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    • 3. 发明申请
    • SYSTEMS AND METHODS FOR USING VISUAL HULLS TO DETERMINE THE NUMBER OF PEOPLE IN A CROWD
    • 使用视觉丘来确定人物人数的系统和方法
    • WO2004111799A3
    • 2005-04-14
    • PCT/US2004018842
    • 2004-06-14
    • HONDA MOTOR CO LTDGONZALEZ-BANOS HECTOR HYANG DANNY BGUIBAS LEONIDAS J
    • GONZALEZ-BANOS HECTOR HYANG DANNY BGUIBAS LEONIDAS J
    • G06F20060101G06K9/00
    • G06K9/00778
    • Systems, apparatuses, and methods are presented that determine the number of people in a crowd using visual hull information. In one embodiment, an image sensor generates a conventional image of a crowd. A silhouette image is then determined based on the conventional image. The intersection of the silhouette image cone and a working volume is determined. The projection of the intersection onto a plane is determined. Planar projections from several image sensors are aggregated by intersecting them, forming a subdivision pattern. Polygons that are actually empty are identified and removed. Upper and lower bounds of the number of people in each polygon are determined and stored in a tree data structure. This tree is updated as time passes and new information is received from image sensors. The number of people in the crowd is equal to the lower bound of the root node of the tree.
    • 提出了使用视觉船体信息确定人群中的人数的系统,装置和方法。 在一个实施例中,图像传感器产生人群的常规图像。 然后基于常规图像确定剪影图像。 确定影像锥体与工作体积的交点。 确定交叉点在平面上的投影。 来自几个图像传感器的平面投影通过与它们相交而聚合,形成细分图案。 实际上是空的多边形被识别和删除。 确定每个多边形中的人数的上限和下限,并将其存储在树形数据结构中。 随着时间的流逝,这棵树被更新,从图像传感器接收到新的信息。 人群中的人数等于树根节点的下限。
    • 4. 发明申请
    • SYSTEMS AND METHODS FOR USING VISUAL HULLS TO DETERMINE THE NUMBER OF PEOPLE IN A CROWD
    • 使用视觉丘来确定人物人数的系统和方法
    • WO2004111799A2
    • 2004-12-23
    • PCT/US2004/018842
    • 2004-06-14
    • HONDA MOTOR CO., LTD.GONZALEZ-BAÑOS, Héctor, H.YANG, Danny, B.GUIBAS, Leonidas, J.
    • GONZALEZ-BAÑOS, Héctor, H.YANG, Danny, B.GUIBAS, Leonidas, J.
    • G06F
    • G06K9/00778
    • Systems, apparatuses, and methods are presented that determine the number of people in a crowd using visual hull information. In one embodiment, an image sensor generates a conventional image of a crowd. A silhouette image is then determined based on the conventional image. The intersection of the silhouette image cone and a working volume is determined. The projection of the intersection onto a plane is determined. Planar projections from several image sensors are aggregated by intersecting them, forming a subdivision pattern. Polygons that are actually empty are identified and removed. Upper and lower bounds of the number of people in each polygon are determined and stored in a tree data structure. This tree is updated as time passes and new information is received from image sensors. The number of people in the crowd is equal to the lower bound of the root node of the tree.
    • 提出了使用视觉船体信息确定人群中的人数的系统,装置和方法。 在一个实施例中,图像传感器产生人群的常规图像。 然后基于常规图像确定剪影图像。 确定影像锥体与工作体积的交点。 确定交叉点在平面上的投影。 来自几个图像传感器的平面投影通过与它们相交而聚合,形成细分图案。 实际上是空的多边形被识别和删除。 确定每个多边形中的人数的上限和下限,并将其存储在树形数据结构中。 随着时间的流逝,这棵树被更新,从图像传感器接收到新的信息。 人群中的人数等于树根节点的下限。