Simple CLI tool to spatially equalize image luminance
pip3 install eqlmThe main program can be invoked either through the eqlm command or through the Python main module option python3 -m eqlm.
usage: eqlm [-h] [-v] [-m {luminance,brightness,saturation,lightness}]
[-n M N] [-t RATE] [-c] [-e] [-u] [-g [GAMMA]] [-d {8,16}]
IN_FILE [OUT_FILE]positional arguments:
IN_FILE input image file path (use '-' for stdin)
OUT_FILE output PNG image file path (use '-' for stdout)
(default: Auto)
options:
-h, --help show this help message and exit
-v, --version show program's version number and exit
-m {luminance,brightness,saturation,lightness}, --mode {luminance,brightness,saturation,lightness}
processing mode (default: luminance)
-n M N, --divide M N divide image into MxN blocks for aggregation
(note that it doesn't respect Exif orientation) (default: (2, 2))
-t RATE, --target RATE
output level target rate, 0.0 (min) to 1.0 (max) (default: Average)
-e, --median aggregate each block using median (default: False)
-u, --unweighted disable alpha channel weighting (default: False)
-g [GAMMA], --gamma [GAMMA]
apply inverse gamma correction before process [GAMMA=2.2] (default: None)
-d {8,16}, --depth {8,16}
bit depth of the output PNG image (default: 8)
GNU Affero General Public License v3.0