公开(公告)号：US20130194292A1

公开(公告)日：2013-08-01

申请号：US13658039

申请日：2012-10-23

Applicant: Electronics and Telecommunications Research In

Inventor： Yong Ju CHO ,  Yong Ju LEE ,  Seung Kwon BEACK ,  Ji Hun CHA ,  Seong Yong LIM ,  Myung Seok KI ,  Joo Myoung SEOK ,  Jin Woong KIM ,  Muhammad Murtaza KHAN ,  Rehan HAFIZ ,  Haris ANIS ,  Mutahir LATIF ,  Ashar RASUL ,  Arshad ALI

IPC: G09G5/06

CPC classification number: H04N9/3147 ,  G06F3/1446 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0693 ,  H04N9/3182 ,  H04N9/3194

Abstract: An apparatus and a method for correcting colors of an image projection device are provided. The method includes: acquiring a photographed image by photographing a sample image projected on projection surface; generating input-output color information for n regions, based on color values of a block in the sample image and corresponding color values of the block in the photographed image; selecting one of the n regions of photographed images as a reference region; generating look-up tables (LUTs) for non-reference regions, based on the reference region and the input and output color information; and correcting colors of input images to be projected by the image projection device using the look-up tables, thereby minimizing color difference of the input images on the projection surface for both intra and inter projection device color correction while simplifying the correction procedure.

Abstract translation: 提供了一种用于校正图像投影装置的颜色的装置和方法。 该方法包括：通过拍摄投影在投影面上的样本图像来获取拍摄图像; 基于样本图像中的块的颜色值和所拍摄图像中的块的对应颜色值，生成n个区域的输入输出颜色信息; 选择拍摄图像的n个区域中的一个作为参考区域; 基于参考区域和输入和输出颜色信息产生用于非参考区域的查找表（LUT）; 并且通过使用查找表来校正由图像投影设备投影的输入图像的颜色，从而使简化校正过程的同时投影设备颜色校正的投影面上的输入图像的色差最小化。