Systems and methods for mobile image capture and processing

摘要

In various embodiments, methods, systems, and computer program products for processing digital images captured by a mobile device are disclosed. Myriad features enable and/or facilitate processing of such digital images using a mobile device that would otherwise be technically impossible or impractical, and furthermore address unique challenges presented by images captured using a camera rather than a traditional flat-bed scanner, paper-feed scanner or multifunction peripheral.

主权项

1. A method for determining whether illumination problems exist in a digital representation of a document, the method comprising:
dividing, using a processor, a tetragon comprising a detected digital representation of a document within the digital image into a plurality of sections, each section comprising a plurality of pixels; determining a distribution of brightness values of each section; determining a brightness value range of each section; determining a variability of brightness values of each section; determining whether each section is oversaturated; determining whether each section is undersaturated; determining a number of oversaturated sections; determining a number of undersaturated sections; determining that the digital image is oversaturated upon determining that a ratio of the number of oversaturated sections to a total number of sections exceeds an oversaturation threshold; determining that the digital image is undersaturated upon determining that a ratio of the number of undersaturated sections to the total number of sections exceeds an undersaturation threshold; and determining that the illumination problem exists in the digital image upon determining that the digital image is either undersaturated or oversaturated.