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    • 6. 发明授权
    • Texture information giving method, object extracting method, three-dimensional model generating method and apparatus for the same
    • 纹理信息赋予方法,对象提取方法,三维模型生成方法和装置
    • US06356272B1
    • 2002-03-12
    • US09254127
    • 1999-11-01
    • Yukinori MatsumotoHajime TerasakiKazuhide SugimotoTsutomu Arakawa
    • Yukinori MatsumotoHajime TerasakiKazuhide SugimotoTsutomu Arakawa
    • G06T1140
    • G06T15/04G06T15/10G06T17/20
    • The present method represents a three-dimensional shape model by polygons according to a plurality of object images information picked up by rotating a real object for every arbitrary angle to assign texture information on each polygon from object image information having the largest projection area of the relevant polygon. In order to improve the color continuity between adjacent polygons, the object image information having correspondence between a polygon of interest and an adjacent polygon thereof is selected so as to be the object image information approximating the shooting position and the shooting direction. An alternative method divides an object image into a plurality of regions, obtains difference between an object image and a background image in region level, outputs a mean value of the absolute value of difference in the region level, and detects the region having the mean value of absolute values of difference equal to or greater than a threshold value as the object portion. Another further method obtains a plurality of object images by shooting only a background of an object of interest and by shooting the object of interest during each rotation. A silhouette image is generated by carrying out a difference process between the object image and the background image. A voting process is carried out on the voxel space on the basis of the silhouette image. A polygon is generated according to the three-dimensional shape obtained by the voting process. The texture obtained from the object image is mapped to the polygon.
    • 本方法根据通过旋转每个任意角度的真实对象而拾取的多个对象图像信息,通过多边形表示三维形状模型,以从具有相关的最大投影面积的对象图像信息分配每个多边形上的纹理信息 多边形 为了提高相邻多边形之间的颜色连续性,选择与感兴趣多边形及其相邻多边形之间具有对应关系的对象图像信息,以便成为近似拍摄位置和拍摄方向的对象图像信息。 一种替代方法将对象图像划分为多个区域,获得区域级别中的对象图像和背景图像之间的差异,输出区域级别的差异的绝对值的平均值,并检测具有平均值的区域 作为对象部分的等于或大于阈值的绝对值的绝对值。 另一种方法通过仅拍摄感兴趣对象的背景并且通过在每次旋转期间拍摄感兴趣的对象来获得多个对象图像。 通过执行对象图像和背景图像之间的差异处理来生成剪影图像。 在轮廓图像的基础上对体素空间进行投票处理。 根据通过投票处理获得的三维形状生成多边形。 从对象图像获得的纹理映射到多边形。
    • 7. 发明授权
    • Dynamic image processing method and device and medium
    • 动态图像处理方法及设备与介质
    • US06993157B1
    • 2006-01-31
    • US09719374
    • 2000-05-18
    • Yasuhiro OueKazuhide Sugimoto
    • Yasuhiro OueKazuhide Sugimoto
    • G06K9/00
    • G07C9/00563B60R25/2045B60R25/252B60R25/305E05F15/00E05Y2400/86G06T7/251G06T2207/10016G06T2207/30196G07C9/00158
    • A motion image processing method and device for authenticating a user using a specific device, using motion information of an object. Time series monochrome images, obtained by photographing an object, using a camera, are input. An object is detected from an initial frame of the input time series images, using a basic shape characteristic, and a plurality of reference points to be tracked are automatically determined in the object. Then, corresponding points of the respective reference points are detected in an image frame other than the initial frame among the input time series images. Subsequently, motion information of a finger is calculated, based on the result of tracking the respective reference points and an assumption of limited motion in a 3D plane. Based on the calculated motion parameter, a solid object is subjected to coordinate conversion, and displayed if necessary. As a result of the tracking, a reference point in each frame is updated. Tracking, motion parameter calculation, and displaying are repeated with respect to subsequent frames.
    • 一种运动图像处理方法和装置,用于使用特定装置来认证用户,使用对象的运动信息。 输入使用相机拍摄物体获得的时间序列单色图像。 使用基本形状特征从输入时间序列图像的初始帧检测对象,并且在对象中自动确定要跟踪的多个参考点。 然后,在输入时间序列图像之中的除初始帧之外的图像帧中检测各个参考点的相应点。 随后,基于跟踪各个参考点的结果和3D平面中的有限运动的假设来计算手指的运动信息。 根据计算出的运动参数,对实体进行坐标转换,必要时进行显示。 作为跟踪的结果,每帧中的参考点被更新。 相对于后续帧重复跟踪,运动参数计算和显示。