公开(公告)号：WO02101443A3

公开(公告)日：2003-07-10

申请号：PCT/CA0200870

申请日：2002-06-12

Applicant: SILICON OPTIX INC ,  KARUTA BONAVENTURE ,  LEE LOUIE

Inventor： KARUTA BONAVENTURE ,  LEE LOUIE

IPC: G02B27/00 ,  G03B27/68 ,  G06T3/00 ,  G06T11/80 ,  H04N5/74 ,  H04N9/31 ,  H04N17/00 ,  G06T5/00

CPC classification number: G06T5/006 ,  G02B27/0025 ,  G03B27/68 ,  G06T3/00 ,  G06T2207/20021 ,  H04N5/74 ,  H04N9/3185 ,  H04N9/3194

Abstract: A system and method for correcting distortion in projected images caused by the projection of an input image by a projector lens onto a projection screen having a surface that is not orthogonal to the projection axis of the projector. Projection parameters including the focal length of the projector lens and the angles that represent the pan, tilt and roll angle of the projector are obtained. Then the projected area and the best viewable rectangular area that fits within said projected area is determined. The distortion is then characterized by using a distortion transformation which corresponds to the transformation that exists between the vertices of the best viewable rectangular area and the corresponding vertices of the projected area. Finally, the distortion transformation is inverted and applied to input image to obtain a distortion free projected image.

Abstract translation: 一种用于校正由投影仪透镜将输入图像投影到具有不与投影仪的投影轴正交的表面的投影屏幕上的投影图像中的失真的系统和方法。 获得投影参数，包括投影镜头的焦距和投影机的平移，倾斜和滚动角度的角度。 然后确定投影区域和适合于所述投影区域内的最佳可视矩形区域。 然后通过使用对应于存在于最佳可视矩形区域的顶点与投影区域的对应顶点之间的变换的失真变换来表征失真。 最后，将失真变换反转并应用于输入图像，以获得无失真的投影图像。

公开(公告)号：WO2006031213A8

公开(公告)日：2006-08-24

申请号：PCT/US2004029393

申请日：2004-09-09

Applicant: SILICON OPTIX INC ,  LACHINE VLADIMIR ,  SMITH GREGORY L ,  LEE LOUIE

Inventor： LACHINE VLADIMIR ,  SMITH GREGORY L ,  LEE LOUIE

IPC: G09G5/00 ,  A61K48/00 ,  C07K14/60

CPC classification number: G06T3/0093 ,  A61K48/00 ,  C07K14/60

Abstract: A method and system for circularly symmetric anisotropic filtering over an extended elliptical or rectangular footprint in single­pass digital image warping are disclosed. The filtering is performed by first finding and adjusting an ellipse that approximates a non-uniform image scaling function in a mapped position of an output pixel in the input image space. A linear transformation from this ellipse to a unit circle in the output image space is determined to calculate input pixel radii inside the footprint and corresponding filter coefficient as a function of the radius. The shape of the footprint is determined as a trade-off between image quality and processing speed. In one implementation, profiles of smoothing and warping components are combined to produce sharper or detail enhanced output image. The method and system of the invention produce natural output image without jagging artifacts, while maintaining or enhancing the sharpness of theinput image.

Abstract translation: 公开了一种用于在单通道数字图像翘曲中的扩展椭圆形或矩形覆盖区域上的圆对称各向异性滤波的方法和系统。 通过首先查找和调整在输入图像空间中输出像素的映射位置近似非均匀图像缩放函数的椭圆来执行滤波。 确定从该椭圆到输出图像空间中的单位圆的线性变换，以计算占地面积内的输入像素半径和对应的滤波器系数作为半径的函数。 足迹的形状被确定为图像质量和处理速度之间的折衷。 在一个实现中，平滑和翘曲部件的轮廓被组合以产生更清晰或细节增强的输出图像。 本发明的方法和系统在保持或增强输入图像的清晰度的同时，产生自然输出图像而不产生锯齿状伪像。

