Patent ID: 8300974
Filing Date: 2012-10-30
Classification: G06T

Abstract:
1. An image processing device for interpolating a tone in image data, the image processing device comprising: an input unit that inputs the image data; a tone transformation unit that performs a tone transformation of the inputted image data; a threshold-value control unit that sets a threshold value corresponding to a tone; a smoothing filter unit that calculates a tone differences between a given pixel and a pixels near said given pixel in the image data that has undergone tone transformation, and performs a filtering process in such a way that, wherein the threshold-value control unit sets the threshold value in such a way that a threshold value for a tone in an area where a tone difference in the image data after the tone transformation becomes larger than that in the image data before the tone transformation is at least as large as a threshold value for a tone in an area where the tone difference in the image data after the tone transformation becomes smaller than that in the image data before the tone transformation.