Patent ID: 8744205

Claim:
An apparatus for adjusting images, comprising: an image decomposing unit for decomposing an input image into high-pass images (HP 1 , HP 2 , . . . , HPN) and a low-pass image (LPN) and for decomposing a further input image into further high-pass images (FH 1 , FHP 2 , . . . , FHPN) and a further low-pass image (FLPN); an image adjusting values determining unit for determining high-pass image adjusting values (ε 1 , ε 2 , . . . , ε N ) for adjusting the high-pass images (HP 1 , HP 2 , . . . , HPN) and a low-pass image adjusting value (δ N ) for adjusting the low-pass image (LPN), wherein the image adjusting values determining unit is adapted for determining the high-pass image adjusting values (ε 1 , ε 2 , . . . , ε N ) based on statistical values derived from the high-pass images HP 1 , HP 2 , . . . , HPN), wherein the high-pass image adjusting value (ε n ) for a respective high-pass image (HPn) is determined by determining a multiplication factor between the statistical value derived from the respective high-pass image (HPn) and a corresponding statistical value derived from a corresponding further high-pass image (FHPn); an image adjusting unit for adjusting the high-pass images (HP 1 , HP 2 , . . . , HPN) using the high-pass image adjusting values (ε 1 , ε 2 , . . . , ε N ) and the low-pass image (LPN) using the low-pass image adjusting value (δ N ); and an image recomposing unit for recomposing the adjusted high-pass images (HP 1 *, HP 2 *, . . . , HPN*) and the adjusted low-pass image (LPN*) into an adjusted image.