公开(公告)号：US09774837B2

公开(公告)日：2017-09-26

申请号：US14688982

申请日：2015-04-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ji Ho Chang ,  Dae Hwan Hwang ,  Kwang Ho Yang ,  Eul Gyoon Lim ,  Jae Il Cho

IPC: H04N9/31 ,  G06T7/80 ,  H04N17/00 ,  H04N13/02

CPC classification number: H04N9/3191 ,  G06T7/80 ,  G06T2207/10012 ,  G06T2207/10028 ,  H04N9/3185 ,  H04N13/246 ,  H04N13/254 ,  H04N17/004

Abstract: Disclosed are a system and method for performing distortion correction and calibration using a pattern projected by a projector. The system for performing distortion correction and calibration includes a projector that projects a pattern, at least one camera that generates a photographed pattern image by photographing an image onto which the pattern is projected, and an image processing device that calculates a calibration parameter by comparing an original pattern image projected by the projector and the photographed pattern image. Thus, it is possible to obtain an accurate depth image by easily utilizing an image for the pattern projected by the projector. In addition, when obtaining the depth image, the calibration parameter for correcting image distortion according to camera lens and a calibration state of cameras may be efficiently obtained using the pattern projected by the projector.

公开(公告)号：US09967516B2

公开(公告)日：2018-05-08

申请号：US14811070

申请日：2015-07-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ji Ho Chang ,  Jae Chan Jeong ,  Ho Chul Shin ,  Dae Hwan Hwang ,  Seung Min Choi ,  Eul Gyoon Lim ,  Jae Il Cho ,  Kuk Jin Yoon

IPC: H04N5/911 ,  H04N13/02 ,  G06T7/521 ,  G06T7/593 ,  H04N13/00

CPC classification number: H04N5/911 ,  G06T7/521 ,  G06T7/593 ,  G06T2207/10012 ,  G06T2207/10152 ,  H04N13/239 ,  H04N13/254 ,  H04N2013/0081

Abstract: There are provided a stereo matching method capable of increasing a resolution and precision of an object and a device for performing the method. The method includes investigating a pattern according to a predetermined period; obtaining left and right stereo images in which the investigated pattern is included or not included; determining whether each of the stereo image obtained according to the predetermined period and a buffering image that is a previous frame image of the stereo image includes the pattern; and generating a final cost volume by performing different image processing according to whether each of the stereo image and the buffering image includes the pattern. Therefore, it is possible to increase precision of a disparity of a thin object and increase accuracy and precision of an object at a long distance.