Blazor ID Auto-Crop Function

I need a self-contained C# routine for my existing Blazor Server app that takes an uploaded photo—whether shot on a phone or chosen from disk—detects the driver’s licence, passport page or other ID card inside it, crops away the background, and returns the document perfectly oriented... (Budget: $250 - $750 USD, Jobs: .NET, Blazor, C Programming, C# Programming, C++ Programming, Computer Vision, Image Processing, OpenCV)