公开(公告)号：US06563439B1

公开(公告)日：2003-05-13

申请号：US09704380

申请日：2000-10-31

申请人： Tinku Acharya ,  Ping-Sing Tsai

发明人： Tinku Acharya ,  Ping-Sing Tsai

IPC分类号： H03M740

CPC分类号： H03M7/40 ,  H03M7/42

摘要： Embodiments of a method of performing Huffman decoding are disclosed. In one such embodiment, a data structure is employed, although, of course, the invention is not limited in scope to the particular embodiments disclosed.

摘要翻译： 公开了执行霍夫曼解码的方法的实施例。 在一个这样的实施例中，采用数据结构，但是当然，本发明的范围不限于所公开的特定实施例。

公开(公告)号：US06381357B1

公开(公告)日：2002-04-30

申请号：US09258636

申请日：1999-02-26

申请人： Yap-Peng Tan ,  Tinku Acharya

发明人： Yap-Peng Tan ,  Tinku Acharya

IPC分类号： G06K900

CPC分类号： H04N5/367

摘要： What is disclosed is a method including downloading a sequence of images from an image sensor, and then marking on a map a pixel location of the sensor defective if a Defective Vote score exceeds a first threshold, the score tallied over all captured images. The defective pixel map is stored on a host computer, which performs the defective pixel detection on behalf of the sensor, rather than directly on the device incorporating the image sensor.

摘要翻译： 所公开的是一种方法，包括从图像传感器下载一系列图像，然后在地图上标记传感器的像素位置，如果缺陷投票得分超过第一阈值，则得分在所有拍摄图像上计数。 缺陷像素图存储在主计算机上，主计算机代表传感器执行缺陷像素检测，而不是直接在包含图像传感器的设备上执行缺陷像素检测。

公开(公告)号：US06377280B1

公开(公告)日：2002-04-23

申请号：US09292763

申请日：1999-04-14

申请人： Tinku Acharya ,  Ping-Sing Tsai

发明人： Tinku Acharya ,  Ping-Sing Tsai

IPC分类号： G06K936

CPC分类号： G06T3/403 ,  G06T3/4084

摘要： A method comprising constructing virtual (Discrete Wavelet Transform) DWT sub-bands from an image by performing the DWT and then applying an inverse DWT upon the virtual sub-bands, the result of the inverse DWT representing an up-sampled version of the image. In an alternate embodiment, an apparatus comprising a computer readable medium having instructions which when executed perform constructing virtual (Discrete Wavelet Transform) DWT sub-bands from an image by performing a DWT upon the image, applying an inverse DWT upon the virtual sub-bands, the result of the inverse DWT representing an up-sampled version of the image.

摘要翻译： 一种方法，包括通过执行DWT并且然后在虚拟子带上施加逆DWT来构建来自图像的虚拟（离散小波变换）DWT子带，反向DWT的结果表示图像的上采样版本。 在替代实施例中，一种装置，包括具有指令的计算机可读介质，所述指令当被执行时通过在图像上执行DWT从图像构建虚拟（离散小波变换）DWT子带，将虚拟子带应用于虚拟子带 ，反向DWT的结果表示图像的上采样版本。

公开(公告)号：US06356276B1

公开(公告)日：2002-03-12

申请号：US09040806

申请日：1998-03-18

申请人： Tinku Acharya

发明人： Tinku Acharya

IPC分类号： G09G504

CPC分类号： G06T3/4015 ,  H04N9/045

摘要： An integrated color interpolation and color space conversion technique and apparatus. A raw image that is arranged in a Bayer pattern where each pixel has only one of the color components needed to form a full color resolution pixel may be converted using this technique directly to a YCrCb image space without any intermediate conversion or interpolation steps. Specifically, in one instance, an 8-bit Bayer pattern raw image may be converted directly to a 12-bit YCrCb space in a single step approach. Such an integrated technique may more readily and inexpensively implemented in hardware such as on a digital camera, or in software.

