cvMat resize

cvMat是OpenCV版本2中使用的矩阵数据结构。resize()函数可以用于改变cvMat的尺寸。将矩阵的行数和列数作为参数传递给resize()函数，可以在不改变矩阵数据的情况下改变矩阵的大小。引用中提到的pop_back()和resize()方法与cvMat无关，因此不适用于cvMat对象。如果cvMat的数量为0或cvMat的数据指针为NULL，则可以使用Mat::total()方法和Mat::data成员来检查。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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