METHOD FOR IMPROVING QUALITY OF IMAGE BY REVISING BLACK LEVEL OF PHOTOGRAPHED IMAGE SIGNAL RECORDED BY REDUCED BLACK LEVEL VALUE

摘要

PURPOSE: An apparatus and a method for improving quality of image are provided, which revise a black level to a chroma signal through sensed illumination of an illuminance sensor, and increase the quality of image.;CONSTITUTION: In case of flash function of a camera is turned on, the control unit obtains sensed illumination value of illumination sensors(205,207). When the acquired illumination value is included within a range of the illumination value for black level compensation to a chroma signal, the control unit extracts black level value from a memory(209). The control unit diminishes a black level value as predetermined level(211). The control unit revises the black level of photographed image signal recorded by a control of signal processor with reduced black level value(213).;COPYRIGHT KIPO 2010