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1. 发明授权

US6160846A Apparatus and method for optimizing the rate control in a coding system 失效
标题翻译：用于优化编码系统中的速率控制的装置和方法
公开(公告)号：US6160846A
公开(公告)日：2000-12-12
申请号：US738228
申请日：1996-10-23
申请人： Tihao Chiang , Huifang Sun , Wilson Kwok , Max Chien , Ya-Qin Zhang
发明人： Tihao Chiang , Huifang Sun , Wilson Kwok , Max Chien , Ya-Qin Zhang
IPC分类号： H04N7/30 , G06T9/00 , H04N7/26 , H04N7/50
CPC分类号： H04N19/517 , H04N19/10 , H04N19/115 , H04N19/124 , H04N19/126 , H04N19/14 , H04N19/146 , H04N19/147 , H04N19/152 , H04N19/176 , H04N19/186 , H04N19/192 , H04N19/61 , H04N19/63 , H04N19/64
摘要： A method and apparatus for selecting a quantizer scale for each macroblock to maintain the overall quality of the video image while optimizing the coding rate. A quantizer scale is selected for each macroblock such that target bit rate for the picture is achieved while an optimal quantization scale ratio is maintained for successive macroblocks to produce a uniform visual quality over the entire picture. One embodiment applies the method to the frame level while another embodiment applies the method in conjunction with a wavelet transform.
摘要翻译：一种用于为每个宏块选择量化器尺度以在优化编码率的同时维持视频图像的整体质量的方法和装置。为每个宏块选择一个量化器标尺，以便实现图像的目标比特率，同时为连续的宏块保持最佳量化比例比，以在整个图像上产生均匀的视觉质量。一个实施例将该方法应用于帧级，而另一实施例将该方法应用于小波变换。

2. 发明授权

US06192081B1 Apparatus and method for selecting a coding mode in a block-based coding system 失效
标题翻译：用于在基于块的编码系统中选择编码模式的装置和方法
公开(公告)号：US06192081B1
公开(公告)日：2001-02-20
申请号：US09549244
申请日：1995-10-26
申请人： Tihao Chiang , Max Chien , Wilson Kwok , Huifang Sun
发明人： Tihao Chiang , Max Chien , Wilson Kwok , Huifang Sun
IPC分类号： H04N736
CPC分类号： H04N19/567 , H04N19/107 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/192 , H04N19/51 , H04N19/61
摘要： An apparatus and concomitant method for selecting a macroblock coding mode based upon the quantization scale selected for the macroblock. The total number of bits needed to code each macroblock consists of two parts, bits needed for coding motion vectors and bits for coding the predictive residual. The number of bits for coding the motion vectors is generally obtained from a look-up table. The number of bits for coding the predictive residual is obtained by an estimation which assumes that the number of bits for encoding the predictive residuals is directly proportional to the value of its variance and inversely proportional to the value of quantizer steps (quantizer scale). Using this estimation, the total number of bits necessary to code a macroblock is calculated and compared for each coding mode. By selecting the coding mode with the least number of bits, a near-optimal solution of low complexity for practical implementation is acquired.
摘要翻译：一种用于基于为宏块选择的量化尺度来选择宏块编码模式的装置和并发方法。编码每个宏块所需的总位数由两部分组成：编码运动矢量所需的位和用于编码预测残差的位。用于编码运动矢量的比特数通常从查找表中获得。用于对预测残差进行编码的比特数是通过估计假定用于编码预测残差的比特数与其方差的值成正比并与量化器步长（量化比例）成反比的方式获得的。使用该估计，对于每个编码模式，计算并比较对宏块进行编码所需的总位数。通过选择具有最少位数的编码模式，获得了用于实际实现的低复杂度的近似最优解。

