公开(公告)号：US20170046855A1

公开(公告)日：2017-02-16

申请号：US15306980

申请日：2014-04-28

Applicant: Institute of Automation Chinese Academy of Sciences

Inventor： Zhiqiang Cao ,  Xilong Liu ,  Chao Zhou ,  Min Tan ,  Kun Ai

IPC: G06T7/60

CPC classification number: G06T7/60 ,  G06T7/70 ,  G06T2207/10004 ,  G06T2207/20021 ,  G06T2207/20084 ,  G06T2207/30244 ,  G06T2207/30252

Abstract: The disclosure relates to a method for detection of the horizontal and gravity directions of an image, the method comprising: selecting equidistant sampling points in an image at an interval of the radius of the sampling circle of an attention focus detector; placing the center of the sampling circle of the attention focus detector on each of the sampling points, and using the attention focus detector to acquire attention focus coordinates and the corresponding significant orientation angle, and all the attention focus coordinates and the corresponding significant orientation angles constitute a set Ωp; using an orientation perceptron to determine a local orientation angle and a weight at the attention focus according to the gray image information, and generating a local orientation function; obtaining a sum of each of the local orientation functions as an image direction function; obtaining a function MCGCS(β), and further obtaining the horizontal and gravity identification angles.

Abstract translation: 本发明涉及一种用于检测图像的水平和重力方向的方法，所述方法包括：以注意焦点检测器的取样圆的半径的间隔选择图像中的等距采样点; 将注意焦点检测器的取样圆的中心放置在每个采样点上，并使用注意焦点检测器获取注意焦点坐标和相应的重要取向角，并且所有注意焦点坐标和相应的重要取向角构成 一套Ωp; 使用定向感知器来根据灰度图像信息来确定注意焦点处的局部取向角度和重量，并且产生局部取向函数; 获得每个局部取向函数的和作为图像方向函数; 获得函数MCGCS（β），并进一步获得水平和重力识别角度。

公开(公告)号：US09886775B2

公开(公告)日：2018-02-06

申请号：US15306980

申请日：2014-04-28

Applicant: Institute of Automation Chinese Academy of Sciences

Inventor： Zhiqiang Cao ,  Xilong Liu ,  Chao Zhou ,  Min Tan ,  Kun Ai

IPC: G06K9/00 ,  G06T7/60

CPC classification number: G06T7/60 ,  G06T7/70 ,  G06T2207/10004 ,  G06T2207/20021 ,  G06T2207/20084 ,  G06T2207/30244 ,  G06T2207/30252

Abstract: The disclosure relates to a method for detection of the horizontal and gravity directions of an image, the method comprising: selecting equidistant sampling points in an image at an interval of the radius of the sampling circle of an attention focus detector; placing the center of the sampling circle of the attention focus detector on each of the sampling points, and using the attention focus detector to acquire attention focus coordinates and the corresponding significant orientation angle, and all the attention focus coordinates and the corresponding significant orientation angles constitute a set Ωp; using an orientation perceptron to determine a local orientation angle and a weight at the attention focus according to the gray image information, and generating a local orientation function; obtaining a sum of each of the local orientation functions as an image direction function; obtaining a function MCGCS(β), and further obtaining the horizontal and gravity identification angles.