与像素处理的轮廓（OpenCV的）？ [英] Dealing with pixels in contours (OpenCV)?

问题描述

我已检索到的图像的轮廓，并希望具体工作轮廓中的像素。我需要找到轮廓中的像素值的总和（未区域）。 OpenCV的只支持矩形状的投资回报率，所以我不知道如何做到这一点。 cvSum也只接受完整的图像，没有口罩的选择，所以我有点失去了怎么办。有没有人对如何找到一个特定的轮廓像素值的总和有什么建议？

I have retrieved a contour from an image and want to specifically work on the pixels in the contour. I need to find the sum (not area) of the pixel values in the contour. OpenCV only supports rectangle shaped ROI, so I have no idea how to do this. cvSum also only accepts complete images and doesn't have a mask option, so I am a bit lost on how to proceed. Does anyone have any suggestions on how to find the sum of the values of pixels in a specific contour?

推荐答案

首先让所有的轮廓。使用此信息来创建一个二进制图像的白色部分是轮廓的轮廓和面积。执行AND运算对两幅图像。结果将是在黑色背景上的轮廓和面积。然后，只需总结所有的像素在这一形象。

First get all of your contours. Use this information to create a binary image with the white parts being the contour's outline and area. Perform an AND operation on the two images. The result will be the contours and area on a black background. Then just sum all of the pixels in this image.

这篇关于与像素处理的轮廓（OpenCV的）？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！