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公开(公告)号:KR1020090002698A
公开(公告)日:2009-01-09
申请号:KR1020070066638
申请日:2007-07-03
Applicant: 삼성전자주식회사
IPC: H04N5/74
Abstract: An apparatus and a method for correcting a projected image are provided to correct a projected image by reflecting a geometrical characteristic of a screen on a calculated projection surface, there more accuately modeling the geometrical characteristic of the projection surface. An apparatus(100) for correcting a projected image comprises an encoding unit(110), a projection unit(120), a photographing unit(130), a preprocessor(140), a detection unit(150), a decoding unit(160), a matching block(170), a correction value calculation unit(180), a storage unit(190) and a correction unit(195). The projection unit projects an image for correction and a series of coding images having a different color pattern to a projection surface. The correction value calculation unit calculates a geometrical characteristic based on the projected correction image and the first and second photographing images in which a series of coding images is photographed. The correction unit corrects an input image to be projected on the projection surface by reflecting the calculated geometrical characteristic of the projection surface.
Abstract translation: 提供了用于校正投影图像的装置和方法,以通过在计算的投影表面上反映屏幕的几何特征来校正投影图像,更准确地模拟投影表面的几何特征。 用于校正投影图像的装置(100)包括编码单元(110),投影单元(120),拍摄单元(130),预处理器(140),检测单元(150),解码单元 ),匹配块(170),校正值计算单元(180),存储单元(190)和校正单元(195)。 投影单元将用于校正的图像和具有不同颜色图案的一系列编码图像投影到投影表面。 校正值计算单元基于投影校正图像和拍摄一系列编码图像的第一和第二拍摄图像来计算几何特性。 校正单元通过反映投影表面的计算出的几何特征来校正投影在投影表面上的输入图像。