OpenCV C# - Detecting simple object in static image

Question

I have no experience with images. I have to detect simple object in static image. For example I have image like:

I want to detect edges and remove background. Just to compare them. Something like this.

Do u have any solutions of this problem? Images have often white backgrounds.

I've just thought about detect edges, and take everything what they contains.

Answer 1

To segment out the shoe-

• Anadptive Threshold to remove the smooth changing background.
• Sobelx, which removes the apparent background line, which i assume is common for images of this setup.
• dilate, closing operation to separate out the shoe.
• Find contours, bounding box etc as per your choice.

Do an additional threshold if you want to remove the shadow at the bottom.