使用openCv凸度缺陷进行手指跟踪/计数

问题描述

大家好，只是一个简单的问题.我一直在使用OpenCv和ConvexHull和ConvexityDefects方法来研究基本的手/手指跟踪代码.基本上，我能够创建手的轮廓.我现在需要能够计算手指的数量.我不知道凸包的起点和终点只是指尖，但我不确定如何计算它们，以及如何通过绘制圆或它们或其他东西来突出显示它们.我有点用我的代码来执行类似 http://www.youtube.com/watch?v=mGpTE1RkEvQ [< ^ ]

到目前为止，这是我的代码的一部分:

Hi all, Just a quick question. I have been working on a basic hand/ finger tracking code using OpenCv and the ConvexHull and ConvexityDefects method. Basically i am able to create a contour of the hand. I now need to be able to count the number of fingers. I no that the start and the end points of the Convex Hull are the finger tips but i am unsure how to count them and also how to highlight them by drawing circles or them or something. I kinda what my code to preform something like this http://www.youtube.com/watch?v=mGpTE1RkEvQ[^]

This is a sample part of my code so far:

cvFindContours( hsv_mask, storage, &contours, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0) );

CvSeq* contours2 = NULL;

CvRect rect = cvBoundingRect( contours2, 0 );

cvRectangle( bitImage, cvPoint(rect.x, rect.y + rect.height), cvPoint(rect.x + rect.width, rect.y), CV_RGB(200, 0, 200), 1, 8, 0 );

CvSeq* hull = cvConvexHull2( contours2, 0, CV_CLOCKWISE, 0 );

CvSeq* defect = cvConvexityDefects( contours2, hull, dftStorage );

CvBox2D box = cvMinAreaRect2( contours2, minStorage );

cvDrawContours( bg, contours2,  CV_RGB( 0, 200, 0), CV_RGB( 0, 100, 0), 1, 1, 8, cvPoint(0,0));

我已经玩过它了，现在可以使用此代码绘制指尖

I have played around with it and I can now draw the fingertip points using this code

for(;defect;defect = defect->h_next) 
{ 
        int nomdef = defect->total;
        if(nomdef == 0)  
	continue; 
	defectArray = (CvConvexityDefect*)malloc(sizeof(CvConvexityDefect)*nomdef);
				
	cvCvtSeqToArray (defect, defectArray, CV_WHOLE_SEQ);
	for(i=0; i<nomdef;>
	{ 
		cvCircle( bg, *(defectArray[i].end), 5, CV_RGB(255,0,0), -1, 8,0);  
		cvCircle( bg, *(defectArray[i].start), 5, CV_RGB(0,0,255), -1, 8,0); 
		cvCircle( bg, *(defectArray[i].depth_point), 5, CV_RGB(0,255,255), -1, 8,0); 
					
	}

	j++;
	free(defectArray);
	}

但是，我仍然收到很多误报.另外，如果有人可以建议任何方法来数手指，那将是非常棒的

任何帮助将不胜感激
谢谢

However i am still getting a lot of false positives. Also if any one could suggest any methods to now count the fingers that would be wonderful

Any help would be very much appreciated
Thanks

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