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2. 发明申请

US20090231447A1 APPARATUS AND METHOD FOR GENERATING PANORAMA IMAGES AND APPARATUS AND METHOD FOR OBJECT-TRACKING USING THE SAME 有权
标题翻译：用于产生全景图像的装置和方法和装置以及使用其进行对象跟踪的方法
公开(公告)号：US20090231447A1
公开(公告)日：2009-09-17
申请号：US12402605
申请日：2009-03-12
申请人： Joon-Ki Paik , Kyoung-Ju Park , In-Ho Paek
发明人： Joon-Ki Paik , Kyoung-Ju Park , In-Ho Paek
IPC分类号： H04N5/222
CPC分类号： G01S3/7864 , G06T3/4038 , H04N5/23238
摘要： Provided are an apparatus and method for generating panorama images and an apparatus and method for tracking an object using the same. The apparatus for generating panorama images estimates regional motion vectors with respect to respective lower regions set in an image frame, determines a frame motion vector by using the regional motion vectors based on a codebook storing sets of normalized regional motion vectors corresponding to a camera's motion and then accumulates motion mediating variables computed with respect to respective continuous image frames to determine an overlapping region, and matches the overlapping regions to generate a panorama image. The apparatus for tracking an object sets the panorama image generated by the apparatus for generating panorama images as a background image, and determines an object region by averaging pixel value difference values between pixels that constitute a captured input image and corresponding pixels in the panorama image. Regional motion vectors are estimated by using the coordinate of a pixel selected in lower regions, and thus a computing process can be simplified and a process speed can be increased. In addition, effects of wrongly estimated regional motion vectors can be minimized by using a codebook. Furthermore, noises are minimized and an object can be accurately extracted by using averaged pixel value difference values.
摘要翻译：提供了一种用于产生全景图像的装置和方法，以及用于跟踪使用该图像的对象的装置和方法。用于生成全景图像的装置估计相对于在图像帧中设置的相应较低区域的区域运动矢量，通过使用区域运动矢量来确定帧运动矢量，所述区域运动矢量基于存储与相机运动对应的归一化区域运动矢量集合的码本，然后累积关于相应连续图像帧计算的运动中介变量以确定重叠区域，并匹配重叠区域以生成全景图像。用于跟踪对象的装置将由生成全景图像的装置生成的全景图像设置为背景图像，并且通过对构成捕获的输入图像的像素与全景图像中的对应像素之间的像素值差值进行平均来确定对象区域。通过使用在较低区域中选择的像素的坐标来估计区域运动矢量，从而可以简化计算过程并且可以提高处理速度。此外，通过使用码本可以最大限度地减少错误估计的区域运动矢量的影响。此外，噪声被最小化，并且可以通过使用平均像素值差值来精确地提取对象。

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