Patent ID: 8873864

Claim:
A system for determining a content boundary in an image, said system comprising: an image receiver for receiving an image; a skew-information receiver for receiving a skew angle associated with said image; an image preconditioner for normalizing said image; an edge detector for detecting image-content edges in said normalized image; a projection-histogram generator for generating a first projection histogram of said detected image-content edges in a direction associated with said skew angle, wherein said projection-histogram generator: determines a point vector associated with a possible boundary location; determines an input rotation vector associated with said skew angle; computes a projection value using said point vector and said input rotation vector; and accumulates said projection value in said first projection histogram; a boundary estimator for determining a first content boundary from said first projection-histogram and said skew angle; and wherein said system is embodied in at least one system type selected from the group consisting of a hardware system, a firmware system and a non-transitory computer-readable medium.