Patent ID: 8885235
Filing Date: 2014-11-11
Classification: H04N

Abstract:
1. An apparatus comprising: a media path; a scanner positioned on a first side of said media path; a calibration surface position on a second side of said media path across from said scanner, said first side of said media path being opposite said second side of said media path; and a processor operatively connected to said scanner, said scanner including a lens causing a distortion of items scanned, said processor performing a calibration process of said scanner using dedicated calibration hardware, by scanning said calibration surface using said scanner, during said calibration process, said processor and dedicated hardware performing a compensation process to remove said distortion from signals output by said scanner when performing said scanning to identify at least one surface irregularity on said calibration surface, after performing said compensation process, said processor adjusting said calibration hardware to apply correction for pixels affected by said surface irregularity, said correction comprising using settings of adjacent pixels as settings for said pixels affected by said surface irregularity, said adjacent pixels not being affected by said surface irregularity, and after adjusting said calibration hardware, said processor and hardware finalizing said calibration process and storing scanner settings.