Open Source Computer Vision Library https://opencv.org/
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#!/usr/bin/env python
# Python 2/3 compatibility
from __future__ import print_function
import numpy as np
import cv2
import cv2.cv as cv
from tests_common import OpenCVTests
class NonFreeFunctionTests(OpenCVTests):
def test_ExtractSURF(self):
img = self.get_sample("samples/c/lena.jpg", 0)
w,h = cv.GetSize(img)
for hessthresh in [ 300,400,500]:
for dsize in [0,1]:
for layers in [1,3,10]:
kp,desc = cv.ExtractSURF(img, None, cv.CreateMemStorage(), (dsize, hessthresh, 3, layers))
self.assertTrue(len(kp) == len(desc))
for d in desc:
self.assertTrue(len(d) == {0:64, 1:128}[dsize])
for pt,laplacian,size,dir,hessian in kp:
self.assertTrue((0 <= pt[0]) and (pt[0] <= w))
self.assertTrue((0 <= pt[1]) and (pt[1] <= h))
self.assertTrue(laplacian in [-1, 0, 1])
self.assertTrue((0 <= dir) and (dir <= 360))
self.assertTrue(hessian >= hessthresh)