将直方图分为两个区域

本文介绍了将直方图分为两个区域的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想将直方图分为两个区域(通过获取直方图图像的平均强度值).

I want to divide the histogram into two regions (by taking the avg intensity value of histogram image).

hR = imhist(redChannel); minRed = min(redChannel(:)); maxRed = max(redChannel(:)); avgRed = (minRed+maxRed)/2; hlowR = hR(1:avgRed); hhighR = hR(avgRed:256);

hlowR提供值，但hhighR为空.我不知道怎么了请帮忙.谢谢

hlowR is giving the values but hhighR is empty. I don't know what's wrong. Please help. Thanks

推荐答案

hR = imhist(redChannel); % minRed = min(redChannel(:)); % maxRed = max(redChannel(:)); % avgRed = (minRed+maxRed)/2; avgRed = mean(redChannel(:)); % get mean directly hlowR = hR(hR<=avgRed); % Logical index to find all values below the average hhighR = hR(hR>=avgRed);% Logical index to find all values above the average

您直接将avgRed用作索引，同时应使用逻辑索引.

You are using avgRed directly as index, whilst you should check whether a value of hR is above or below it, using logical indexing.