第四章(下)
OpenCV中有多种选取区域的方法,罗列在表中。使用方法如下,其中比较值得注意的是乘法和除法。 此外,它还有更多的功能 稀疏矩阵 The cv::SparseMat class is used when an array is likely to be very large compared to SparseMat(稀疏矩阵)在一个矩阵的绝大部分都非零的时候使用。也正因此, the number of nonzero entries. This situation often arises in linear algebra with SparseMat(稀疏矩阵)节省空间,并且有特殊的用途。 sparse matrices, but it also comes up when one wishes to represent data, particularly histograms, in higher-dimensional arrays, since most of the space will be e...