This is modification project and candidate must know opencv library well and .mm file.
If you don't know opencv library, do not bid on this project.
I prefer to hire chinese app developer and will discuss details with him.
It is the app that recognize the image and calculate the size of element.
Budget is between $250~$350.
24 freelancers are bidding on average $613 for this job
having 7+ yrs of experiencing in development and designing Relevant Skills and Experience C++ Programming, iPhone, Mobile App Development, Objective C, Swift Proposed Milestones $555 USD - Cost