birdCLEF_spec.py 文件源码

def filter_isolated_cells(array, struct):

    filtered_array = np.copy(array)
    id_regions, num_ids = ndimage.label(filtered_array, structure=struct)
    id_sizes = np.array(ndimage.sum(array, id_regions, range(num_ids + 1)))
    area_mask = (id_sizes == 1)
    filtered_array[area_mask[id_regions]] = 0

    return filtered_array

#Decide if given spectrum shows bird sounds or noise only