公开(公告)号：US06738533B1

公开(公告)日：2004-05-18

申请号：US09538067

申请日：2000-03-29

申请人： Heung-Yeung Shum ,  Jin-Xiang Chai ,  Xin Tong

发明人： Heung-Yeung Shum ,  Jin-Xiang Chai ,  Xin Tong

IPC分类号： G06K932

CPC分类号： G06T15/205 ,  Y10S707/99942

摘要： A minimum sampling rate and a minimum sampling curve for continuous representation of a scene are disclosed. The minimum sampling rate for light-field rendering is determined in accordance with Δ ⁢   ⁢ t max = 1 2 ⁢ K Ω v ⁢   ⁢ fh d , where K&OHgr;v accounts for a light-field signal cut-off frequency, a sampling camera resolution and an output resolution, ƒ specifies a sampling camera focal length, and hd specifies a light-field depth range. The minimum sampling curve for image-based rendering is determined as constrained by Nd=2K&OHgr;vƒhd&Dgr;t, Nd≧1, where Nd is the number of depth layers, &Dgr;t specifies a sampling interval along a t direction. Where IBR is be performed under uncertain depth, the curve is determined as Δ ⁢   ⁢ t max = min z e ⁢   ⁢ ( z e + Δ ⁢   ⁢ η ) ⁢   ⁢ ( z e - Δ ⁢   ⁢ η ) 4 ⁢   ⁢ fK Ω v ⁢   ⁢ Δ ⁢   ⁢ η , where &Dgr;tmax specifies a maximum sampling interval along a t direction, ze specifies an estimated depth, and &Dgr;&eegr; specifies a depth error.

摘要翻译： 公开了用于连续表示场景的最小采样率和最小采样曲线。 光场渲染的最小采样率根据KOmegav考虑到光场信号截止频率，采样相机分辨率和输出分辨率，f指定采样摄像机焦距，并且hd指定发光二极管， 场深度范围。 基于图像的渲染的最小采样曲线被确定为Nd = 2KOmegavfhdDeltat，Nd> = 1，其中Nd是深度层的数量，Deltat指定沿t方向的采样间隔。 在不确定深度下执行IBR的情况下，确定曲线，其中Deltatmax指定沿t方向的最大采样间隔，ze指定估计深度，Deltaeta指定深度误差。

公开(公告)号：US06643413B1

公开(公告)日：2003-11-04

申请号：US09536485

申请日：2000-03-27

申请人： Heung-Yeung Shum ,  Li Feng Wang ,  Xin Tong ,  Jin-Xiang Chai

发明人： Heung-Yeung Shum ,  Li Feng Wang ,  Xin Tong ,  Jin-Xiang Chai

IPC分类号： G06K940

CPC分类号： G06T3/4007 ,  G06T3/4038 ,  G06T7/30 ,  G06T15/205

摘要： The invention relates to manifold mosaic hopping for image-base rendering (IBR). In one embodiment, a set of manifold mosaics is constructed. Depending on the desired application, the mosaics can be concentric mosaics, parallel mosaics, as well as other types of mosaics. Each mosaic represents a number of unique viewpoints that different from one another in only one direction. From a current camera or viewing position within the set of mosaics, a new position can be moved to, such that the movement is continuous over any one mosaic, and is discrete across the mosaics. An image is rendered by local warping, without interpolation of more than one mosaic.

摘要翻译： 本发明涉及用于图像基础渲染（IBR）的歧管马赛克跳跃。 在一个实施例中，构成一组歧管马赛克。 根据所需的应用，马赛克可以是同心的马赛克，平行的马赛克，以及其他类型的马赛克。 每个马赛克表示在一个方向上彼此不同的许多独特视角。 从一组马赛克中的当前相机或观看位置，可以移动新位置，使得运动在任何一个马赛克上是连续的，并且在马赛克之间是离散的。 图像通过局部翘曲呈现，而不插入多于一个的马赛克。