ofxAddons
Convert scalar data (grayscale images) to pseudo-color images with linear segmented color maps.
Forks
Forks pushed to more recently than luteberget/ofxColorMap itself, plus any admin-confirmed fork with commits of its own — worth checking if you're hitting issues with the original.
README
ofxColorMap
Colorize your grayscale images with a linear segmented color map, as used in scientific plotting. Maps are taken from Matplotlib.
Usage
Add an ofxColorMap object to your app. Select a colormap Use a preset colormap. See list of preset maps below. colormap.setMapFromName("summer")
Alternatively, make your own color map. See matplotlib documentation for an explanation of the parameters.
ofxColorMap::ColorMapChannel r ; r .push_back(ofVec3f( 0.0,0.0,0.0 )); r .push_back(ofVec3f( 1.0,1.0,1.0 ));
ofxColorMap::ColorMapChannel g ; g .push_back(ofVec3f( 0.0,0.5,0.5 )); g .push_back(ofVec3f( 1.0,1.0,1.0 ));
ofxColorMap::ColorMapChannel b ; b .push_back(ofVec3f( 0.0,0.4,0.4 )); b .push_back(ofVec3f( 1.0,0.4,0.4 ));
ofxColorMap::ColorMap m; m.push_back(r); m.push_back(g); m.push_back(b);
colormap.set(m);
- Convert a grayscale ofImage (of type OF_IMAGE_GRAYSCALE) to a color image (allocated to same size with type OF_IMAGE_COLOR).
colormap.apply(inputImage, outputImage);
Examples/screenshots
Available maps (from Matplotlib).
See: http://matplotlib.org/examples/color/colormaps_reference.html
