旋转不变梯度直方图目标描述方法

谌德荣; 王文斌; 刘丙太; 姜威; 俞达; 宫久路

doi:10.11999/JEIT150546

旋转不变梯度直方图目标描述方法

doi: 10.11999/JEIT150546

1.
(北京理工大学机电工程与控制国家重点实验室北京 100081) ②(北京宇航系统工程研究所北京 100076)

基金项目:

国家部委基金，北京理工大学基础研究基金

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出版历程
- 收稿日期: 2015-05-11
- 修回日期: 2015-09-16
- 刊出日期: 2016-01-19

Rotation-invariant Histogram of Oriented Gradients for Target Description

1.
(National Laboratory for Mechatronic and Control, Beijing Institute of Technology, Beijing 100081, China)
2.
(Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China)

Funds:

The Foundations of General Armament Department, Funds of Beijing Institute of Technology

摘要

摘要: 论文为解决旋转目标图像匹配问题，提出旋转不变梯度直方图(RI-HOG)目标描述方法。RI-HOG描述方法首先将目标区域等间隔划分为多个同心圆环并统计每个圆环的梯度直方图(HoG)，各圆环HoG累加的结果作为目标区域的主方向，再将各圆环HoG根据主方向旋转相应角度作主方向归一化处理，最后把旋转后的各圆环HoG按空间顺序连接后即生成RI-HOG。对实际采集图像的仿真结果表明，基于RI-HOG的目标匹配算法在目标旋转任意角度时依然能够准确检测到目标。RI-HOG具有很好的旋转不变性。
- 自动目标识别 /
- 特征描述方法 /
- 梯度直方图 /
- 旋转不变性
Abstract: A rotation-invariant feature descripts method called Rotation Invariant Histogram of Oriented Gradients (RI-HOG) is proposed for automatic target recognition. RI-HOG calculates gradient of image first, then the image window is divided into a set of un-overlapped annular regions, called sells, and the Histogram of Gradient (HoG) is used to calculate a feature vector for each cells. After that the HoG of each circle is accumulated to get the main angle of the target area, and then it is rotated due to the main angle to make a normalization of the main angle. At last, the HoG of each circle after rotating is linked to generate the rotation-invariant target feature vector. Experiment results show that target detection method using RI-HOG can find the target under arbitrary rotations. RI-HOG is a rotation-invariant target feature descriptor.
- Automatic target recognition /
- Feature description method /
- Histogram of Gradient (HoG) /
- Rotation invariant

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参考文献(17)

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