Pixel Per Line Portable PixMap (pplppm)
Loads the image at the given path.
Outputs the image to stdout as a P3 (ASCII) .ppm image with each pixel on its own line.
The first 3 lines outputted are the .ppm header.
Each color channel value is [0-255].
Returns 0 on success.
On error, prints to stderr and returns greater than 0.
Dependencies:
- C99 standard library
- stb_image (included in
vendordir)
How many unique colors are in an image?
Subtract 3 (due to .ppm header) from the number given by ./pplppm path/to/image | sort -u | wc -l