摘要翻译： 一种集成颜色插值和色彩空间转换技术和装置。 以Bayer图案布置的原始图像，其中每个像素仅具有形成全色分辨率像素所需的颜色分量之一，可以使用该技术直接转换到YCrCb图像空间，而无需任何中间转换或插值步骤。 具体来说，在一种情况下，8位拜耳图案原始图像可以以单步方式直接转换为12位YCrCb空间。 这样的集成技术可以在诸如数字照相机或软件的硬件中更容易和更便宜地实现。

公开(公告)号：US06229578B1

公开(公告)日：2001-05-08

申请号：US08986761

申请日：1997-12-08

申请人： Tinku Acharya ,  Ping-Sing Tsai

发明人： Tinku Acharya ,  Ping-Sing Tsai

IPC分类号： H04N964

CPC分类号： G06T7/12 ,  G06T5/002 ,  G06T2207/10024 ,  G06T2207/20192

摘要： What is disclosed is a method for removing noise by distinguishing between edge and non-edge pixels and applying a first noise removal technique to pixels classified as non-edge pixels and a second noise removal technique to pixels classified as edge pixels. The methodology operates on images while in a Color Filter Array (CFA) domain prior to color interpolation, and uses techniques suited to the classification, whether edge or non-edge.

摘要翻译： 所公开的是通过区分边缘像素和非边缘像素并且将分类为非边缘像素的像素和第二噪声去除技术应用于分类为边缘像素的像素的第一噪声去除技术来去除噪声的方法。 该方法在颜色插值之前在彩色滤镜阵列（CFA）域中对图像进行操作，并使用适合分类的技术，无论是边缘还是非边缘。

公开(公告)号：US06195026B1

公开(公告)日：2001-02-27

申请号：US09152703

申请日：1998-09-14

申请人： Tinku Acharya

发明人： Tinku Acharya

IPC分类号： H03M700

CPC分类号： G06T9/005 ,  H03M7/40

摘要： A method comprising entropy encoding into bits a set of data values, and packing into storage the entropy encoded bits by reversing the bits of words with unknown length and keeping in blocks the words with known lengths. For instance, in an entropy encoded data set that uses both Huffman coding and zero run coding, the class code may be reversed in bit order from right to left rather left to right while the words of known length such as the zero run code and Huffman pointer are stored left to right in blocks. This data arrangement is particularly useful in an MMX based machine.

摘要翻译： 一种方法，包括将位熵编码成一组数据值，并且通过反转具有未知长度的单词的比特并且以块形式保持具有已知长度的单词，将熵编码比特打包到存储中。 例如，在使用霍夫曼编码和零运行编码的熵编码数据集中，类代码可以从右到左而不是从左到右以比特顺序颠倒，而具有已知长度的字，例如零运行代码和霍夫曼 指针从左到右存储在块中。 该数据排列在基于MMX的机器中特别有用。

公开(公告)号：US6124811A

公开(公告)日：2000-09-26

申请号：US109475

申请日：1998-07-02

申请人： Tinku Acharya ,  Lina J. Karam ,  Francescomaria Marino

发明人： Tinku Acharya ,  Lina J. Karam ,  Francescomaria Marino

IPC分类号： G06T9/00 ,  H03M7/40 ,  H03M7/46 ,  H03M7/48 ,  H04N1/41 ,  H04N7/26 ,  H04N7/32 ,  H03M7/30

CPC分类号： H03M7/46 ,  H03M7/40 ,  H04N19/186 ,  H04N19/61 ,  H04N19/63 ,  H04N19/93 ,  H04N19/10 ,  H04N19/13

摘要： What is disclosed is a method that allows a fixed length codeword and flag to serve as a structure for encoding large run lengths, a sequence of such structures representing the number of zeroes between two non-zero values in a data set to be encoded. Also disclosed is an adaptive encoding technique that determines an encoding method suitable with the entropy characteristics of the data to be encoded. An architecture is disclosed which allows the size of the fixed length to be varied, if needed. This architecture includes a plurality of logic networks coupled to a single counter, each of which may be enabled depending on the desired codeword size.

