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    EDGE ADAPTIVE DEMOSAIC SYSTEM AND METHOD
    2.
    发明申请
    EDGE ADAPTIVE DEMOSAIC SYSTEM AND METHOD 失效
    边缘自适应演化系统和方法

    公开(公告)号：US20080075394A1

    公开(公告)日：2008-03-27

    申请号：US11949345

    申请日：2007-12-03

    申请人： Qifan Huang ,  Li Sha

    发明人： Qifan Huang ,  Li Sha

    IPC分类号： G06K9/32

    CPC分类号： H04N9/045 ,  G06T3/4015 ,  H04N2209/046

    摘要： A demosaic system and method that supports multiple CFA pattern inputs is disclosed. The demosaic system is capable of handling both RGB Bayer input and CMYG input and perform demosaic operations on both inputs to recover full-color images from the raw input images. The system uses a variable number gradient demosiac process. The process uses a 5×5 neighborhood of sensor pixel data centered at the pixel under consideration. The process calculates a set of gradients corresponding to different directions within the neighborhood of the sensor pixel data. A threshold value is determined and a subset of gradients is selected from the set of gradients that fall below the threshold value. The system calculates estimation values for the missing color value and the actual measured center pixel color value obtained from the sensor data on directions that are within the subset of gradients below the threshold. The system then determines the sum of the missing color estimation values and the sum of the actual center pixel color estimation values. The system interpolates the missing color value by using the average difference of the summed estimation values for the missing color and the summed estimation values for the actual center measured pixel value from the sensor data.

    摘要翻译： 公开了一种支持多个CFA模式输入的去马赛克系统和方法。 德马赛克系统能够处理RGB拜耳输入和CMYG输入，并对两个输入进行去马赛克操作，以从原始输入图像中恢复全色图像。 系统使用可变数量梯度demosiac过程。 该过程使用在所考虑的像素的中心的传感器像素数据的5×5邻域。 该过程计算对应于传感器像素数据附近的不同方向的一组梯度。 确定阈值，并且从落在阈值以下的梯度集合中选择梯度子集。 系统计算从传感器数据获得的缺失颜色值和实际测量的中心像素颜色值的估计值，该方向在低于阈值的梯度子集内。 然后，系统确定缺失颜色估计值和实际中心像素颜色估计值之和的和。 系统通过使用缺失颜色的相加估计值与传感器数据中实际中心测量像素值的相加估计值的平均差来内插缺失色值。

    System and method for rapidly scaling and filtering video data
    3.
    发明授权
    System and method for rapidly scaling and filtering video data 失效
    快速缩放和过滤视频数据的系统和方法

    公开(公告)号：US07259796B2

    公开(公告)日：2007-08-21

    申请号：US10966058

    申请日：2004-10-14

    申请人： Li Sha ,  Qifan Huang

    发明人： Li Sha ,  Qifan Huang

    IPC分类号： H04N7/01 ,  H04N1/393

    CPC分类号： G06T3/4084 ,  G06T5/20 ,  G06T2200/28

    摘要： This invention relates generally to hardware for scaling and filtering video data and more specifically to algorithms and techniques for accelerating scaling and filtering operations on digital video data. The hardware is designed so that scaling and filtering operations are combined and performed simultaneously where possible to speed manipulation of the video data. Efficient design of the system allows memory buffers and logic gates to be shared or eliminated to reduce the size, cost and power requirements of the hardware implementation.

    摘要翻译： 本发明一般涉及用于缩放和过滤视频数据的硬件，更具体地涉及用于加速数字视频数据的缩放和滤波操作的算法和技术。 硬件被设计成使得缩放和滤波操作在可能的情况下同时组合和执行以加速对视频数据的操纵。 系统的高效设计允许共享或消除存储器缓冲器和逻辑门以减小硬件实现的尺寸，成本和功率要求。

    Edge adaptive demosaic system and method
    4.
    发明授权
    Edge adaptive demosaic system and method 失效

