Patent ID: 8013916
Filing Date: 2011-09-06
Classification: H04N

Abstract:
1. A method for detecting a vertical line artifact in a column of pixels, the method comprising: accessing image data captured from a single digital camera, the image data including multiple columns of pixels with each column of pixels having data for multiple, different color channels; identifying a non-defective column of pixels included in the image data captured from the single digital camera; determining a true mean and a true standard deviation for the non-defective column of pixels included in the image data captured from the single digital camera; determining a mean and a column number for other columns of pixels that are included in the multiple columns of pixels and that are different from the identified non-defective column of pixels; computing, for each of the other columns of pixels, a score based on the mean and column number determined for the other columns of pixels and the true mean and true standard deviation determined for the non-defective column of pixels; comparing the computed scores to a threshold value; based on the comparison, determining whether a vertical line artifact having a non-zero suppressed signal exists at each of the other columns of pixels; and conditioned on a determination that a vertical line artifact exists at a defective column of pixels included in the other columns of pixels, identifying a location of the defective column of pixels and storing, in electronic storage, the identified location of the defective column of pixels.