Apr 09, 2014 · I doubt you tried to display the histograms with imshow function. Since the histogram is in the dimension of 1 x image_width and 1 x image_height, you cannot see anything in the window. If you need to show the histogram then you need to normalize the histogram and draw the histogram lines manually in a Mat object, so then you can show it. 1. Computing features with MusicExtractor¶. MusicExtractor is a multi-purpose algorithm for feature extraction from files (see the complete list of computed features here).It combines many algorithms and is also used inside the Essentia’s command-line Music Extractor.
features color and texture extraction algorithms. Humans tend to differentiate images based on color, therefore color features are mostly used in CBIR. Color histogram is mostly used to represent color features but it cannot entirely characterize the image. Color Histogram is also rotation invariant about the view axis. Regularity,