unsigned char * 转Mat
unsinged char * data =img.data;
Mat mat =(h,w,cv_8UC3,data,0);
void * 转Qimage
uchar * bit =(uchar*)pRknnInputData;
QImage image = QImage(bit, 2048,1536, QImage::Format_RGB888);
qimage转Mat文章来源：https://www.toymoban.com/news/detail-776785.html
QImage image =QImage (MODEL_INPUT_WIDTH_SIZE,MODEL_INPUT_HEIGHT_SIZE,QImage::Format_RGB32);
Mat mat = Mat(image.height(), image.width(), CV_8UC4, image.bits(), image.bytesPerLine());
Mat转Qimage文章来源地址https://www.toymoban.com/news/detail-776785.html
cv::Mat image_bgr = cv::imread(“example.jpg”);
cv::Mat image_aligned;
cv::copyMakeBorder(image_bgr, image_aligned, 0, 0, 0, 0, cv::BORDER_DEFAULT);
QImage qimage(image_aligned.data, image_aligned.cols, image_rgb.rows, QImage::Format_BGR888);
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