公开(公告)号：US07142258B2

公开(公告)日：2006-11-28

申请号：US10724037

申请日：2003-12-01

Applicant: Jong Keun Shin ,  Woo Jin Song ,  Kyu Young Hwang ,  Woong Seo

Inventor： Jong Keun Shin ,  Woo Jin Song ,  Kyu Young Hwang ,  Woong Seo

IPC: H04N3/23

CPC classification number: H04N9/31 ,  H04N5/74 ,  H04N9/3185

Abstract: An image distortion correcting apparatus is provided tat is capable of correcting keystone distortion and pincushion distortion in a video display device. The apparatus may include a reference image generating device for generating a reference image and setting a coordinate of the reference image. A displacement measuring device may display the reference image on a screen and measure a coordinate of the displayed image. A distortion information extracting device may extract distortion information on the basis of a coordinate value of the set reference image and a coordinate value of the measured image and generating inverse-distortion information. Still further, a distortion correcting device may generate an inverse-distorted (pre-warping) image of the reference image on the basis of the generated inverse-distortion information.

Abstract translation: 提供了一种图像失真校正装置，其能够校正视频显示装置中的梯形失真和枕形失真。 该装置可以包括用于生成参考图像并设置参考图像的坐标的参考图像生成装置。 位移测量装置可以在屏幕上显示参考图像并测量显示图像的坐标。 失真信息提取装置可以基于所设置的参考图像的坐标值和测量图像的坐标值并产生反变形信息来提取失真信息。 此外，失真校正装置可以基于所生成的逆失真信息来生成参考图像的逆变形（预翘曲）图像。