C# 使用OpenCvSharp绘制矩形
我正试图画一个视频中检测到的人脸,但我似乎很难让它工作C# 使用OpenCvSharp绘制矩形,c#,.net,opencv,facial-identification,C#,.net,Opencv,Facial Identification,我正试图画一个视频中检测到的人脸,但我似乎很难让它工作 var haarcascade = new CascadeClassifier("C:/Users/NotMyName/Desktop/haar/haarcascade_frontalface_alt2.xml"); using (Window window = new Window("capture")) using (Mat image = new Mat())//Image Buffer {
var haarcascade = new CascadeClassifier("C:/Users/NotMyName/Desktop/haar/haarcascade_frontalface_alt2.xml");
using (Window window = new Window("capture"))
using (Mat image = new Mat())//Image Buffer
{
while (true)
{
Video.Read(image);
var gray = image.CvtColor(ColorConversionCodes.RGB2GRAY);
OpenCvSharp.Rect[] faces = haarcascade.DetectMultiScale(gray, 1.08, 2, HaarDetectionTypes.ScaleImage, new OpenCvSharp.Size(30,30));
foreach (Rect i in faces)
{
Cv2.Rectangle(image, (faces[i].BottomRight.X, faces[i].BottomRight.Y), (faces[i].TopLeft.X, faces[i].TopLeft.Y), 255, 1);
}
然而,编译器只是在抛出错误。将faces数组直接传递给函数也不起作用。错误消息为(德语翻译)
错误CS0029类型“OpenCvSharp.Rect”无法转换为“int”
我认为正确的方法应该是:
...
foreach (Rect i in faces)
{
Cv2.Rectangle(image, new Point(i.BottomRight.X, i.BottomRight.Y), new Point(i.TopLeft.X, i.TopLeft.Y), 255, 1);
}
....
foreach引用中的局部变量i
指向currentRect
Cv2.Rectangle
方法接受OpenCvSharp.Point
您可以直接使用Rect
变量:
foreach (Rect r in faces)
Cv2.Rectangle(image, (r.BottomRight.X, r.BottomRight.Y), (r.TopLeft.X, r.TopLeft.Y), 255, 1);
或者使用int
,如下所示:
foreach (int i = 0; i < faces.Length; i++)
Cv2.Rectangle(image, (faces[i].BottomRight.X, faces[i].BottomRight.Y), (faces[i].TopLeft.X, faces[i].TopLeft.Y), 255, 1);
foreach(inti=0;i
哪一行触发了该错误?正是这一行,但是,正如您所指出的,它要求我将其指定为OpenCvSharp.Point。谢谢你的帮助:)