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This article shows you how to use OpenCV in C++ to achieve image remapping, the content is concise and easy to understand, absolutely can make your eyes bright, through the detailed introduction of this article hope you can get something.

Image remapping

The meaning of image remapping is simply to map each pixel in the input image to the corresponding position of another image according to certain rules to form a new image.

In order to complete the mapping process, it is necessary to obtain some non-integer pixel coordinates, because the pixel coordinates of the source image and the target image are not one-to-one corresponding.

To put it simply, change the position of the picture (left, right, top, bottom, upside down)

Related API introduction cv::remap

Add practical information first.

The following DEMO video demonstrates the effect

Code demonstration

Create a new project opencv-0019, configure properties (VS2017 configure OpenCV common properties), and then write # include and main methods in the source file

Remapping

We set up several ways when remapping, horizontal reversal, vertical reversal, redirect plus horizontal reversal, and double reduction.

We add a method to deal with different types

Then add a loop detection to the main program and change it every second.

The above content is how to use OpenCV to achieve image remapping in C++. Have you learned the knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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