Question

I’m using the Emgu library for integrating the open CV webcam features in C#.

I use this code for choosing the capture device and setting its size:

camera = new Capture(0);
camera.SetCaptureProperty(CAP_PROP.CV_CAP_PROP_FRAME_WIDTH, videoSettings.width);
camera.SetCaptureProperty(CAP_PROP.CV_CAP_PROP_FRAME_HEIGHT, videoSettings.height);

Then I display it in an imageBox like this: imageBox1.Image = camera.QueryFrame();

Then to capture a snapshot of the current frame I use this code:

Image<Bgr, byte> snapshot = camera.QueryFrame();
snapshot.Save("snapshot.jpg");

Though I would want to be able to save the snapshot at a higher resolution than the preview window.

But the problem is that as far as I know I can’t create a new “Capture” object using the same webcamera. So I’m wondering if it is maybe possible to set the camera.setCaptureProperty height and width to let’s say 1028×720 but then in some way crop it for displaying it in the imageBox with the resolution of 514×360?

Or is there any other way to do this?

Answer 1

I solved this by using

imageBox1.SizeMode = PictureBoxSizeMode.StretchImage;