    公开(公告)号：US07376288B2

    公开(公告)日：2008-05-20

    申请号：US11949345

    申请日：2007-12-03

    申请人： Qifan Huang ,  Li Sha

    发明人： Qifan Huang ,  Li Sha

    IPC分类号： G06K9/32 ,  G06K9/36 ,  H04N3/14

    CPC分类号： H04N9/045 ,  G06T3/4015 ,  H04N2209/046

    摘要： A demosaic system and method that supports multiple CFA pattern inputs is disclosed. The demosaic system is capable of handling both RGB Bayer input and CMYG input and perform demosaic operations on both inputs to recover full-color images from the raw input images. The system uses a variable number gradient demosiac process. The process uses a 5×5 neighborhood of sensor pixel data centered at the pixel under consideration. The process calculates a set of gradients corresponding to different directions within the neighborhood of the sensor pixel data. A threshold value is determined and a subset of gradients is selected from the set of gradients that fall below the threshold value. The system calculates estimation values for the missing color value and the actual measured center pixel color value obtained from the sensor data on directions that are within the subset of gradients below the threshold. The system then determines the sum of the missing color estimation values and the sum of the actual center pixel color estimation values. The system interpolates the missing color value by using the average difference of the summed estimation values for the missing color and the summed estimation values for the actual center measured pixel value from the sensor data.

    Edge adaptive demosaic system and method
    5.
    发明授权
    Edge adaptive demosaic system and method 失效
    边缘自适应去镶嵌系统和方法

    公开(公告)号：US07333678B1

    公开(公告)日：2008-02-19

    申请号：US10850778

    申请日：2004-05-20

    申请人： Qifan Huang ,  Li Sha

    发明人： Qifan Huang ,  Li Sha

    IPC分类号： G06K9/32 ,  G06K9/36 ,  H04N3/14

    CPC分类号： H04N9/045 ,  H04N2209/046

    摘要： A demosaic system and method that supports multiple CFA pattern inputs is disclosed. The demosaic system is capable of handling both RGB Bayer input and CMYG input and perform demosaic operations on both inputs to recover full-color images from the raw input images. The system uses a variable number gradient demosiac process. The process uses a 5×5 neighborhood of sensor pixel data centered at the pixel under consideration. The process calculates a set of gradients corresponding to different directions within the neighborhood of the sensor pixel data. A threshold value is determined and a subset of gradients is selected from the set of gradients that fall below the threshold value. The system calculates estimation values for the missing color value and the actual measured center pixel color value obtained from the sensor data on directions that are within the subset of gradients below the threshold. The system then determines the sum of the missing color estimation values and the sum of the actual center pixel color estimation values. The system interpolates the missing color value by using the average difference of the summed estimation values for the missing color and the summed estimation values for the actual center measured pixel value from the sensor data.

    摘要翻译： 公开了一种支持多个CFA模式输入的去马赛克系统和方法。 德马赛克系统能够处理RGB拜耳输入和CMYG输入，并对两个输入进行去马赛克操作，以从原始输入图像中恢复全色图像。 系统使用可变数量梯度demosiac过程。 该过程使用在所考虑的像素的中心的传感器像素数据的5×5邻域。 该过程计算对应于传感器像素数据附近的不同方向的一组梯度。 确定阈值，并且从落在阈值以下的梯度集合中选择梯度子集。 系统计算从传感器数据获得的缺失颜色值和实际测量的中心像素颜色值的估计值，该方向在低于阈值的梯度子集内。 然后，系统确定缺失颜色估计值和实际中心像素颜色估计值之和的和。 系统通过使用缺失颜色的相加估计值与传感器数据中实际中心测量像素值的相加估计值的平均差来内插缺失色值。

    DMA latency compensation with scaling line buffer
    6.
    发明申请
    DMA latency compensation with scaling line buffer 审中-公开
    使用缩放行缓冲区的DMA延迟补偿

    公开(公告)号：US20060125835A1

    公开(公告)日：2006-06-15

    申请号：US11090465

    申请日：2005-03-25

    申请人： Li Sha ,  Qifan Huang

    发明人： Li Sha ,  Qifan Huang

    IPC分类号： G09G5/36

    CPC分类号： G09G5/395 ,  G09G5/391

    摘要： A video processing system configured with DMA latency compensation is disclosed. This compensation helps minimize or otherwise mitigate shortages of data to the display, thereby improving the quality of displayed video. A relatively small line buffer is used to stage data for video processing. Should an underflow of data occur (where the buffer reading process is ahead of the buffer writing process), data is read from the previous line buffer. This not only prevents shortages of data to the display, but also provides data that is more likely to be relevant to the actual scene being displayed (as compared to random data).

