested maxval, pamdepth copies it through unchanged. Use pamdepth 1 to drop a grayscale image down to bilevel, or pamdepth 65535 to widen an 8-bit image so subsequent processing avoids quantization.
FAQ
What is the pamdepth command used for?
pamdepth rescales the maxval (per-sample resolution) of a Netpbm/PAM image. Increasing the maxval is lossless; decreasing it loses precision but never changes the image's tuple type or width/height. If the input already has the requested maxval, pamdepth copies it through unchanged. Use pamdepth 1 to drop a grayscale image down to bilevel, or pamdepth 65535 to widen an 8-bit image so subsequent processing avoids quantization.
How do I run a basic pamdepth example?
Run `pamdepth [255] [input.pam] > [output.pam]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
Where can I find more pamdepth examples?
This page includes 4 examples for pamdepth, plus related commands for nearby Linux tasks.