I'm going to make a device which will take a picture from a paper which contains a line of English characters and then process the picture with OCR to get some information in micro-controller. My idea is to make a dark enclosure consist of a an image sensor inside it and a glass on top like a scanner but very simple. I have done it before with a generic camera (genius facecam x1000) and lighting with some led arrays and then connected to PC.
Now i need to make it an industrial product for special uses. I need my device to be as simple and compact as possible and I need to omit extra costs from this design. as i don't have any experience in optic i have some questions:
- Is a B/W IR CMOS suitable to do such a design?
- If i use some of these image sensor modules like this link, are the infrared LEDs on the board enough to make a qualified picture to be processed by OCR?
- If I am totally going in wrong way, what is the best choice that will do my job with lowest price and is industrial? what kind of lighting is needed?
- If I use an image CMOS sensor, is any lens or special prism needed?
I just need a normal quality image of the paper and the ease of communicating with the sensor is an important factor to me.