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    • 7. 发明授权
    • Realtime user guidance for freehand drawing
    • 实时用户指导手绘
    • US08827710B2
    • 2014-09-09
    • US13110923
    • 2011-05-19
    • Charles Lawrence Zitnick, IIIYong Jae LeeMichael Cohen
    • Charles Lawrence Zitnick, IIIYong Jae LeeMichael Cohen
    • G09B11/10G09B11/00
    • G09B11/10G09B11/00
    • Architecture that guides the freeform drawing of objects by a user to enable the user to produce improved drawings without significant training. As the user draws, the architecture dynamically updates a relevant shadow image proximate (e.g., underlying) the user's strokes. The strokes overlay an evolving shadow image, which shadow image is suggestive of object contours that guide the user during the drawing process. Relevant edge images selected from a large database are automatically blended to construct the shadow image. As the user draws, the strokes are dynamically analyzed using an encoding of overlapping windows for fast matching with the database of images. A top ranked set of matching database edge images are aligned to the drawing, a set of spatially varying weights blend the edge images into the shadow image, and a scoring technique is employed to select the optimum shadow image for display.
    • 指导用户自由绘制对象的架构,以使用户能够在不进行重大培训的情况下生成改进的图纸。 当用户绘制时,体系结构动态地更新用户笔画的邻近(例如,底层)的相关阴影图像。 笔画覆盖了不断变化的阴影图像,阴影图像暗示着在绘图过程中引导用户的对象轮廓。 从大数据库中选择的相关边缘图像将自动混合以构建阴影图像。 当用户绘制时,使用重叠窗口的编码动态地分析笔画,以便与图像数据库快速匹配。 匹配数据库边缘图像的顶级排列集合与图形对齐,一组空间变化的权重将边缘图像混合到阴影图像中,并且使用评分技术来选择用于显示的最佳阴影图像。