Users mobile devices don't have the space, speed, and power to perform large amounts of computations to do this kind of work. So after many months of research on and off, I've come to the conclusion that if you're going to be comparing against 1000's of images or more (in my case 1 million+), you'll need to do the image comparison off of the device. For my project, I have nearly 4 million images I need to match against. At the time of me writing this, the 'up to 100,000' image service is about $12,000/year. They have a great system (I've tested it for my own use and it's fantastic) BUT it's EXTREMELY expensive for me, which is why I am not using it. Then follow below instructions to scan paper documents to text documents or convert images to text on iPhone.I've looked into Moodstocks, who seems to have perfected an image recognition system with a pay-per-month service. Convert PDF and pictures to text on iPhone Sounds interesting? Check out details below. For example, if you scanned a business card using your mobile phone, you can use the OCR utility to extract phone numbers, email address, and other information from the scanned business card.

Today, we will introduce another very very useful feature of this scanner app, the OCR (Optical Character Reader) which extract text from scanner PDF and image files. See details from this guide to scan paper documents to PDF using an iPhone. Or even easier, you can simply point and shoot, then the files will be saved as PDF doc directly without any conversion process. Check out this tutorial to convert photos, pictures to PDF on iPhone. All these can be done very easily on iPhone using a scanner app. Launch the Camera app on iPhone, take a picture of any thing you like, business cards, magazines, documents, books, receipts, whiteboards, paper notes, articles, then convert them into PDF and send to anyone you like to share with.

You have a scanner when you have your iPhone.

Ipad text recognition code