I applaud your effort, and actually the fact that you've gotten as far with it as you have. I'm impressed.

But your strategy is flawed. Point of Sale has to go as smoothly as possible. Any slowdown at POS will cost you sales. There is no way that you can take a controlled picture of sufficient quality to guarantee image recognition accuracy faster than you could jot down a six digit number, and even worse, your salespeople or clerks aren't going to be even half as careful as you. This is especially true when they've got a line of frustrated customers at the counter, impatient over the notion that everything they buy has to be photographed carefully first. POS slow-downs are one of the biggest No No's in the retail environment.

If barcoding is too expensive to implement, at least just generate sku's. Printing sku labels isn't terribly difficult, and that will make inventory tracking simple, efficient, and in keeping with what clients and clerks are accustomed to.

That doesn't mean the project doesn't interest me. It really does. But the purpose for which you're applying the project is not ideal, imho.