摘要翻译： 所公开的是允许固定长度的码字和标志用作编码大行程长度的结构的方法，这种结构的序列表示要编码的数据集中的两个非零值之间的零数。 还公开了一种自适应编码技术，其确定适合于要编码的数据的熵特性的编码方法。 如果需要，公开了允许固定长度的大小变化的架构。 该架构包括耦合到单个计数器的多个逻辑网络，每个逻辑网络可以根据期望的码字大小启用。

公开(公告)号：US5995210A

公开(公告)日：1999-11-30

申请号：US130245

申请日：1998-08-06

申请人： Tinku Acharya

发明人： Tinku Acharya

IPC分类号： G06F17/14 ,  G01N21/00

CPC分类号： G06F17/14

摘要： The invention provides an integrated systolic architecture which can perform both forward and inverse Discrete Wavelet Transforms with a minimum of complexity. A plurality of processing cells, each having an adder and a multiplier, are coupled to a set of multiplexers and delay elements to selectively receive a single input datastream in the forward DWT mode and two datastreams in the inverse DWT mode. In the forward DWT mode, the integrated architecture decomposes the input datastream into two output sequences--a high frequency sub-band output and a low frequency sub-band output. In the inverse DWT mode, the integrated architecture reconstructs the original input sequence by outputting even terms and odd terms on alternating clock cycles. As a result, the architecture can achieve 100% utilization and is suitable to be implemented in VLSI circuitry.

摘要翻译： 本发明提供了一种集成的收缩结构，其可以以最小的复杂度执行正向和反向离散小波变换。 多个具有加法器和乘法器的处理单元耦合到一组多路复用器和延迟元件，以选择性地接收正向DWT模式中的单个输入数据流，并且在反向DWT模式中接收两个数据流。 在正向DWT模式下，集成架构将输入数据流分解为两个输出序列，即高频子带输出和低频子带输出。 在逆DWT模式中，集成架构通过在交替的时钟周期上输出偶数项和奇数项来重建原始输入序列。 因此，架构可以实现100％的利用率，并且适合在VLSI电路中实现。

公开(公告)号：US07317816B2

公开(公告)日：2008-01-08

申请号：US10643672

申请日：2003-08-19

申请人： Ajoy K. Ray ,  Ranjit K. Mishra ,  Tinku Acharya

发明人： Ajoy K. Ray ,  Ranjit K. Mishra ,  Tinku Acharya

IPC分类号： G06K9/00

CPC分类号： G06K9/00281

摘要： In one embodiment, the present invention includes a method to use active contours to detect image boundaries of a first view and a second view of a human face, and mark a first set of fiducial points on the first view and a second set of fiducial points on the second view. Using the fiducial points, feature vectors may be calculated and stored in a database for later comparison with a query image.

摘要翻译： 在一个实施例中，本发明包括使用主动轮廓来检测人脸的第一视图和第二视图的图像边界的方法，并且标记第一视图上的第一组基准点和第二组基准点 在第二个观点。 使用基准点，可以计算特征向量并存储在数据库中，以便稍后与查询图像进行比较。

公开(公告)号：US20070090180A1

公开(公告)日：2007-04-26

申请号：US10820906

申请日：2004-04-08

申请人： Andrew Griffis ,  Roger Karl Undhagen ,  Tinku Acharya

发明人： Andrew Griffis ,  Roger Karl Undhagen ,  Tinku Acharya

IPC分类号： G06F7/00 ,  G06F17/00 ,  G06K7/00

CPC分类号： G06Q10/06

摘要： A system for use in managing activity of interest within an enterprise is provided. The system comprises a computer configured to (i) receive sensor data that is related to key activity to the enterprise, such key activity comprising a type of object and the object's activity at a predetermined location associated with the enterprise, the sensor providing information from which an object's type and activity at the predetermined location can be derived, (ii) process the sensor data to produce output that is related to key activity to the enterprise, and (ii) store the information extracted from the processed data in a suitable manner for knowledge extraction and future analysis. According to a preferred embodiment, the object is human, machine or vehicular, and the computer is further configured to correlate sensor data to key activity to the enterprise and the output includes feedback data based on the correlation.

摘要翻译： 提供了一种用于管理企业内感兴趣活动的系统。 该系统包括计算机，其被配置为（i）接收与企业的关键活动相关的传感器数据，这种关键活动包括在与企业相关联的预定位置处的对象类型和对象的活动，所述传感器提供信息 可以导出在预定位置处的对象的类型和活动，（ii）处理传感器数据以产生与企业的关键活动相关的输出，以及（ii）以适当的方式存储从处理数据中提取的信息 知识提取和未来分析。 根据一个优选实施例，该目标是人类，机器或车辆，并且计算机还被配置为将传感器数据与企业的关键活动相关联，并且输出包括基于相关性的反馈数据。