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    • 93. 发明公开
    • Hologram information forming method
    • Verfahren zum Erzeugen von holographischer信息。
    • EP0593300A1
    • 1994-04-20
    • EP93308211.7
    • 1993-10-14
    • FUJITSU LIMITED
    • Ueda, Akihiko, c/o FUJITSU LimitedMonzen, Hirokuni, c/o FUJITSU LimitedAritake, Hirokazu, c/o FUJITSU LimitedKato, Masayuki, c/o FUJITSU LimitedNakashima, Masato, c/o FUJITSU Limited
    • G03H1/08
    • G03H1/08G03H1/2294G03H2001/0423G03H2001/085G03H2210/36G03H2210/452G03H2210/454G03H2225/32G03H2240/62
    • A hologram surface to express a phase distribution, a visual field in which a solid image can be seen; and a stereoscopic display limit are set in a virtual space. A target to be stereoscopically displayed is subsequently expressed in the virtual space by a set of micro polygons. A plurality of slice planes which are parallel with the horizontal plane are set into the virtual space including the target. The line segments which intersect the polygons are obtained every slice plane. The detected line segment is divided or clipped as necessary and is finally divided into the portion which can be always seen from the whole region of the visual field and a portion which is obstructed by another line segment and can be seen from only a part of the visual field, thereby extracting the line segment. In the calculation of a phase distribution, sampling points are set onto the extracted line segment, a 1-dimensional hologram phase distribution on the hologram surface is calculated every sampling points, and the calculated 1-dimensional hologram phase distributions are added every same slice plane.
    • 表示相位分布的全息图表面,可以看到实心图像的视野; 并且在虚拟空间中设置立体显示限制。 立体显示的目标随后通过一组微多边形在虚拟空间中表示。 将与水平面平行的多个切片平面设置在包括目标的虚拟空间中。 每个切片平面获得与多边形相交的线段。 检测出的线段根据需要进行分割或剪辑,最后分为从视野的整个区域总是可以看到的部分和被另一个线段阻挡的部分,只能从 视野,从而提取线段。 在相位分布的计算中,将采样点设置在提取的线段上,在每个采样点计算全息图表面上的一维全息图相位分布,并将计算出的一维全息图相位分布与每个相同的切片平面相加 。
    • 100. 发明公开
    • Method and system for producing computer generated holograms realizing real time holographic video production and display
    • 用于产生计算机生成的全息图用于实现实时视频全息的生产和再生产的方法和装置
    • EP0862096A2
    • 1998-09-02
    • EP97121447.3
    • 1997-12-05
    • NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    • Horikoshi, TsutomuHiguchi, KazuhitoAkimoto, TakaakiSuzuki, Satoshi
    • G03H1/00G03H1/08
    • G03H1/0808G03H1/2294G03H1/268G03H1/34G03H2001/0825G03H2001/0833G03H2001/303G03H2210/30G03H2210/32G03H2210/40G03H2210/452G03H2210/56G03H2210/62G03H2226/05G03H2240/56G03H2240/62
    • A scheme for producing computer generated holograms in which a motion vector of each object to be displayed is detected, objects are classified according to their motions, a hologram fringe pattern for each classified group of objects is calculated separately by image processing stored basic patterns, and a hologram to be displayed is produced by synthesizing all separately calculated hologram fringe patterns. In another aspect, a gaze point of the observer is determined, and a hologram to be displayed is produced by using high resolution hologram fringe patterns for objects located at the gaze point and low resolution hologram fringe patterns for regions other than the gaze point. In another aspect, a distance between each display target object and a hologram plane is obtained, a region of calculations for interference fringes due to each display target object is limited according to the obtained distance, interference fringes due to each display target object are separatedly calculated within the limited region of calculations, and a hologram to be displayed is produced by synthesizing separately calculated interference fringes due to all display target objects.
    • 被检测,其中,每个对象的运动向量将被显示的制造计算机产生全息图的方案中,对象被分类雅丁到它们的运动,为每个分类的组的对象的全息图的条纹图案是由图像处理存储的基本图案分开计算的,和 要被显示的全息图是通过合成所有单独计算全息条纹图案产生。 在另一个方面,观察者的注视点确定性开采,并且要被显示的全息图是通过使用高分辨率全息条纹图案对位于注视点和低分辨率的全息条纹图案比所述凝视点其他区域的物体产生的。 在另一个方面中,每个显示目标对象和全息平面之间的距离,获得,计算为干涉条纹的区域由于被限制雅丁到所获得的距离的每个显示目标对象,干涉条纹由于每个显示targetObject被separatedly计算 计算的有限区域中,并且全息图内要被显示通过合成分别计算干涉条纹产生由于所有显示目标对象。