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  • python图像特征提取

     这里使用的是python 3.5 、opencv_python-3.4.0+contrib,特征提取的代码如下:

    import cv2
    
    img = cv2.imread("feature.jpg")
    img = cv2.resize(img,(136 * 3,76 * 3))
    cv2.imshow("original",img)
    
    gray = cv2.cvtColor(img,cv2.COLOR_RGB2GRAY)
    
    #使用SIFT
    sift = cv2.xfeatures2d.SIFT_create()                    
    keypoints, descriptor = sift.detectAndCompute(gray,None)
    
    cv2.drawKeypoints(image = img,
                      outImage = img,
                      keypoints = keypoints,
                      flags = cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS,
                      color = (51,163,236))
    cv2.imshow("SIFT",img)
    
    #使用SURF
    img = cv2.imread("feature.jpg")
    img = cv2.resize(img,(136 * 3,76 * 3))
    
    surf = cv2.xfeatures2d.SURF_create()
    keypoints, descriptor = surf.detectAndCompute(gray,None)
    
    cv2.drawKeypoints(image = img,
                      outImage = img,
                      keypoints = keypoints,
                      flags = cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS,
                      color = (51,163,236))
    cv2.imshow("SURF",img)
    
    img = cv2.imread("feature.jpg")
    img = cv2.resize(img,(136 * 3,76 * 3))
    
    cv2.waitKey(0)
    cv2.destroyAllWindows()

    结提取果:

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  • 原文地址:https://www.cnblogs.com/youmuchen/p/8299197.html
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