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PORemove image background(ID Card) and prepared it for OCR
 

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    <p>I want to integrate OCR in an iOS application. I have found some helpful tutorials, specially <a href="http://tinsuke.wordpress.com/2011/11/01/how-to-compile-and-use-tesseract-3-01-on-ios-sdk-5/" rel="nofollow noreferrer">This Article: How To: Compile and Use Tesseract (3.01) on iOS (SDK 5)</a>, helped me a lot. Now I can read plain text from any image which has a clear background. But I want to read information from an ID card which doesn't have clear background at all!</p> <p>I have also found some answers regarding removing background in stackoverflow, for example: <a href="https://stackoverflow.com/questions/9398374/prepare-complex-image-for-ocr">Prepare complex image for OCR</a>, <a href="https://stackoverflow.com/questions/14224995/remove-background-color-or-texture-before-ocr-processing">Remove Background Color or Texture Before OCR Processing</a> and <a href="https://stackoverflow.com/questions/10255013/how-to-use-opencv-to-remove-non-text-areas-from-a-business-card">How to use OpenCV to remove non text areas from a business card?</a></p> <p>But those solutions are not for iOS. I understand the steps, but I need an iOS example and if it is using Core Image, than it would be better for me.</p> <p>I have no problem in OCR end, but my problem is to remove the background.</p> <p>Initial Image:</p> <p><img src="https://i.stack.imgur.com/6IJoo.jpg" alt="Need to remove the background"></p> <p>After removing, the image should look like this:</p> <p><img src="https://i.stack.imgur.com/FVSTX.png" alt="after removing the background"></p> <p>Can you refer me an iOS example? or Is it possible to refer me an iOS example to remove all the color without Black color?</p>
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    1. COTo clarify, so you have the algorithm down that you want to use, but are looking for an implementation on iOS? If this is the case, I suggest spending time learning objective C. It's possible that no one has done before exactly what you want to do on iOS.
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    2. COyes, I do believe that also. And I am trying to implement this. After completing my task, I will share it.
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    3. COYou can install OpenCV on iOS so any background removal example in OpenCV can be done on iOS (see [Installation in iOS](http://docs.opencv.org/doc/tutorials/introduction/ios_install/ios_install.html), [OpenCV iOS tutorials](http://docs.opencv.org/doc/tutorials/ios/table_of_content_ios/table_of_content_ios.html) and [iPhone and OpenCV](http://stackoverflow.com/questions/348040/iphone-and-opencv)).
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