3. 发明授权

US5621467A Temporal-spatial error concealment apparatus and method for video signal processors 失效
标题翻译：视频信号处理器的时空错误隐藏装置和方法
公开(公告)号：US5621467A
公开(公告)日：1997-04-15
申请号：US389524
申请日：1995-02-16
申请人： Max Chien , HuiFang Sun , Wilson Kwok
发明人： Max Chien , HuiFang Sun , Wilson Kwok
IPC分类号： H04N5/94 , H03M13/00 , H04N9/88 , H04N19/895 , H04N7/68
CPC分类号： H04N19/895
摘要： A video decompression system includes block error concealment means for generating substitute data for lost blocks of pixel data. An interpolator generates both spatially and temporally interpolated or predicted blocks of data for concealing a lost block. Pixel data in the respective blocks of spatially and interpolated data are transformed to coefficients representing frequency spectra. A substitute block of coefficients is assembled from coefficients from both the transformed blocks, according to a predetermined criteria. The substitute block is transformed back to the spatial domain for substitution of lost pixel values.
摘要翻译：视频解压缩系统包括块错误隐藏装置，用于生成丢失的像素数据块的替代数据。内插器生成用于隐藏丢失块的空间和时间内插或预测数据块。空间和内插数据的相应块中的像素数据被变换成表示频谱的系数。系数的替代块根据预定标准从来自两个变换块的系数组装。替代块被转换回空间域以替代丢失的像素值。

4. 发明授权

US5889561A Method and apparatus for scaling a compressed video bitstream 失效
标题翻译：用于缩放压缩视频比特流的方法和装置
公开(公告)号：US5889561A
公开(公告)日：1999-03-30
申请号：US334282
申请日：1994-11-04
申请人： Wilson Kwok , Joel Walter Zdepski , Huifang Sun
发明人： Wilson Kwok , Joel Walter Zdepski , Huifang Sun
IPC分类号： H04N5/765 , G06T9/00 , H04N5/92 , H04N7/26 , H04N7/50 , H04N7/18
CPC分类号： H04N19/40 , H04N19/149 , H04N19/15 , H04N19/61
摘要： A method and apparatus for scaling the bitstream of a compressed video signal includes partial decoding hardware (38, 41) to permit excising of higher frequency AC DCT coefficients or re-quantizing quantized data with a coarser quantization factor. The scaling is performed on a block (macroblock) basis in a manner which linearly scales the amount of compressed data per block. An analyzer (40) generates a profile of cumulative partially decompressed data over a video frame, and bitstream scaling (42) is performed in a manner which insures that a profile of the scaled signal substantially comports with the profile of the original data.
摘要翻译：用于缩放压缩视频信号的比特流的方法和装置包括部分解码硬件（38,41），以允许更高频AC DCT系数的切换或者用较粗略的量化因子重新量化量化的数据。以块（宏块）为基础，以每个块的压缩数据的数量线性缩放的方式执行缩放。分析器（40）通过视频帧生成累积部分解压缩数据的简档，并且以确保缩放信号的简档基本上与原始数据的简档相一致的方式执行比特流缩放（42）。

5. 发明授权

US5365604A Error concealment apparatus for video signal processors 失效
标题翻译：视频信号处理器的错误隐藏装置
公开(公告)号：US5365604A
公开(公告)日：1994-11-15
申请号：US4358
申请日：1993-01-14
申请人： Wilson Kwok , Huifang Sun
发明人： Wilson Kwok , Huifang Sun
IPC分类号： H03M13/00 , H04N5/92 , H04N5/94 , H04N19/895 , G06K9/40
CPC分类号： H04N19/895
摘要： Error concealment apparatus for correcting errors in signals representing video images includes means for detecting image gradients in an area surrounding a lost block of image data. Circuitry responsive to these image gradients generates a plurality of blocks of directionally interpolated pixel values. The pixel values in the respective blocks of directionally interpolated pixel values are sorted according to amplitude, and then pixel values from mutually exclusive positions in the respective blocks are selected to form a block of pixel values for error concealment.
摘要翻译：用于校正表示视频图像的信号中的错误的错误隐藏装置包括用于检测围绕丢失的图像数据块的区域中的图像梯度的装置。响应于这些图像梯度的电路产生多个定向内插像素值的块。根据幅度对定向插值像素值的各个块中的像素值进行排序，然后选择各个块中来自互斥位置的像素值，以形成用于错误隐藏的像素值块。

