Area of interest and Efficiency- iOS

Will the size of Area of Interest effect the efficiency of text recognition.???

I am using full screen camera and not getting expected results..... 

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    Lilya Chesnova

    The size of the area of interest affects performance and the speed of convergence of the result. The best result is achieved when the area of interest does not touch the boundaries of the frame but has a margin of at least half the size of a typical printed character.


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