我想在下面的图像中检测并获取一个矩形数组,每个矩形一个.我如何在c#中执行此操作？
基本上我试图扫描屏幕上拍摄的图像并解析窗口数组.
Rect是某种形式的(xloc,yloc,xsize,ysize)
返回数组：rectangles = ParseRects(image);
解决方法
你最好的选择是使用
AForge.Net library.
以下代码派生自ShapeChecker类的文档,您可能需要查看文档以进一步了解您自己.
static void Main(string[] args)
{
// Open your image
string path = "test.png";
Bitmap image = (Bitmap)Bitmap.FromFile(path);
// locating objects
BlobCounter blobCounter = new BlobCounter();
blobCounter.FilterBlobs = true;
blobCounter.MinHeight = 5;
blobCounter.MinWidth = 5;
blobCounter.ProcessImage(image);
Blob[] blobs = blobCounter.GetObjectsInformation();
// check for rectangles
SimpleShapeChecker shapeChecker = new SimpleShapeChecker();
foreach (var blob in blobs)
{
List<IntPoint> edgePoints = blobCounter.GetBlobsEdgePoints(blob);
List<IntPoint> cornerPoints;
// use the shape checker to extract the corner points
if (shapeChecker.IsQuadrilateral(edgePoints,out cornerPoints))
{
// only do things if the corners form a rectangle
if (shapeChecker.CheckPolygonSubType(cornerPoints) == PolygonSubType.Rectangle)
{
// here i use the graphics class to draw an overlay,but you
// could also just use the cornerPoints list to calculate your
// x,y,width,height values.
List<Point> Points = new List<Point>();
foreach (var point in cornerPoints)
{
Points.Add(new Point(point.X,point.Y));
}
Graphics g = Graphics.FromImage(image);
g.DrawPolygon(new Pen(Color.Red,5.0f),Points.ToArray());
image.Save("result.png");
}
}
}
}
原来的输入：
得到的图像：
