Patent ID: 7580168
Filing Date: 2009-08-25
Classification: H04N

Abstract:
1. A density-adjusting device, comprising: a density-adjustment-value setting unit configured to set a density adjustment value, according to which a density of image data is desired to be adjusted with respect to a predetermined reference density value; a gamma characteristics storing unit that is pre-stored with a set of reference gamma characteristics in correspondence with the reference density value and that is pre-stored with a plurality of sets of non-reference gamma characteristics in correspondence with a plurality of density adjustment values that are configured to be set by the density-adjustment-value setting unit, further wherein each set of non-reference gamma characteristics of the plurality of pre-stored sets of non-reference gamma characteristics corresponds to one density adjustment value; and a correcting unit configured to correct values of the image data by using one set of non-reference gamma characteristics that corresponds to the density adjustment value set by the density-adjustment-value setting unit, thereby adjusting the density of the image data according to the desired density adjustment value, wherein the set of reference gamma characteristics includes: