Patent ID: 9007527
Filing Date: 2015-04-14
Classification: H04N

Abstract:
1. An imaging device comprising: a video signal input unit which inputs a video signal; and an image processing unit to which the video signal is inputted and which carries out correction of the video signal and outputs a corrected video signal; wherein the image processing unit wherein the per-area histogram data includes a difference in luminance value from a value indicating the darkest of values that the video signal can have in the per-area histogram data to a histogram start point, and a difference in luminance value from a value indicating the brightest of the values that the video signal can have in the per-area histogram data to a histogram end point, and wherein the image processing unit further includes: a dark-side calculation unit which finds a width from the value indicating the darkest of the values that the video signal can have in the per-area histogram data to the histogram start point; a bright-side calculation unit which finds a width from the value indicating the brightest of the values that the video signal can have in the per-area histogram data to the histogram end point; a dark/bright-side calculation result combining unit which carries out combination based on calculation results in the dark-side calculation unit and the bright-side calculation unit; a correction coefficient calculation unit which carries out calculation of a correction coefficient in the case where the video signal is to be corrected, based on an output from the dark/bright-side calculation result combining unit; and an image correction processing unit which corrects the video signal based on the correction coefficient.