Patent ID: 7715656

Claim:
An embedded device, comprising: a region of interest defining mechanism to define a region of interest within an image; and a transformation mechanism to apply a nonlinear transformation resulting in magnification or pinching to the region of interest such that magnification or pinching within the region of interest varies from a greater amount at a focal point of the region of interest to a lesser amount at an outer border of the region of interest, wherein the transformation mechanism applies a same nonlinear transformation function for the nonlinear transformation resulting in magnification or pinching, wherein the region of interest defining mechanism comprises a circular shape option to define a circular shape region of interest, and wherein the nonlinear magnification or pinching transformation performed by the transformation mechanism is represented by Equations (1) and (2) below: x out = { x o + ( x in - x o ) · a ( - 1 ) m · [ 1 - ( x in - x o ) 2 + ( y in - y o ) 2 R 2 ] k for ⁢ ( x in - x o ) 2 + ( y in - y o ) 2 ≤ R 2 x in otherwise ( 1 ) y out = { y o + ( y in - y o ) · a ( - 1 ) m · [ 1 - ( x in - x o ) 2 + ( y in - y o ) 2 R 2 ] k for ⁢ ( x in - x o ) 2 + ( y in - y o ) 2 ≤ R 2 y in otherwise ( 2 ) wherein x in and y in are location coordinates for an input pixel within the region of interest, x n and y o are location coordinates for a center of the circular shape region of interest, R is the radius of the circular shape region of interest, x out and y out are location coordinates for an output pixel, a is a parameter indicative of the greater amount, m is a parameter indicative of whether the transformation produces magnification or pinching, and k is a parameter indicative of the degree of smoothness and continuity in an image transition region between areas of the circular shape region of interest influenced by the greater amount and areas of the circular shape region of interest influenced by the lesser amount.