6. 发明授权

US08687700B1 Method and/or apparatus for object detection utilizing cached and compressed classifier information 有权
标题翻译：利用缓存和压缩分类器信息的对象检测方法和/或装置
公开(公告)号：US08687700B1
公开(公告)日：2014-04-01
申请号：US12818396
申请日：2010-06-18
申请人： Wilson Kwok , Leslie D. Kohn
发明人： Wilson Kwok , Leslie D. Kohn
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： G06K9/6257 , G06K9/00281 , G06K9/00986
摘要： An apparatus comprising a classifier cache, a plurality of variable length decoder circuits and a core engine circuit. The classifier cache may be configured to store one or more compressed classifier streams. The plurality of variable length decoder circuits may each be configured to generate one or more uncompressed classifier streams in response to a respective one of the compressed classifier streams received from the classifier cache. The core engine circuit may be configured to detect one or more objects in a video signal by checking a portion of the video signal using the uncompressed classifier streams.
摘要翻译：一种包括分类器高速缓存，多个可变长度解码器电路和核心引擎电路的装置。分类器高速缓存可以被配置为存储一个或多个压缩分类器流。多个可变长度解码器电路可以各自被配置为响应于从分类器高速缓存接收的相应的一个压缩分类器流来生成一个或多个未压缩分类器流。核心引擎电路可以被配置为通过使用未压缩分类器流检查视频信号的一部分来检测视频信号中的一个或多个对象。

7. 发明授权

US07417670B1 Digital video camera with binning or skipping correction 有权
标题翻译：数码摄像机，具有合并或跳过校正功能
公开(公告)号：US07417670B1
公开(公告)日：2008-08-26
申请号：US11034034
申请日：2005-01-12
申请人： Elliot N. Linzer , Wilson Kwok
发明人： Elliot N. Linzer , Wilson Kwok
IPC分类号： H04N5/228
CPC分类号： H04N9/045 , H04N5/3456 , H04N5/3458 , H04N5/347 , H04N5/357
摘要： A method of operation for a video camera and the video camera are disclosed. The method generally comprises the steps of (A) sensing an optical signal with a plurality of pixels to generate an input signal, wherein the sensing is capable of a pixel reduction by at least one of binning the pixels and skipping some of the pixels and (B) processing the input signal in order to reduce artifacts caused by the pixel reduction to generate an output signal.
摘要翻译：公开了一种用于摄像机和摄像机的操作方法。该方法通常包括以下步骤：（A）用多个像素感测光信号以产生输入信号，其中该感测能够通过对像素进行合并和跳过某些像素中的至少一个来减少像素，并且（ B）处理输入信号，以便减少由像素减少引起的伪影以产生输出信号。

