k - the maximum number of iterations allowed in the algorithm t - a threshold value for determining when a datum fits a model d - the number of close data values required to assert that a model fits well to data output: best_model - model parameters which best fit the data (or nil i...
cv2.error: OpenCV(3.4.3) C:\projects\opencv-python\opencv_contrib\modules\xfeatures2d\src\sift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in ...
第一个是 IndexParams。 index_params = dict(algorithm = FLANN_INDEX_KDTREE, trees = 5) 。 这里使用的是KTreeIndex配置索引,指定待处理核密度树的数量(理想的数量在1-16)。 第二个字典是SearchParams。 search_params = dict(checks=100)用它来指定递归遍历的次数。值越高结果越准确,但是消耗的时间也越...
3 创建SIFT对象：sift = cv2.xfeatures2d.SIFT_create()创建Flann匹配：match = cv2.FlannBasedMatcher(dict(algorithm =2, trees =1), {})检测特征点，并描述特征点：kp1, de1 = sift.detectAndCompute(g1,None)kp2, de2 = sift.detectAndCompute(g2,None)4 用knn匹配，来提取de1和de2的靠前的数据...
index_params = dict(algorithm=FLANN_INDEX_KDTREE, trees=5) search_params = dict(checks=50) flann = cv2.FlannBasedMatcher(index_params, search_params) matches = flann.knnMatch(des1, des2, k=2) # 应用比率测试 good_matches = []
SIFT算法好像专利到期了,根据opencv官方文档 Class for extracting keypoints and computing descriptors using the Scale Invariant Feature Transform (SIFT) algorithm by D. Lowe [145] . [145]David G. Lowe…
我在执行SIFT后得到了一个点集,我想找出这些points.Is的外部不规则形状,有谁知道algorithm.Now中的相关函数吗?请注意,我不想要凸hall.Thank你! 浏览2提问于2013-04-12得票数 1 1回答 替换UIImage中的所有纯色 、、、 我正在尝试通过使用实体形状的SIFT算法来执行图像识别。为了提高性能,我想拍摄图像(从...
反向传播算法 反向传播算法(Back Propagation Algorithm)的定义:反向传播(Backpropagation,缩写为BP)是“误差反向传播”的简称,是一种与最优化方法(如梯度下降法)结合使用的,用来训练人工神经网络的常见方法。该方法对网络中所有权重计算损失函数的梯度。这个梯度会反馈给最优化方法,用来更新权值以最小化损失函数。下面以...
. (measured in SIFT algorithm as the local contrast) . . @param nOctaveLayers The number of layers in each octave. 3 is the value used in D. Lowe paper. The . number of octaves is computed automatically from the image resolution. ...
error: OpenCV(4.1.0) C:\projects\opencv-python\opencv_contrib\modules\xfeatures2d\src\sift.cpp:1207: error: (-213:The function/feature is not implemented) This algorithm is patented and is excluded in this configuration; Set OPENCV_ENABLE_NONFREE CMake option and rebuild the library in funct...