C++ 调整图像大小 OpenCV
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Resize image OpenCV
提问by Clip
If I have an image called inImgand an image named outImghow can I resize outImgso that it is 75% the size of inImg?
如果我有一个名为的图像inImg和一个名为的图像，outImg我如何调整大小outImg使其为 75% 的大小inImg？
回答by Yeraze
If you want 75% along each axis, you should be able to use cv::resizeto do:
如果你想沿着每个轴 75%，你应该能够使用cv::resize来做：
cv::resize(inImg, outImg, cv::Size(), 0.75, 0.75);
回答by Pervez Alam
Use cv::resize. Following code will resize outImg to 0.75 times the dimensions of inImg with CV_INTER_LINEAR type of interpolation.
使用cv::resize. 以下代码将使用 CV_INTER_LINEAR 类型的插值将 outImg 的大小调整为 inImg 尺寸的 0.75 倍。
cv::resize(outImg, outImg, cv::Size(inImg.cols * 0.75,inImg.rows * 0.75), 0, 0, CV_INTER_LINEAR);
4th and 5th argument should be left 0 or not assigned to take 3rd argument as size otherwise it will scale according to 4th and 5th arguments. (OpenCV3 resize)
第 4 个和第 5 个参数应保留为 0 或不分配以将第 3 个参数作为大小，否则它将根据第 4 个和第 5 个参数进行缩放。（OpenCV3 调整大小）
