| photohisto | Calculate a histogram-vector from an image |
| <image> | grayscale image to be histogrammed |
| [-fout <field>] | optional field name for histogram vector |
This command calculates the histogram-vector <image>_grayhis from an image, unless <field> is specified.
| histoeq | Perform histogram equalization for a given grayscale image |
| -in <image> | input image |
| -out <imageout> | histogram-equalized image |
This command performs histogram equalization for a given grayscale image, and provides an equalized image as a result.