ofxImageToPalette

OpenFrameworks addon for extracting a palette from an image. ofxImageToPalette uses k mean clustering to group similar pixels. Pixel distance measured in L\A\B\ color space. Converting images to palettes is not deterministic. Every time ``getPalette()` is run on an image it will produce a differant output.

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Usage

Basic `c++ ofImage image; image.load("vangogh.jpeg"); std::vector<ofFloatColor> palette = ofxImageToPalette::getPalette(image,5,3);

Save palettes to data folder

c++ std::vector<std::vector<ofFloatColor>> palettes; ofImage image; image.load("vangogh.jpeg"); palettes.push_back(ofxImageToPalette::getPalette(image,5,3)); ofxImageToPalette::savePalettes(palettes);

Load palettes from data folder

c++ std::vector<std::vector<ofFloatColor>> palettes = loadPalettes();

Parameters

ofimage image

int k` Controls how many colors will be in the final output. `int epoch` Controls how many k means clustering iterations will be run, higher values will return colors that are more washed out. `int imageResize` Image will be resized before being processed for performance. `bool useLabDistance`` If set to false color will measured with euclidean distance.

Limitations

Three channel images only. Can only return ofFloatColor palettes.

Further work

Option to create a deterministic output. Add functions to change a palettes brightness, contrast, etc. Experiment with using ofColor.getLightness() to filter out similar colors. Experiment with using L\A\B\ distance to pick colors that are very unique. Add a function that will draw an imgui palette editor.