Linux command
ppmrelief 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
Create embossed relief effect
ppmrelief [input.ppm] > [output.ppm]
说明
ppmrelief applies a convolution filter to a PPM image that creates an embossed relief effect, giving the image a three-dimensional chiseled appearance. Edges in the original image appear as raised ridges lit from one direction, while flat areas become a neutral gray. The effect works by computing the difference between adjacent pixels, which highlights edges while suppressing uniform regions. Part of the Netpbm toolkit.
FAQ
What is the ppmrelief command used for?
ppmrelief applies a convolution filter to a PPM image that creates an embossed relief effect, giving the image a three-dimensional chiseled appearance. Edges in the original image appear as raised ridges lit from one direction, while flat areas become a neutral gray. The effect works by computing the difference between adjacent pixels, which highlights edges while suppressing uniform regions. Part of the Netpbm toolkit.
How do I run a basic ppmrelief example?
Run `ppmrelief [input.ppm] > [output.ppm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.