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公开(公告)号:EP1899025A4
公开(公告)日:2012-03-14
申请号:EP06748053
申请日:2006-06-22
申请人: FORSGREN DANIEL
发明人: FORSGREN DANIEL
CPC分类号: G01N15/1484 , A63B24/0021 , A63B2024/0034 , G01N15/1475 , G01N21/03 , G01N21/11 , G01N2015/1486 , G01N2021/0321 , G01N2021/0325 , G01N2021/0346 , G06T7/136 , G06T7/194 , G06T7/254 , G06T2207/20224 , G06T2207/30224 , G06T2207/30241
摘要: A video signal representing rapid ball movement is produced from a series of source images. An initial image position for the moving ball is identified by, for each image, producing a difference image between sequential images. In the difference image, image elements representing a contents alteration below a threshold are allocated a first value, and those representing a contents alteration above or equal to the threshold are allocated a second value. A set of candidates is then identified, where each candidate is represented by a group of neighboring image elements that all contain the second value. The group must fulfill a ball size criterion. A ball selection algorithm selects an initial image position from the set of ball candidates. The ball is tracked, and a composite image sequence is generated wherein a synthetic trace representing the path of the moving ball is shown as successively added image data.
摘要翻译: 代表快速球运动的视频信号由一系列源图像产生。 对于每个图像,通过在顺序图像之间产生差分图像来标识用于移动球的初始图像位置。 在差分图像中,分配表示低于阈值的内容变更的图像元素被分配第一值,并且分配表示高于或等于阈值的内容变化的图像元素被分配第二值。 然后识别一组候选,其中每个候选由一组全部包含第二值的邻近图像元素表示。 该组必须符合球尺寸标准。 球选择算法从球候选组中选择初始图像位置。 跟踪球,并且生成合成图像序列,其中表示移动球的路径的合成轨迹被示为连续添加的图像数据。
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公开(公告)号:EP1899025A1
公开(公告)日:2008-03-19
申请号:EP06748053.3
申请日:2006-06-22
申请人: Forsgren, Daniel
发明人: Forsgren, Daniel
CPC分类号: G01N15/1484 , A63B24/0021 , A63B2024/0034 , G01N15/1475 , G01N21/03 , G01N21/11 , G01N2015/1486 , G01N2021/0321 , G01N2021/0325 , G01N2021/0346 , G06T7/136 , G06T7/194 , G06T7/254 , G06T2207/20224 , G06T2207/30224 , G06T2207/30241
摘要: The present invention relates to production of a video signal representing a sports scene involving a rapid ball movement in front of an essentially static background. A series of source images (IMG) of the scene is registered. An initial image position (p1) for the moving ball is identified automatically by, for each image (IMG) in said series, producing a difference image between the image (IMG) and an image subsequent thereto. In the difference image, all image elements representing a contents alteration below a threshold level are allocated a first value, and all image elements representing a contents alteration above or equal to the threshold level are allocated a second value. A set of ball candidates is then identified in which each candidate is represented by a group of neighboring image elements that all contain the second value. The group must also fulfil a ball size criterion. The initial image position (p1) is selected from the set of ball candidates based on a ball selection algorithm. Thereafter, the ball is tracked, and a composite image sequence is generated wherein a synthetic trace (ΠB) representing the path of the moving ball is shown as successively added image data (p1, p2, p3, p4).
摘要翻译: 本发明涉及代表涉及在基本上静止的背景之前的快速球运动的运动场景的视频信号的产生。 场景的一系列源图像(IMG)被注册。 通过对于所述系列中的每个图像(IMG),自动地识别移动球的初始图像位置(p1),从而在图像(IMG)和其之后的图像之间产生差异图像。 在差分图像中,表示低于阈值水平的内容改变的所有图像元素被分配第一值,并且表示高于或等于阈值水平的内容改变的所有图像元素被分配第二值。 然后识别一组球候选者,其中每个候选者由一组全部包含第二值的相邻图像元素表示。 该组还必须符合球尺寸标准。 基于球选择算法从候选球组中选择初始图像位置(p1)。 之后,跟踪球,并且产生合成图像序列,其中表示移动球的路径的合成轨迹(IIB)被显示为连续添加的图像数据(p1,p2,p3,p4)。
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