    摘要翻译： 公开了配置有DMA等待时间补偿的视频处理系统。 该补偿有助于最小化或以其他方式减少数据到显示器的短缺，从而提高显示视频的质量。 使用相对小的行缓冲器来进行视频处理的数据。 如果数据发生下溢（缓冲区读取过程在缓冲区写入过程之前），则从前一行缓冲区读取数据。 这不仅可以防止显示数据的短缺，还可以提供更可能与正在显示的实际场景相关的数据（与随机数据相比）。

    METHOD AND SYSTEM FOR SCALING, FILTERING, SCAN CONVERSION, PANORAMIC SCALING, YC ADJUSTMENT, AND COLOR CONVERSION IN A DISPLAY CONTROLLER
    7.
    发明申请
    METHOD AND SYSTEM FOR SCALING, FILTERING, SCAN CONVERSION, PANORAMIC SCALING, YC ADJUSTMENT, AND COLOR CONVERSION IN A DISPLAY CONTROLLER 审中-公开
    在显示控制器中进行缩放，过滤，扫描转换，全景缩放，YC调整和颜色转换的方法和系统

    公开(公告)号：US20090268086A1

    公开(公告)日：2009-10-29

    申请号：US12189721

    申请日：2008-08-11

    申请人： Yu T. Tian ,  Qifan Huang ,  Li Sha

    发明人： Yu T. Tian ,  Qifan Huang ,  Li Sha

    IPC分类号： H04N7/01

    CPC分类号： G06T3/4084 ,  G06T5/20 ,  G06T2200/28

    摘要： Techniques for performing panoramic scaling are disclosed that reduce visible distortion in a panoramic image. Further, techniques for performing combined YC adjustment and color conversion are disclosed that reduce the size and power requirements of video manipulation hardware by reducing the number of logic gates and memory buffers required when YC adjustment and color conversion are implemented as separate operations.

    摘要翻译： 公开了用于执行全景缩放的技术，其减少全景图像中的可见失真。 此外，公开了用于执行组合YC调整和颜色转换的技术，通过减少当将YC调整和颜色转换实现为单独操作时所需的逻辑门数和存储缓冲器的数量来减小视频操纵硬件的尺寸和功率要求。

    PROCESSING UNIT WITH CROSS-COUPLED ALUS/ACCUMULATORS AND INPUT DATA FEEDBACK STRUCTURE INCLUDING CONSTANT GENERATOR AND BYPASS TO REDUCE MEMORY CONTENTION
    10.
    发明申请
    PROCESSING UNIT WITH CROSS-COUPLED ALUS/ACCUMULATORS AND INPUT DATA FEEDBACK STRUCTURE INCLUDING CONSTANT GENERATOR AND BYPASS TO REDUCE MEMORY CONTENTION 失效
    具有交叉耦合ALUS /累加器的加工单元和输入数据反馈结构，包括恒定发电机和旁路以减少存储器内容

    公开(公告)号：US20050228970A1

    公开(公告)日：2005-10-13

    申请号：US10209109

    申请日：2002-07-30

    申请人： Shuhua Xiang ,  Li Sha ,  Ping Zhu ,  Hongjun Yuan ,  Wei Ni

    发明人： Shuhua Xiang ,  Li Sha ,  Ping Zhu ,  Hongjun Yuan ,  Wei Ni

    IPC分类号： G06F7/57 ,  G06F9/38 ,  G06F15/00

    CPC分类号： G06F9/3867 ,  G06F7/57 ,  G06F9/3824 ,  G06F9/3826 ,  G06F9/3885

    摘要： A processing system includes an arithmetic logic unit (ALU) sub-system that allows data associated with a prior instruction to be preserved for use with a next instruction or subsequent instruction without having to reload the value using an intermediate register. The ALU sub-system includes a pair of ALUs communicatively cross-coupled with a pair of accumulators. The processing system also includes a data selector coupled to the ALU sub-system for use with memory contention prediction. The data selector includes a constant generator that controls storage of data associated with a previous instruction in a bypass element, and a selector to choose between data from a databus element and data stored in the bypass element.

    摘要翻译： 处理系统包括算术逻辑单元（ALU）子系统，其允许与先前指令相关联的数据被保留以用于下一个指令或后续指令，而不必使用中间寄存器重新加载该值。 ALU子系统包括与一对蓄能器通信地交叉耦合的一对ALU。 处理系统还包括耦合到ALU子系统以与存储器争用预测一起使用的数据选择器。 数据选择器包括恒定发生器，其控制与旁路元件中的先前指令相关联的数据的存储，以及选择器，用于在数据总线元件的数据和存储在旁路元件中的数据之间进行选择。