title: iOS Tesseract OCR Image Preperation
body: <p>I would like to implement an OCR application that would recognize text from Photos.</p>
  
  <p>I succeeded in Compiling and Integration the Tesseract Engine in iOS, I succeeded in getting reasonable detection when photographing clear documents (or a photoshot of this text from the screen) but for other text such as signposts, shop signs, colour background, the detection failed.</p>
  
  <p>The Question is What kind of image processing preparations are necessary to get better recognition. For example, I expect that  we need to transform the images into grayscale /B&amp;W as well as fixing contrast etc.</p>
  
  <p>How can this be done in iOS, Is there a package for this?</p>