Linux command
pgmedge 命令
文本
Uses pipes, overwrite, or deletion. Check paths and options first.
命令示例
Detect edges in image
pgmedge [input.pgm] > [output.pgm]
From another format
jpegtopnm [image.jpg] | ppmtopgm | pgmedge > [edges.pgm]
Chain with conversion
pgmedge [input.pgm] | pnmtopng > [edges.png]
说明
pgmedge detects edges in a PGM grayscale image using the Sobel edge detection algorithm. Output is a PGM where bright pixels indicate strong edges. The algorithm computes the horizontal and vertical image gradients using Sobel kernels and combines them, producing a single intensity per pixel proportional to the local gradient magnitude.
参数
- pgmfile
- Input PGM file. Uses stdin if not specified.
FAQ
What is the pgmedge command used for?
pgmedge detects edges in a PGM grayscale image using the Sobel edge detection algorithm. Output is a PGM where bright pixels indicate strong edges. The algorithm computes the horizontal and vertical image gradients using Sobel kernels and combines them, producing a single intensity per pixel proportional to the local gradient magnitude.
How do I run a basic pgmedge example?
Run `pgmedge [input.pgm] > [output.pgm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does pgmfile do in pgmedge?
Input PGM file. Uses stdin if not specified.