电子科技大学学报
電子科技大學學報
전자과기대학학보
JOURNAL OF UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
2014年
6期
904-909
,共6页
约束优化%多模板配准%运动跟踪%姿态提取
約束優化%多模闆配準%運動跟蹤%姿態提取
약속우화%다모판배준%운동근종%자태제취
constrained optimization%multi-template register%motion tracking%pose extraction
单目视频下的人体三维运动跟踪过程中,二维肢体模板由于遮挡而无法配准,从而造成跟踪丢失。针对这一问题,建立人体肢体的三维纹理模型用于人体运动跟踪。首先在初始帧中得到纹理模型在直立姿态下的二维模板及各像素点的局部坐标,在其它帧中利用像素灰度一致性约束优化进行跟踪,同时由跟踪结果生成新的二维模板,形成一个模板库。随着跟踪帧数增加,模板库动态更新,最终跟踪结果由模板库中各模板配准结果中的最优值决定。实验结果表明,与单一二维模板配准算法相比,多模板匹配能够克服由于肢体自旋转而造成的遮挡,取得了更好的跟踪结果。
單目視頻下的人體三維運動跟蹤過程中,二維肢體模闆由于遮擋而無法配準,從而造成跟蹤丟失。針對這一問題,建立人體肢體的三維紋理模型用于人體運動跟蹤。首先在初始幀中得到紋理模型在直立姿態下的二維模闆及各像素點的跼部坐標,在其它幀中利用像素灰度一緻性約束優化進行跟蹤,同時由跟蹤結果生成新的二維模闆,形成一箇模闆庫。隨著跟蹤幀數增加,模闆庫動態更新,最終跟蹤結果由模闆庫中各模闆配準結果中的最優值決定。實驗結果錶明,與單一二維模闆配準算法相比,多模闆匹配能夠剋服由于肢體自鏇轉而造成的遮擋,取得瞭更好的跟蹤結果。
단목시빈하적인체삼유운동근종과정중,이유지체모판유우차당이무법배준,종이조성근종주실。침대저일문제,건립인체지체적삼유문리모형용우인체운동근종。수선재초시정중득도문리모형재직립자태하적이유모판급각상소점적국부좌표,재기타정중이용상소회도일치성약속우화진행근종,동시유근종결과생성신적이유모판,형성일개모판고。수착근종정수증가,모판고동태경신,최종근종결과유모판고중각모판배준결과중적최우치결정。실험결과표명,여단일이유모판배준산법상비,다모판필배능구극복유우지체자선전이조성적차당,취득료경호적근종결과。
In three-dimensional (3D) human motion tracking from monocular video sequences, two-dimensional (2D) body template cannot register accurately due to occlusion, which lead to track fail. To overcome this problem, a 3D texture model is used to track human motion. First, the template of the texture model and the local coordinates of each pixel under straight pose are initialized in the first frame. Then, the human motion is optimized by the pixel intensity consistency constraint, and a new 2D template is obtained by the tracked result. To contain the latest body information, the oldest template in the collection is dumped while a new template arrives, and the finally tracking result is determined by the output of template with the highest similarity. The experimental results demonstrate that the proposed algorithm is more effective in solving occlusion caused by segment self-rotation than the single 2D template matching method.