计算cvInRangeS中的最小值和最大值 [英] Calculate the minimum and maximum in cvInRangeS

问题描述

 cvCvtColor(frame, hsv_frame, CV_BGR2HSV);
 cvInRangeS(hsv_frame, hsv_min, hsv_max, thresholded);

我尝试跟随蓝球.要确定最大和最小值，我打开用相机拍摄的照片，打开它的MS画图，然后以H的(180/240)结果翻倍 和(255/240)S和L的结果 然后我获取下一个值:

I try to follow blue ball. To determine the maximum and minimum I open a picture I took with the camera, open it MS paint and doubles at (180/240) result out of me in H And (255/240) the result of S and L then i recive the next values:

108 113 115 112 105 H
145 40  107 129 143 S
97  129 96  102 124 L

所以我选择了下一个值:

So I chose the next values:

CvScalar hsv_min = cvScalar( 105, 40, 96 );
CvScalar hsv_max = cvScalar( 115, 140, 130);

但是当我尝试跟随它时，几乎看不到他 我计算错了吗?还是我可以做些什么来改善结果?

But when I try to follow it hardly ever see him Am I wrong calculation? or what can i do to improve the result?

推荐答案

首先为什么将图像转换为HSV，然后再讨论HSL?如果我没记错的话，它们是不同的色彩空间.

First of all why do you convert your image to HSV and then talk about HSL? If I'm not mistaken they are different color spaces.

要使用HSV颜色空间确定蓝色，请使用以下范围:

To determinate blue color using HSV color space use this range:

Min (H/S/V):  90,  50,  50
Max (H/S/V): 130, 255, 255

此在线转换器也应为您提供帮助.

请不要忘记，使用CV_BGR2HSV代码将图像转换为HSV后的Hue值在 [0..180] 范围内，而使用CV_BGR2HSV_FULL将为您提供范围 [0..360] .

And don't forget that Hue value after converting image to HSV using CV_BGR2HSV code is in range [0..180], while using CV_BGR2HSV_FULL will give you range [0..360].

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