opencv/modules/python/test/test_algorithm_rw.py

#!/usr/bin/env python

'''
Algorithm serializaion test
'''
import cv2 as cv

from tests_common import NewOpenCVTests

class algorithm_rw_test(NewOpenCVTests):
    def test_algorithm_rw(self):
        # some arbitrary non-default parameters
        gold = cv.AKAZE_create(descriptor_size=1, descriptor_channels=2, nOctaves=3, threshold=4.0)
        gold.write(cv.FileStorage("params.yml", 1), "AKAZE")

        fs = cv.FileStorage("params.yml", 0)
        algorithm = cv.AKAZE_create()
        algorithm.read(fs.getNode("AKAZE"))

        self.assertEqual(algorithm.getDescriptorSize(), 1)
        self.assertEqual(algorithm.getDescriptorChannels(), 2)
        self.assertEqual(algorithm.getNOctaves(), 3)
        self.assertEqual(algorithm.getThreshold(), 4.0)