Patent ID: 8514274

Claim:
An apparatus for compensating a 3D image in a projector, comprising: a test pattern generating unit configured to generate at least one of a left eye image test pattern and a right eye image test pattern; a display unit configured to display the generated test pattern; a sensing unit configured to sense the displayed test pattern; an analyzing unit configured to extract an information value of the test pattern by analyzing the sensed test pattern; and an image compensating unit configured to compensate an information value of the left eye image test pattern and an information value of the right eye image test pattern to correspond to the extracted information value, the image compensating unit further configured to control the display unit to display the 3D image according to the compensated information values, wherein the test pattern generating unit includes: a first test pattern generating unit configured to generate the left eye image test pattern, a second test pattern generating unit configured to generate the right eye image test pattern, and a control unit configured to control either the first test pattern generating unit or the second test pattern generating unit according to a preset order, and wherein the control unit includes: a first test pattern generation order determining unit configured to determine a generation order of the left and right eye image test patterns, a video level selecting unit configured to select at least one of video levels of the left and right eye image test patterns according to the determined generation order, a second test pattern generation order determining unit, if a plurality of the video levels are selected, the second test pattern generation order determining unit configured to determine a generation order of the test patterns corresponding to the at least one of video levels, and a test pattern control unit configured to control the left and right eye test patterns according to the generation orders determined by the first and second test pattern generation order determining units.