Patent Document ID: 20090322787
Application ID: 12427830
Patent Status: 0

Claim One:
1. A digital image composition method, adapted to eliminate a ghost image produced by a digital image-capturing apparatus due to handshakes in shooting, the method comprising: capturing a base image and a comparison image; selecting a base pixel from the base image, and setting a core window with the base pixel at the center; finding out a comparison pixel at a corresponding position from the comparison image according to an image position of the base pixel, and setting a search window with the comparison pixel at the center; comparing pixels in each area of the search window one by one through the core window, and generating an absolute error sum value corresponding to each area; looking up a primary region difference lookup table with a brightness value of the base pixel to find out a primary region difference value; subtracting the minimum absolute error sum value from the primary region difference value to get a normalized region difference value; adjusting the brightness value of the base pixel with the normalized region difference value; and completing all the pixels in the base image, and combining the modified pixels into a composed image according to positions thereof.