Patent Document ID: 9785850
Application ID: 14794407

Base Claim:
1. A method of communicating adjustments for relative positioning of a handheld electronic device with a camera, and a document, the method comprising: continuously receiving, at a processor of the handheld electronic device, a plurality of images of characters on the document; dynamically detecting edges of the characters while continuously receiving the images; thickening the edges of the characters; thresholding the edges of the characters; determining a contour of the characters; displaying, using a display of the handheld camera, the edges of the characters; determining an average font height of the characters using the edges of the characters; and determining relative positioning information about positioning of the handheld electronic device relative to the document.

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Claim 14:
14. The method of claim 1 , wherein thresholding includes using an assumption of a foreground and background in the images.