Patent Document ID: 8514241
Application ID: 11529401
Patent Status: 1

Claim One:
1. A bit-resolution-extension method performed by a bit-resolution-extension device, the method comprising: normalizing, by the bit-resolution-extension device, upper n-m bit values of adjacent pixels based on an upper n-m bit value of a reference pixel for each pixel of a sample image by differentiating the upper n-m bit value of the reference pixel of the sample image from the upper n-m bit values of the adjacent pixels of the sample image; analyzing a statistical distribution of a lower m bit value of the reference pixel by patterns of a set comprising the normalized adjacent pixels; generating a memory address from normalized adjacent pixel values of the sample image; saving a representative value of the lower m bits by patterns to the memory address generated as a result of the analyzing; normalizing adjacent pixel values based on a reference pixel value for each pixel of an input image by differentiating the reference pixel value of the input image from the adjacent pixel values of the input image; generating the memory address from the normalized adjacent pixel values of the input image; reading the representative value of the lower m bits saved in the memory address; and adding the read lower m bits to the input image pixel values as lower bits.