| 引用本文: | 张永强,程丹松,王君,吴锐,陈竟,石大明.拓展模板的视频跟踪技术[J].哈尔滨工业大学学报,2016,48(4):66.DOI:10.11918/j.issn.0367-6234.2016.04.011 |
| ZHANG Yongqiang,CHENG Dansong,WANG Jun,WU Rui,CHEN Jing,SHI Daming.Robust visual tracking based on expanded template[J].Journal of Harbin Institute of Technology,2016,48(4):66.DOI:10.11918/j.issn.0367-6234.2016.04.011 |
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| 摘要: |
| 在视觉目标跟踪（video tracking）过程中，当跟踪图像存在背景杂波、图像噪声（如图像遮挡、图像快速移动）时，算法往往不能取得很好的图像追踪效果.为解决该问题，在经典L1-tracker追踪算法的基础上，针对目标遮挡、目标消失等严重影响跟踪效果的情况进行研究，提出加入拓展模板（固定模板和近况模板）的策略来提高跟踪精度和抗遮挡能力.固定模板保持追踪目标最初的图像特征，防止错误的追踪结果在模板更新时引入错误的特征，进而导致识别目标偏移.近况模板记录目标的最新跟踪结果，避免由于点模板的大量使用而造成遮挡的误识别.通过对多个标准数据集的实验测试，证明加入新策略的L1-tracker算法，在不破坏原有L1-tracker优势的基础上，显著地提升了L1-tracker算法应对遮挡问题的能力.
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| 关键词: 图像目标追踪 稀疏表示 L1-tracker 固定模板 近况模板 |
| DOI：10.11918/j.issn.0367-6234.2016.04.011 |
| 分类号:TP391 |
| 文献标识码:A |
| 基金项目:国家自然科学基金 (61440025); 中国航天科技集团公司哈尔滨工业大学联合技术创新中心(CASC-HIT13-1004); 国防科工局重大专项(公开)(50-Y20A08-0508-15/16);国家博士后科学基金(20100480998). |
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| Robust visual tracking based on expanded template |
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ZHANG Yongqiang, CHENG Dansong, WANG Jun, WU Rui, CHEN Jing, SHI Daming
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(School of Computer Science and Technology, Harbin Institute of Technology, 150001 Harbin, China)
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| Abstract: |
| In video tracking applications, most algorithms often fail in such conditions as object occlusion, disappearance. To address this issue, an improved L1-tracker algorithm is proposed. Expanded templates (including the fixed template and the evolved template) are applied to improve the tracking accuracy and robustness.The fixed template keeps the original features of the target, and prevents the error introduced by false tracking result with the template update. The evolved template recording the latest tracking result is used to avoid massive use of trivial templates which will lead to the false recognition of occlusion. The experimental results on a number of standard data sets prove that the application of expended templates improves the ability of L1-tracker algorithm to deal with the occlusion problem.
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| Key words: image target tracking sparse representation L1-tracker fixed template evolved template |
