Generate PNM Histogram - Visualize Image Data | Online Free DevTools by Hexmos
Generate PNM histogram data with pnmhistmap. Analyze image color distribution and intensity values. Free online tool, no registration required.
pnmhistmap
Draw a histogram of a PNM image. More information: https://netpbm.sourceforge.net/doc/pnmhistmap.html.
- Draw a histogram of a PNM image:
pnmhistmap {{path/to/input.pnm}} > {{path/to/output.pnm}}
- Draw the histogram as dots instead of bars:
pnmhistmap {{[-d|-dots]}} {{path/to/input.pnm}} > {{path/to/output.pnm}}
- Specify the range of intensity values to include:
pnmhistmap {{[-l|-lval]}} {{minval}} {{[-rv|-rval]}} {{maxval}} {{path/to/input.pnm}} > {{path/to/output.pnm}}