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void Detection(Bitmap img_base)
{
BitmapData bitmapData = img_base.LockBits(new Rectangle(0, 0, img_base.Width, img_base.Height), ImageLockMode.ReadWrite, img_base.PixelFormat);
// Background noir
ColorFiltering colorFilter = new ColorFiltering();
colorFilter.Red = new IntRange(0, 64);
colorFilter.Green = new IntRange(0, 64);
colorFilter.Blue = new IntRange(0, 64);
colorFilter.FillOutsideRange = false;
colorFilter.ApplyInPlace(bitmapData);
// Localiser la feuille
BlobCounter blobcounter = new BlobCounter();
blobcounter.FilterBlobs = true;
blobcounter.MinHeight = 5;
blobcounter.MinWidth = 5;
blobcounter.ProcessImage(bitmapData);
Blob[] blobs = blobcounter.GetObjectsInformation();
img_base.UnlockBits(bitmapData);
// Dessins
SimpleShapeChecker shapeChecker = new SimpleShapeChecker();
Graphics graph = Graphics.FromImage(img_base);
Pen red = new Pen(Color.Red, 5);
for(int i=0; i < blobs.Length; i++)
{
List<IntPoint> edgePoints = blobcounter.GetBlobsEdgePoints(blobs[i]);
List<IntPoint> corners;
if(shapeChecker.IsQuadrilateral(edgePoints, out corners))
{
if(shapeChecker.CheckPolygonSubType(corners) == PolygonSubType.Rectangle)
{
graph.DrawPolygon(red, ToPointsArray(corners));
}
}
}
red.Dispose();
graph.Dispose();
test_2.Source = Bitmap2BitmapImage(img_base);
} |
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