公开(公告)号：WO02101650A3

公开(公告)日：2003-04-24

申请号：PCT/CA0200869

申请日：2002-06-12

Applicant: SILICON OPTIX INC ,  JASA TOMISLAV ,  BASSI ZORAWAR S ,  LEE LOUIE

Inventor： JASA TOMISLAV ,  BASSI ZORAWAR S ,  LEE LOUIE

IPC: G06T5/00

CPC classification number: G06T5/006

Abstract: An image transformation method for translating a non-linear 2D geometrical transformation into two separable 1D geometrical transformations first determines the inverse of the 2D geometrical transformation to form an inverse 2D geometrical transformation. Then the method converts the inverse 2D geometrical transformation into an analytical inverted 2D geometrical transformation and separates the analytical inverse 2D geometrical transformation into first and second 1D geometrical transformations. The method then represents said inverse 2D geometrical transformation and first and second 1D geometrical transformations as tensor spline surfaces and then compares an evaluation of said first and second 1D geometrical transformations at each pixel with an evaluation of the analytical inverse 2D geometrical transformation at each pixel. If the error evaluation does not meet a predetermined level of performance then the separation and transformation steps are repeated. One-dimensional spatial transform processing it results in reduced calculation, efficient memory access, and ability to process data in a real-time environment. In-addition, since the method provides a compact representation of the spatial transforms, it can be scaled for a particular level of precision.

Abstract translation: 用于将非线性2D几何变换转换成两个可分离的1D几何变换的图像变换方法首先确定2D几何变换的反向以形成反二维几何变换。 然后，该方法将逆二维几何变换转换为分析反向二维几何变换，并将分析反向二维几何变换分解为第一和第二1D几何变换。 然后，该方法表示所述逆2D几何变换以及作为张量样条曲面的第一和第二1D几何变换，然后将每个像素处的所述第一和第二1D几何变换的评估与每个像素处的分析反2D几何变换的评估进行比较。 如果误差评估不满足预定的性能水平，则重复分离和转换步骤。 一维空间变换处理可以减少计算量，高效的内存访问以及在实时环境中处理数据的能力。 另外，由于该方法提供了空间变换的紧凑表示，所以可以对特定的精度进行缩放。

公开(公告)号：WO2006076589A3

公开(公告)日：2007-07-12

申请号：PCT/US2006001265

申请日：2006-01-13

Applicant: SILICON OPTIX INC ,  ZADOR ANDREW MICHAEL ,  KUSTOV VADIM M ,  LEE LOUIE

Inventor： ZADOR ANDREW MICHAEL ,  KUSTOV VADIM M ,  LEE LOUIE

IPC: G06F3/00 ,  G06F13/00 ,  H04N5/44 ,  H04N5/445 ,  H04N5/50 ,  H04N9/74

CPC classification number: H04N5/4401 ,  H04N5/44591 ,  H04N5/50 ,  H04N21/42204 ,  H04N21/4316 ,  H04N21/4331 ,  H04N21/4347 ,  H04N21/4384 ,  H04N21/440263 ,  H04N21/47 ,  H04N21/4821

Abstract: A system and method for rapid selection and viewing of video programs in digital video broadcasting are disclosed. In one example of the invention, a parser (120) sorts the data stream from different video programs and the sorted data are then stored in a fast cache memory (130). There are at least two intra-coded frames per video program available for decoding in the cache memory, constituting at least one group of pictures. Upon selecting a video program, a decoder (170) decodes data starting from the oldest intra-coded frame in the cache memory. Full motion video and accompanying audio of the new video program are therefore available immediately resulting in a seamless and aesthetically pleasing transition between video programs. Multiple decoders are used in other aspects of the invention to provide thumbnail videos of a group of video programs for visual program selection.

Abstract translation: 公开了一种用于在数字视频广播中快速选择和观看视频节目的系统和方法。 在本发明的一个示例中，解析器（120）对来自不同视频节目的数据流进行排序，然后将分类数据存储在快速高速缓冲存储器（130）中。 每个视频节目存在至少两个帧内编码帧，可用于高速缓冲存储器中的解码，构成至少一组图像。 在选择视频节目时，解码器（170）对从高速缓冲存储器中的最旧的帧内编码帧开始的数据进行解码。 因此，全新的视频节目的全动态视频和随附的音频可立即获得，从而在视频节目之间实现无缝和美观的过渡。 在本发明的其他方面中使用多个解码器来提供用于视觉节目选择的一组视频节目的缩略图视频。

