Patent ID: 7869665

Claim:
A composite method for adjusting an image resolution, comprising: obtaining an original image; obtaining a scaling factor for adjustment S of the original image; calculating and generating an adjusted image with a scaling factor equal to 2 n , wherein n is an integer that makes S/2 n closest to 1; and converting the adjusted image into a final image that is S times the size of the original one, wherein calculating the pixel value of each of newly-added pixels x i is determined by a top left point A 1 , a top point A 2 , a top right point A 3 , a bottom left point B 1 , a bottom point B 2 , and a bottom right point B 3 , and wherein the points A 1 , A 2 , A 3 , B 1 , B 2 , and B 3 form a set of six adjacent points, and wherein the pixel value of each of the newly-added pixels x i is obtained through the following determinations: when more than three points among the adjacent six points corresponding to the internal elements of the edge map are 1, or all of them are 0, x i = A 1 + ⁢ A 3 + B 1 + B 3 4 ⁢ ; otherwise, x i = ( A 1 + B 3 ) ⁢ ⁢ edge ⁢ ⁢ A 1 ⁢ B 3 + ( B 1 + A 3 ) ⁢ ⁢ edge ⁢ ⁢ B 1 ⁢ A 3 2 ⁢ ( edge ⁢ ⁢ A 1 ⁢ B 3 + edge ⁢ ⁢ B 1 ⁢ A 3 ) ; wherein edgeA i B i is a binary code, indicating that whether the edge defined by Point A i and Point B i is located on the edge indicted by the edge map.