如何显示带有窗口大小不同的输出图像？ [英] How can I display output image with difference size of window?

问题描述

我想使用OpenCV函数在窗口上显示图像。但是，我试图显示图像的任何时候将适合显示器的大小（如示例中所示）。

I would like to display an image on window using OpenCV function. However, anytime that I tried to display image will be fit to the size of display (as show in the example).

如果我想显示一个有差异的图像窗口大小（例如，窗口大小为1280x960像素，图像为600x600像素，偏移坐标为100x100像素）。

If I would like to display an image with difference size of window (for example. window size 1280x960px, and an image is 600x600px at offset coordinate 100x100px) How can I make them?

对不起，我是OpenCV的初学者对不起，我的英语不好。

Sorry that I am beginner of OpenCV and Sorry for my poor English.

感谢您的帮助。 ：）

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推荐答案

我只是做一个更大的空白图像，并将实际图像放在其中：

I'd just make a bigger empty image and place the actual image in there using:

IplImage* smallerImage = cvLoadImage("image.jpg",1)
IplImage* biggerImage = cvCreateImage(cvSize(1280,960),8,3);

cvSetImageROI(biggerImage,cvRect(100,100,800,600);
cvResize(smallerImage,biggerImage);
cvResetImageROI(biggerImage);
cvShowImage("result",biggerImage);

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