def test_trim_common_prefixes():
This function finds contours, draws them and their approximation by ellipses.
dataset/ETHPy150Open bioinformed/vgraph/tests/test_norm.py/test_trim_common_prefixes--crossover with--dataset/ETHPy150Open fatcloud/PyCV-time/opencv-official-samples/earlier/fitellipse.py/FitEllipse.process_image