编程语言:python3 opencv版本:3.4.6+contrib 一般图像文件格式使用的是unsigned 8bits,对应的数据类型有:CV_8UC1、CV_8UC2,CV_8UC3 其中,CV_8UC3表示3通道8位的unsigned char型 float是32位,对应的CvMat数据结构类型是:CV_32FC1,CV_32FC2,CV_32FC3 double是64位,对应的CvMat数据结构类型是:CV_64FC1,...
cv::cuda::GpuMat m(cv::Size(1280, 1024), CV_32FC1); cv::cuda::Stream stream; m.convertTo(m, CV_8UC1, 1, 0, stream); cv::cuda::threshold(m, m, 128, 255, cv::THRESH_BINARY, stream); OpenCV(3.4.3) Error: Gpu API call (an illegal memory access was encountered) in cv::...
输出结果如下: beforeconvertTo(), img_guided typeis16//CV8UC3afterconvertTo(), img_guided typeis21//CV32FC3, 而不是CV32FC1 想要改变Mat的通道数,可以利用cvtColor()函数 imshow()也可以显示float类型的Mat矩阵,但是该矩阵的数据范围应在(0.0 ～1.0),像素值>1.0的像素点会显示为白色。 opencv类型映...
一、数据类型转换 1.一般图像文件格式使用的是unsigned 8bits,对应的数据类型有:CV_8UC1、CV_8UC2,CV_8UC3 其中,CV_8UC3表示3通道8位的unsigned char型 float是32位,对应的CvMat数据结构类型是:CV_32FC1,CV_32FC2,CV_32FC3 double是64位,对应的CvMat数据结构类型是:CV_64FC1,CV_64FC...OpenCV总结...
代码: cv::Mat samples; cv::Mat tdata; samples.convertTo(tdata, CV_32FC1); convertTo函数的声明,在core.hpp中: //! converts matrix to another datatype with optional scalng. See cvConvertScale.voidconvertTo( OutputArray m,intrtype,doublealpha=1,doublebeta=0)const; ...
cv::Mat tdata; samples.convertTo(tdata, CV_32FC1); 1. 2. 3. convertTo函数的声明,在core.hpp中: //! converts matrix to another datatype with optional scalng. See cvConvertScale. void convertTo( OutputArray m, int rtype, double alpha=1, double beta=0 ) const; ...
Latest commit Cannot retrieve latest commit at this time. History History
image.convertTo(image32S,CvType.CV_32SC1); Imgproc.findContours(image32S,contours,newMat(),Imgproc.RETR_FLOODFILL,Imgproc.CHAIN_APPROX_SIMPLE); // Draw all the contours such that they are filled in. MatcontourImg=newMat(image32S.size(),image32S.type()); ...
其中参数alpha可以让数据放缩到指定的范围内，比如从字节到浮点数类型 CV_8U 转换为CV_32Falpha=1...
NKwDOdO3/Lyt/jiInrqTZIp3QYPJnFfun72+AX83flEEhxnKNHcngFd+ZMFh8O8ify9PvME+3sluPP/XgdIwvwb1SCFoBjVigCbfLS9eZcv/Ez5WhopBgUjykf1JsWgFKwqop7p66CpWg19EG3gDXUpCtWeCdP2qS9/HwgdWIfJ501LG1VzE3Rk1SQDY3VRT0zoyGJvAR21SCe/M5LaL7XpUDudb8rE6c528VI+y3Lx+f4wlDQtqf68QzW1eyGb9reGbiia+1TBTg8dS...