Patent ID: 9549130
Date: 2017-01-17
CPC Classifications: G06T,H04N

Claim:
1. A method for adjusting an image derived from a two-dimensional image sensor of X pixels in one dimension and Y pixels in the other dimension, the method comprising: a) acquiring at least one X b) selecting a kernel of image data from the frame starting at a pixel P c) computing at least one of an average or a median of the pixels for each column or row of the kernel; d) computing at least one of an average or a median of the column averages or medians of all the columns in the kernel except the center column of the kernel; e) computing a pixel offset value, O f) moving the kernel by at least one pixel in at least one direction and repeating steps c)-e) for each kernel location, generating a current offset value O g) updating O h) repeating steps f) and g) until at least one of the whole frame or a region of interest of the image frame has been stepped through and analyzed; and i) subtracting the final offset mask values from the intensity values for the entire frame to adjust for row or column variations from the image data.