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1.中国科学院国家空间科学中心 复杂航天系统电子信息技术重点实验室, 北京 100190
2.中国科学院大学, 北京 100049
3.长春大学, 吉林 长春 130022
[ "王春哲(1989-), 男, 吉林松原人, 博士研究生, 2015年于长春理工大学获得硕士学位, 主要从事深度学习及目标检测方面的研究。E-mail:wangchunzhe163@sina.com" ]
[ "安军社(1969-), 男, 陕西渭南人, 博士, 研究员, 2004年于西北工业大学获得博士学位, 主要从事空间飞行器综合电子系统及深度学习方面的研究。E-mail:anjunshe@nssc.ac.cn" ]
收稿日期:2019-01-30,
录用日期:2019-4-29,
纸质出版日期:2019-07-05
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王春哲, 安军社, 姜秀杰, 等. 基于颜色距离与Edge Boxes候选区域算法[J]. 液晶与显示, 2019,34(7):698-707.
Chun-zhe WANG, Jun-she AN, Xiu-jie JIANG, et al. Region proposals algorithm based on color distance and Edge Boxes[J]. Chinese journal of liquid crystals and displays, 2019, 34(7): 698-707.
王春哲, 安军社, 姜秀杰, 等. 基于颜色距离与Edge Boxes候选区域算法[J]. 液晶与显示, 2019,34(7):698-707. DOI: 10.3788/YJYXS20193407.0698.
Chun-zhe WANG, Jun-she AN, Xiu-jie JIANG, et al. Region proposals algorithm based on color distance and Edge Boxes[J]. Chinese journal of liquid crystals and displays, 2019, 34(7): 698-707. DOI: 10.3788/YJYXS20193407.0698.
针对Edge Boxes算法召回率不高的问题,并结合目标的显著性检测,提出了一种基于颜色距离与Edge Boxes候选区域算法。首先利用结构化边缘检测算子获取图像的边缘特征,并通过边缘点聚合及边缘段相似性策略,获取每个边缘段的权值;其次,在待检测图像上无重叠采样若干图像块,记作C图像块,并将C图像块向周边延拓像素,获取S图像块;然后,根据颜色直方图,计算两图像块各颜色通道的卡方距离,并赋予合适权重作为该C图像块的显著性得分;最后,统计滑动窗口内边缘段的数量和C图像块数,确定候选区域。在PASCAL VOC 2007验证集上实验,当交并比取0.5,0.6,0.7,候选区域个数为2 000时,与Edge Boxes相比,所提算法的召回率分别提高了0.46%,0.35%,0.57%。每张图像的运行时间大约为0.43 s,这表明,所提算法以牺牲微小计算资源却能够有效改善候选区域质量。
For the low recall rate of Edge Boxes algorithm
a region proposals algorithm based on color distance and Edge Boxes is proposed in this paper
combining with the object saliency detection. Firstly
the edge features are computed using Structured Edge detector
and the weight values of every edge group are obtained through edge point aggregation and edge groups affinities. Secondly
several image patches are sampled randomly in the image
which is to be detected
this image patches are denoted C image patches and the S image patches are obtained through expanding the pixels of C image patches. The Chi-square distance of this two image patches are computed according to the histogram of each channel of C and S image patches
the salient scores of this image patch are obtained with putting appropriate weight value on chi-square distance of three channels. Finally
the region proposals are determined with the number of edge groups and C patches in sliding windows. The experimental results in PASCAL VOC 2007 validation set show that the object recall of the proposed algorithm increases 0.46%
0.35%
0.57% than Edge Boxes at intersection over union threshold of 0.5
0.6
0.7 in 2 000 region proposals
respectively. Our approach runs about 0.43 s in an image
this demonstrates that the proposed algorithm can effectively improve the quality of region proposals with only minor loss in computation resources.
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