公开(公告)号：US09832455B2

公开(公告)日：2017-11-28

申请号：US14803096

申请日：2015-07-19

Applicant: VIVOTEK INC.

Inventor： Cheng-Chieh Liu ,  Shih-Ming Huang

IPC: H04N13/02 ,  G01C3/02 ,  G01C3/08 ,  G01C11/06

CPC classification number: H04N13/271 ,  G01C3/02 ,  G01C3/085 ,  G01C11/06 ,  G06K9/00771 ,  H04N13/204 ,  H04N13/239 ,  H04N2013/0081 ,  H04N2013/0092 ,  H04N2213/003

Abstract: An automatic range finding method is applied to measure a distance between a stereo camera and a reference plane. The automatic range finding method includes acquiring a disparity-map video by the stereo camera facing the reference plane, analyzing the disparity-map video to generate a depth histogram, selecting a pixel group having an amount greater than a threshold from the depth histogram, calculating the distance between the stereo camera and the reference plane by weight transformation of the pixel group, and applying a coarse-to-fine computation for the disparity-map video.

公开(公告)号：US20160088288A1

公开(公告)日：2016-03-24

申请号：US14803096

申请日：2015-07-19

Applicant: VIVOTEK INC.

Inventor： Cheng-Chieh Liu ,  Shih-Ming Huang

IPC: H04N13/02 ,  G01C3/02

CPC classification number: H04N13/271 ,  G01C3/02 ,  G01C3/085 ,  G01C11/06 ,  G06K9/00771 ,  H04N13/204 ,  H04N13/239 ,  H04N2013/0081 ,  H04N2013/0092 ,  H04N2213/003

Abstract: An automatic range finding method is applied to measure a distance between a stereo camera and a reference plane. The automatic range finding method includes acquiring a disparity-map video by the stereo camera facing the reference plane, analyzing the disparity-map video to generate a depth histogram, selecting a pixel group having an amount greater than a threshold from the depth histogram, calculating the distance between the stereo camera and the reference plane by weight transformation of the pixel group, and applying a coarse-to-fine computation for the disparity-map video.

Abstract translation: 应用自动测距方法来测量立体相机和参考平面之间的距离。 自动测距方法包括通过面向参考平面的立体摄像机获取视差图视频，分析视差图视频以产生深度直方图，从深度直方图中选择具有大于阈值的量的像素组，计算 通过像素组的加权变换，立体照相机和参考平面之间的距离，以及对视差图视频应用粗略到精细的计算。