opencv: 排序

最新推荐文章于 2024-12-02 14:05:17 发布

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最新推荐文章于 2024-12-02 14:05:17 发布 · 1k 阅读

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原文链接：http://www.cnblogs.com/yinwei-space/p/9084366.html

文章标签：

#人工智能 #python

本文介绍了OpenCV库中用于排序的两个函数sort和sortIdx，重点讲解了sortIdx能获取排序后序号的特点。这两个函数支持矩阵的行、列排序。详细用法可参考OpenCV官方文档。

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opencv提供了排序函数： sort和sorIdx , 其中sortIdx可以获取排序后的序号，比较方便；

sortIdx原型：

C++: void sortIdx(InputArray src, OutputArray dst, int flags)

Python: cv2.sortIdx(src, flags[, dst]) → dst

Parameters:
src – Source single-channel array.
dst – Destination integer array of the same size as src .
flags – 
Operation flags that could be a combination of the following values:
CV_SORT_EVERY_ROW Each matrix row is sorted independently.
CV_SORT_EVERY_COLUMN Each matrix column is sorted independently. This flag and the previous one are mutually exclusive.
CV_SORT_ASCENDING Each matrix row is sorted in the ascending order.
CV_SORT_DESCENDING Each matrix row is sorted in the descending order. This flag and the previous one are also mutually exclusive.

sort原型：