Patent ID: 8200043
Filing Date: 2012-06-12
Classification: G06K

Abstract:
1. A method of detecting simple page orientation based on a limited version of character recognition comprising: binarizing a page including a plurality of alphanumeric characters having a first orientation; extracting connected components; determining a second orientation where said second orientation is based on a 90° turn, clockwise or counter clockwise, or no turn from said first orientation, where said second orientation results in a 180° variance from a proper orientation or a proper orientation; implementing a limited version of optical character recognition for an analysis of a character “i”, wherein said analysis comprises counting a number of appearances of said character “i”; differentiating said count by orientation when the number of connected components is above a predetermined threshold and concluding that the orientation with the highest count is the “i” character and the orientation with the lowest count is the “!” character; and determining if said second orientation is upside down based, at least in part, on said analysis.