8. 发明授权

US09204113B1 Method and/or apparatus for implementing high dynamic range image processing in a video processing system 有权
标题翻译：用于在视频处理系统中实现高动态范围图像处理的方法和/或装置
公开(公告)号：US09204113B1
公开(公告)日：2015-12-01
申请号：US12824731
申请日：2010-06-28
申请人： Wilson Kwok , Leslie D. Kohn
发明人： Wilson Kwok , Leslie D. Kohn
IPC分类号： H04N7/12 , H04N11/02 , H04N19/44 , H04N7/52 , H04N5/235 , H04N5/355 , H04N19/98
CPC分类号： H04N5/2355 , H04N5/2353 , H04N5/355 , H04N7/12 , H04N7/52 , H04N9/74 , H04N19/98
摘要： An apparatus comprising a scaling circuit, a luma circuit and a blending circuit. The scaling circuit may generate a plurality of scaled frames in response to a first plurality of frames generated by a sensor. The first plurality of frames may have a first exposure. The luma circuit may generate an average luminance value for each of a plurality of processed pixels in each of a second of the plurality of frames generated by the sensor. The second of the plurality of frames may have a second exposure and each of the average luminance values is calculated based on a plurality of neighboring pixels in a neighborhood of the processed pixel.
摘要翻译：一种包括缩放电路，亮度电路和混合电路的装置。响应于由传感器产生的第一多个帧，缩放电路可以生成多个缩放的帧。第一多个帧可以具有第一曝光。亮度电路可以生成由传感器生成的多个帧中的每个第二帧中的多个处理像素中的每一个的平均亮度值。多个帧中的第二帧可以具有第二曝光，并且基于处理像素的附近的多个相邻像素来计算每个平均亮度值。

9. 发明授权

US07982788B1 Digital video camera with binning or skipping correction 有权
公开(公告)号：US07982788B1
公开(公告)日：2011-07-19
申请号：US12181499
申请日：2008-07-29
申请人： Elliot N. Linzer , Wilson Kwok
发明人： Elliot N. Linzer , Wilson Kwok
IPC分类号： H04N5/335
CPC分类号： H04N9/045 , H04N5/3456 , H04N5/3458 , H04N5/347 , H04N5/357
摘要： A method of generating video and a video camera are disclosed. The method generally includes the steps of (A) generating an input signal by sensing an optical signal using a plurality of first pixels, wherein (i) the sensing is capable of a pixel reduction by at least one of binning the first pixels and skipping some of the first pixels and (ii) a plurality of first spatial separations among the first pixels in the input signal are (a) uniform both horizontally and vertically while the pixel reduction is inactive and (b) non-uniform while the pixel reduction is active, (B) generating a plurality of second pixels in response to the first pixels such that a plurality of second spatial separations among the second pixels are uniform both horizontally and vertically while the pixel reduction is active and (C) generating an output signal carrying the second pixels.

10. 发明授权

US5929902A Method and apparatus for inverse telecine processing by fitting 3:2 pull-down patterns 失效
标题翻译：通过拟合3：2下拉模式反向电视电影处理的方法和装置
公开(公告)号：US5929902A
公开(公告)日：1999-07-27
申请号：US608038
申请日：1996-02-28
申请人： Wilson Kwok
发明人： Wilson Kwok
IPC分类号： H04N7/26 , H04N5/253
CPC分类号： H04N7/0112 , H04N7/0115
摘要： The invention provides methods and apparatus for performing inverse telecine processing on an input video frame sequence to be encoded. A method well-suited for detelecine of film-only telecine in MPEG-1 or MPEG-2 applications includes the steps of attempting to fit known 3:2 pulldown pattern phases to the entire sequence, determining a likely edit point in the sequence if a known phase cannot be fit to the sequence, and recursively repeating the fitting and edit point determination steps on subsequences until the entire sequence is partitioned into subsequences which can be fit with one of the known phases. The phases fit to the sequence or subsequences are then used to generate field-match indicators which are further processed to generate MPEG-1 or MPEG-2 compliant repeat field codes.
摘要翻译：本发明提供了对要编码的输入视频帧序列执行逆电视电影处理的方法和装置。适用于MPEG-1或MPEG-2应用中仅限于电影电视电影的方法包括以下步骤：尝试将已知的3：2下拉模式相位拟合到整个序列，确定序列中可能的编辑点，如果已知相位不能适合于该序列，并且递归地重复子序列上的拟合和编辑点确定步骤，直到整个序列被分割成可以与已知相位之一拟合的子序列。然后将适合于序列或子序列的相位用于产生场匹配指示符，其进一步被处理以产生符合MPEG-1或符合MPEG2标准的重复字段代码。

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