Patent ID: 7833159

Claim:
An image processing system, comprising: an image data forming unit configured to form image data based on image signals acquired from a target object by using initial image parameters including initial time gain compensation (TGC), initial gain and initial dynamic range (DR) parameters; a log-compression unit configured to log-compress the image data to provide a log-compressed image; a TGC processor configured to vertically segment the log-compressed image into a plurality of image regions parallel to each other and calculate a mean pixel intensity at each depth of each of the image regions to compute a pixel intensity profile, and model the pixel intensity profile in a straight line and automatically adjust the initial TGC parameter based on the modeled pixel intensity profile to apply the adjusted TGC parameter to the log-compressed image; a gain processor configured to calculate a mean brightness of pixels included in the log-compressed image with the adjusted TGC parameter applied and compare the calculated mean brightness with a predetermined brightness to automatically adjust the initial gain parameter to apply the adjusted gain parameter to the log-compressed image; a DR processor configured to automatically adjust the initial DR parameter by using an edge contrast and a background roughness of the log-compressed image with the adjusted TGC parameter and adjusted gain parameter applied; and an image forming unit configured to apply the adjusted TGC parameter, adjusted gain parameter and adjusted DR parameter to the image data.