patch_extractor_edges.py 文件源码

def is_boarder(patch, sigma):
    """
    this function evaluates the canny filter ovet the passed patch
    returning through boolean
    wheather or not the image can be catalogued as boarder retrieving the
    boolean value of the center
    :param patch: the image to filter
    :param sigma: sigma value for the canny filter
    :return: boolean value
    """
    bool_patch = canny( patch, sigma=sigma )
    return bool_patch[patch.shape[0] / 2][patch.shape[1] / 2]