PROWAREtech

.NET: Crop Image to Square using SixLabors.ImageSharp v3.0

It may be necessary to crop an image to a square, such as preparing the image for a convolutional neural network.

See accessing the pixels and color information.

using SixLabors.ImageSharp;
using (var bmp = Image.Load("file.jpg"))
{
	if(bmp.Width != bmp.Height)
	{
		int size = Math.Min(bmp.Width, bmp.Height);

		var cropRectangle = new Rectangle((bmp.Width - size) / 2, (bmp.Height - size) / 2, size, size);

		bmp.Mutate(x => x.Crop(cropRectangle));
	}
	int width = 256;
	int height = 256;
	bmp.Mutate(x => x.Resize(width, height)); // this is optional!!
}

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