OpencvSharp 使用透视变换。
static void Main(string[] args)
{
// 输入需要转变的图的四个角的坐标（可以通过代码获得）
var srcPoints = new Point2f[] {
new Point2f(69, 110),
new Point2f(81, 857),
new Point2f(1042, 786),
new Point2f(1038, 147),
};
// 需要转换的图指定转换后四个角的坐标
var dstPoints = new Point2f[] {
new Point2f(0, 0),
new Point2f(0, 480),
new Point2f(640, 480),
new Point2f(640, 0),
};
using (var matrix = Cv2.GetPerspectiveTransform(srcPoints, dstPoints))
using (var src = new Mat("Images/1.jpg"))
using (var dst = new Mat(new Size(640, 480), MatType.CV_8UC3))
{
// 透视变换
Cv2.WarpPerspective(src, dst, matrix, dst.Size());
using (new Window("result", dst))
{
Cv2.WaitKey();
}
}
}
