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    • 77. 发明申请
    • Template matching on interactive surface
    • 交互式表面上的模板匹配
    • US20050227217A1
    • 2005-10-13
    • US10813855
    • 2004-03-31
    • Andrew Wilson
    • Andrew Wilson
    • G06K9/20G06K9/64G09B7/00
    • G06K9/20G06K9/6203
    • A patterned object that is placed on or adjacent to a display surface of an interactive display is detected by matching an image produced using infrared light reflected from the patterned object with one of a set of templates associated with the patterned object. The templates are created for each of a plurality of incremental rotations of the patterned object on a display surface. To implement the comparison, a sum of template data value corresponding to the intensities of the reflected light is calculated for the image of the patterned object and for each of the templates. These sums are compared to determine a rotated template that matches the patterned object within a predefined threshold, thus determining that the patterned object has been placed on or near the display surface.
    • 通过将从图案化对象反射的红外光产生的图像与与图案化对象相关联的一组模板中的一个匹配,来检测放置在交互式显示器的显示表面上或附近的图案化对象。 为显示表面上的图案化对象的多个增量旋转中的每一个创建模板。 为了实现比较,针对图案化对象的图像和每个模板计算与反射光的强度相对应的模板数据值的总和。 将这些和进行比较以确定与预定阈值内的图案化对象匹配的旋转模板,从而确定图案化对象已被放置在显示表面上或附近。
    • 78. 发明申请
    • Determining connectedness and offset of 3D objects relative to an interactive surface
    • 确定3D对象相对于交互式表面的连接性和偏移量
    • US20050226505A1
    • 2005-10-13
    • US10814761
    • 2004-03-31
    • Andrew Wilson
    • Andrew Wilson
    • G06F3/042G06K9/00G06K9/34
    • G06K9/00375G06F3/0425G06F2203/04101
    • A position of a three-dimensional (3D) object relative to a display surface of an interactive display system is detected based upon the intensity of infrared (IR) light reflected from the object and received by an IR video camera disposed under the display surface. As the object approaches the display surface, a “hover” connected component is defined by pixels in the image produced by the IR video camera that have an intensity greater than a predefined hover threshold and are immediately adjacent to another pixel also having an intensity greater than the hover threshold. When the object contacts the display surface, a “touch” connected component is defined by pixels in the image having an intensity greater than a touch threshold, which is greater than the hover threshold. Connected components determined for an object at different heights above the surface are associated with a common label if their bounding areas overlap.
    • 基于从物体反射并由设置在显示面下方的IR摄像机接收的红外(IR)光的强度来检测三维(3D)物体相对于交互式显示系统的显示面的位置。 当物体靠近显示表面时,由“红外”摄像机产生的图像中的像素由“静止”连接的组件定义,该像素的强度大于预定的悬停阈值,并且紧邻另一像素,其强度也大于 悬停阈值。 当物体接触显示表面时,通过图像中具有大于触摸阈值的强度大于悬停阈值的像素来定义“触摸”连接的分量。 如果其边界区域重叠,则在表面上方不同高度处确定的对象的连接部件与公共标签相关联。