Cropping Invalid Parameter(Solved)

[nathan2195]

Hello, I been having issues trying to get the Crop class to work. The error I am getting is a Invalid parameter exception. I have tried looking it up but I kept going in circles so I was hoping someone here could help me.
The following is the code:

Code: Select all

          // create filter
                    var toCrop = new System.Drawing.Rectangle((int)firstP.X, (int)firstP.Y, (int)(firstP.X-secondP.X), (int)(firstP.Y - secondP.Y));
                    var imgSize = new System.Drawing.Rectangle(0, 0, toRead.Width, toRead.Height);
                    Crop filter = new Crop(toCrop);
                    // apply the filter
                    System.Drawing.Image clonedImg = new Bitmap(toRead.Width, toRead.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
                    clonedImg = (System.Drawing.Image)toRead.Clone(imgSize, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
                    var bmp8bpp = Grayscale.CommonAlgorithms.BT709.Apply((Bitmap)clonedImg);
                    Bitmap newImage = filter.Apply((Bitmap)bmp8bpp.Clone());

The following is the error detials:

error.PNG (11.95 KiB) Viewed 8978 times

If you need anymore information just ask.

Thanks,
Nathan

[andrew.kirillov]

Hello,

It looks like there is nothing wrong with Crop. The exception suggests it was thrown by Bitmap constructor. So check what parameters you pass to it. Maybe you pass negative image width/height, for example.

[nathan2195]

Hello

Thanks for the help. It turns out that I had the first and second coordinates swapped resulting in a negative height and width. I works now that I swapped them.

Nathan