Slab Photo Editing and Analysis software

I am looking for a software engineer who can help me with a variety of image processing and analysis tasks.

Key Responsibilities:
- Remove the background from the slab photo
- Convert the photo into a black and white image of the slab
- Calculate the surface area of the slab
- Determine the dimensions of the maximum inscribable rectangle (width and height)
- Identify the dimensions of the rectangle outside the slab (width and height)
- Return the background removed photo of the slab
- Return the photo of the slab with a given custom background
- Provide a DWG file with the image of the slab to scale

The photos are in JPEG format and the slab is typically positioned horizontally in the images. A custom image will need to be added to the edited photo.

Ideal candidates should have:
- Experience with image processing and analysis
- Proficiency in using relevant software
- Ability to deliver high-quality work within a short timeframe.