公开(公告)号：WO03107274A2

公开(公告)日：2003-12-24

申请号：PCT/CA0300888

申请日：2003-06-12

Applicant: SILICON OPTIX INC ,  BASSI ZORAWAR S ,  LEE LOUIE ,  RAMACHANDRAN GOPAL

Inventor： BASSI ZORAWAR S ,  LEE LOUIE ,  RAMACHANDRAN GOPAL

IPC: G06K9/40 ,  G06T3/00 ,  G06T5/00

CPC classification number: G06T3/0018 ,  G06T3/00 ,  G06T5/006

Abstract: An electronic correction system and method for correcting optical anomalies, namely distortions, color non-convergence (excluding axial chromatic aberration) and luminance (or chrominance) non-uniformity. Each effect is modeled as a transformation in either spatial (positional) space or color space. Representing the effects as transformations of digital pixel data, allows the different anomalies to be resolved within a common framework, namely that of image 'warping'. The anomaly, having been expressed as a pixel transformation, is then eliminated by electronically applying the inverse transformation. This process is equivalent to digitally manipulating or warping the image in position and/or color space and accordingly this can be achieved using commercially known warping circuits. In addition, the transformation can also contain a component to additionally perform any application specific image warping (e.g. scaling and geometric transformations). Finally, by storing a sequence of transformations, adaptive anomaly correction and dynamic effects can be achieved.

Abstract translation: 用于校正光学异常的电子校正系统和方法，即失真，颜色不收敛（不包括轴向色差）和亮度（或色度）不均匀性。 每个效果被建模为空间（位置）空间或颜色空间中的变换。 将影响代表数字像素数据的转换，可以在共同的框架内解决不同的异常，即图像“翘曲”。 已经表示为像素变换的异常然后通过电子应用逆变换来消除。 该过程相当于在位置和/或颜色空间中数字地操纵或扭曲图像，因此可以使用商业上已知的翘曲电路来实现。 此外，转换还可以包含附加地执行任何应用特定图像翘曲（例如缩放和几何变换）的组件。 最后，通过存储一系列变换，可以实现自适应异常校正和动态效果。

公开(公告)号：WO03001449A3

公开(公告)日：2003-03-06

申请号：PCT/CA0200856

申请日：2002-06-11

Applicant: SILICON OPTIX INC ,  LEE LOUIE ,  CANDLER FREDERICK CHRISTOPHER

Inventor： LEE LOUIE ,  CANDLER FREDERICK CHRISTOPHER

IPC: G06T1/60

CPC classification number: G06T1/60

Abstract: An image data processing method and system receives image data from a burst memory buffer and provides output image data to a vertical filter for filtering. The method determines whether a new frame of input image data has been received, said frame of data having a plurality of blocks, each block having a plurality of rows and columns. A vertical input buffer uses a read pointer, an oldest unused data pointer, and a write pointer to keep track of the data that is being read and stored Data is read and stored into said vertical input buffer by determining the minimum offset for the block, reading a row of input buffer by determining the minimum offset for the block, reading a row of input image data from the burst memory buffer and skipping the row depending on the minimum offset until minimum offset reached, and storing the row of input image data in said vertical input buffer for processing by the vertical filter until the buffer is full. If the entire frame has been processed then the pointers are all reset. If an entire column in the output image has been processed then the column data is flushed. In another embodiment, a low latency mode is adopted such that it is not necessary for the columns to be completely processed before switching to the next column horizontally.

Abstract translation: 一种图像数据处理方法和系统从突发存储器缓冲器接收图像数据，并将输出图像数据提供给垂直滤波器以进行滤波。 该方法确定是否接收到新的输入图像数据帧，所述数据帧具有多个块，每个块具有多个行和列。 垂直输入缓冲器使用读指针，最旧的未使用数据指针和写指针来跟踪正被读取和存储的数据。通过确定块的最小偏移量来读取和存储数据到所述垂直输入缓冲器中， 通过确定块的最小偏移来读取一行输入缓冲器，从突发存储器缓冲器读取一行输入图像数据，并取决于最小偏移量跳过该行，直到最小偏移量达到为止，并将该行输入图像数据存储在 所述垂直输入缓冲器用于由垂直滤波器处理直到缓冲器满。 如果整个帧已被处理，则指针全部被重置。 如果输出图像中的整个列已被处理，则列数据将被刷新。 在另一实施例中，采用低等待时间模式，使得在水平切换到下一列之前不需要完全处理列。