我有2个轮廓A和B,我想检查它们是否相交.A和B都是cv :: Point类型的向量,并且具有不同的大小
为了检查交集,我试图做一个bitwise_and.这是一个例外,因为输入的大小不同.我该如何解决 ?
编辑:
附图应该能够更好地了解这个问题.汽车由蓝色轮廓跟踪,障碍物由粉红色轮廓跟踪.我需要检查交叉点.
我有以下代码执行背景减法,然后使用findContours绘制前景对象周围的边界.
// frame - Input frame from a camera.
// output - Output frame to be displayed.
void process(cv:: Mat &frame, cv:: Mat &output) {
cv::cvtColor(frame, gray, CV_BGR2GRAY);
// initialize background to 1st frame
if (background.empty())
gray.convertTo(background, CV_32F);
// convert background to 8U
background.convertTo(backImage,CV_8U);
// compute difference between current image and background
cv::absdiff(backImage,gray,foreground);
// apply threshold to foreground image
cv::threshold(foreground,output,threshold,255,cv::THRESH_BINARY_INV);
// accumulate background
cv::accumulateWeighted(gray, background, learningRate, output);
// Find regions of interest
std::vector<std::vector<cv::Point> > v; // Detected foreground points
cv::findContours(output,v,CV_RETR_LIST,CV_CHAIN_APPROX_NONE); …
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