基于最大池圖匹配的形變目標跟蹤方法
發(fā)布時間：2018-07-23 15:19
【摘要】：隨著大數(shù)據(jù)時代的到來,計算機技術(shù)和網(wǎng)絡技術(shù)突飛猛進的發(fā)展,計算機視覺技術(shù)成為信息科學研究領域的重要課題。而作為諸多計算機視覺高層應用的基礎,視覺跟蹤技術(shù)也越來越受到國內(nèi)外研究者的重視。根據(jù)實際應用,視覺跟蹤主要分為兩個大的方向：單目標跟蹤和多目標跟蹤。雖然研究者在單目標跟蹤課題上做了大量的研究,但是目標在運動過程中所包含的各種信息以及場景限制并未得到充分挖掘。單目標跟蹤過程中,目標可能會產(chǎn)生巨大形變或者面臨嚴重遮擋,此時目標的外觀會發(fā)生巨大變化,這種情況下如果繼續(xù)使用傳統(tǒng)的整體框(bounding box)來描述目標,勢必會濾掉前景目標部分或者引入背景噪聲,無法給出精確的目標表達。本文針對單目標跟蹤進行相應研究和探討,就跟蹤過程中出現(xiàn)的關鍵技術(shù)難題,提出了基于部件的最大池圖匹配的跟蹤方法(Max-pooling Graph matching based Tracker, MGT)。文章的主要內(nèi)容總結(jié)如下：(1)不同于基于目標整體模型的算法,本文算法基于目標部件模型,采用動態(tài)圖結(jié)構(gòu)表示目標部件,即目標部件的表象特征(表象信息),以及它們之間的相對位置關系(結(jié)構(gòu)信息)。對于目標搜索區(qū)域,算法基于圖像分割技術(shù)提取出超像素候選目標部件建立候選圖,并與建立好的的目標圖模型進行匹配。(2)圖匹配策略采用最大池(max-pooling)圖匹配方法,即目標圖匹配對中的每一個節(jié)點支持項都只使用候選圖中的最大池支持項,并將其相關結(jié)構(gòu)一致性分數(shù)作為匹配似然度,建立起目標圖模型和候選圖之間的部件匹配關系。在此基礎上得到目標位置的置信圖(confidence map),通過采樣可以確定目標的最優(yōu)位置。(3)最后,為了避免僅考慮局部目標部件的貢獻造成的鑒別力不夠,我們引入了整體目標的特征表達參與目標位置投票,以提高跟蹤魯棒性。
[Abstract]:With the coming of big data era and the rapid development of computer technology and network technology, computer vision technology has become an important subject in the field of information science research. As the foundation of many high-level applications of computer vision, visual tracking technology has been paid more and more attention by researchers at home and abroad. According to the practical application, visual tracking is divided into two major directions: single target tracking and multi-target tracking. Although researchers have done a lot of research on the subject of single target tracking, all kinds of information and scene constraints contained in the process of target motion have not been fully exploited. In the process of single target tracking, the target may produce huge deformation or face severe occlusion, and the appearance of the target will change greatly. In this case, if we continue to use the traditional global box (bounding box) to describe the target, It will filter out the foreground target or introduce background noise, so it can not express the target accurately. Based on the research and discussion of single target tracking, this paper presents a tracking method based on component maximum pool map matching (Max-pooling Graph matching based Tracker, MGT).) for the key technical problems in the tracking process. The main contents of this paper are summarized as follows: (1) different from the algorithm based on the whole object model, this algorithm is based on the target component model and uses dynamic graph structure to represent the target component. That is the representation of the target component (representation information) and the relative position relationship between them (structure information). For the target search region, the algorithm extracts candidate target components to build candidate images based on image segmentation technology, and matches them with the established target graph model. (2) the maximum pool (max-pooling) graph matching method is used to match the graph matching strategy. In other words, each node support item in the target graph matching pair only uses the maximum pool support item in the candidate graph, and takes the correlation structure consistency score as the matching likelihood degree, and establishes the component matching relationship between the target graph model and the candidate graph. On this basis, the (confidence map), of the target location can be obtained by sampling the optimal position of the target. (3) finally, in order to avoid considering only the contribution of the local target components, the discriminant ability is not enough. In order to improve the tracking robustness, we introduce the feature representation of the whole target to participate in the target location voting.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TP391.41
本文編號：2139816
[Abstract]:With the coming of big data era and the rapid development of computer technology and network technology, computer vision technology has become an important subject in the field of information science research. As the foundation of many high-level applications of computer vision, visual tracking technology has been paid more and more attention by researchers at home and abroad. According to the practical application, visual tracking is divided into two major directions: single target tracking and multi-target tracking. Although researchers have done a lot of research on the subject of single target tracking, all kinds of information and scene constraints contained in the process of target motion have not been fully exploited. In the process of single target tracking, the target may produce huge deformation or face severe occlusion, and the appearance of the target will change greatly. In this case, if we continue to use the traditional global box (bounding box) to describe the target, It will filter out the foreground target or introduce background noise, so it can not express the target accurately. Based on the research and discussion of single target tracking, this paper presents a tracking method based on component maximum pool map matching (Max-pooling Graph matching based Tracker, MGT).) for the key technical problems in the tracking process. The main contents of this paper are summarized as follows: (1) different from the algorithm based on the whole object model, this algorithm is based on the target component model and uses dynamic graph structure to represent the target component. That is the representation of the target component (representation information) and the relative position relationship between them (structure information). For the target search region, the algorithm extracts candidate target components to build candidate images based on image segmentation technology, and matches them with the established target graph model. (2) the maximum pool (max-pooling) graph matching method is used to match the graph matching strategy. In other words, each node support item in the target graph matching pair only uses the maximum pool support item in the candidate graph, and takes the correlation structure consistency score as the matching likelihood degree, and establishes the component matching relationship between the target graph model and the candidate graph. On this basis, the (confidence map), of the target location can be obtained by sampling the optimal position of the target. (3) finally, in order to avoid considering only the contribution of the local target components, the discriminant ability is not enough. In order to improve the tracking robustness, we introduce the feature representation of the whole target to participate in the target location voting.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TP391.41
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