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61. 发明授权

US06731807B1 Method of compressing and/or decompressing a data set using significance mapping 失效
标题翻译：使用重要性映射压缩和/或解压缩数据集的方法
公开(公告)号：US06731807B1
公开(公告)日：2004-05-04
申请号：US09151336
申请日：1998-09-11
申请人： Edward A. Pazmino , Tinku Acharya
发明人： Edward A. Pazmino , Tinku Acharya
IPC分类号： G06K936
CPC分类号： H04N19/124 , H03M7/3082 , H04N19/14 , H04N19/94
摘要： Briefly, in accordance with one embodiment on the invention, a method of compressing a data set includes the following. In multiple passes, each data signal in the data set is categorized into a category of a predetermined set, and, for selected categories of the predetermined set, the data signals for that category are coded using a codebook for that category. Briefly, in accordance with another embodiment of the invention, a method of decompressing a compressed data set includes the following. For compressed data signals in the data set in one category of a predetermined set of categories, a signal associated with the particular category is employed for the compressed data signal, and, for selected categories of the predetermined set, the compressed data signals for that category are decoded using a codebook for that category.
摘要翻译：简而言之，根据本发明的一个实施例，压缩数据集的方法包括以下。在多遍中，数据集中的每个数据信号被分类为预定集合的类别，并且对于预定集合的所选类别，使用该类别的码本对该类别的数据信号进行编码。简而言之，根据在本发明的另一个实施例中，解压缩数据集的方法包括以下。对于预定类别的一个类别中的数据集合中的压缩数据信号，对于压缩数据信号采用与特定类别相关联的信号，并且对于预定集合的选定类别，针对该类别的压缩数据信号使用该类别的码本解码。

62. 发明授权

US06731706B1 Square root raised cosine symmetric filter for mobile telecommunications 有权
标题翻译：用于移动电信的平方根升余弦对称滤波器
公开(公告)号：US06731706B1
公开(公告)日：2004-05-04
申请号：US09429058
申请日：1999-10-29
申请人： Tinku Acharya , George J. Miao
发明人： Tinku Acharya , George J. Miao
IPC分类号： H04B110
CPC分类号： H03H17/06 , H03H17/0283
摘要： A symmetric discrete-time square-root-raised-cosine filter may be utilized to process a serial input signal and to produce an output square in each clock cycle. The filter may be adapted to decrease the computational complexity of the resulting calculations, making the filter amenable to use in power sensitive applications and in those situations where the available processor's performance is relatively limited.
摘要翻译：对称的离散时间平方根升余弦滤波器可用于处理串行输入信号并且在每个时钟周期中产生输出平方。滤波器可以适于降低所得计算的计算复杂度，使得滤波器适用于功率敏感应用以及可用处理器性能相对有限的那些情况。

63. 发明授权

US06697534B1 Method and apparatus for adaptively sharpening local image content of an image 失效
标题翻译：用于自适应地锐化图像的局部图像内容的方法和装置
公开(公告)号：US06697534B1
公开(公告)日：2004-02-24
申请号：US09328935
申请日：1999-06-09
申请人： Yap-Peng Tan , Ping-Sing Tsai , Tinku Acharya
发明人： Yap-Peng Tan , Ping-Sing Tsai , Tinku Acharya
IPC分类号： G06T500
CPC分类号： G06T5/20 , G06T5/003 , G06T2207/20012 , G06T2207/20192
摘要： Briefly, in accordance with one embodiment of the invention, a method of sharpening an image includes the following. A crispening parameter is adaptively computed for a local region of a captured image based, at least in part, on a measure of the local contrast and the local brightness. A kernel is applied to the local region of the captured image using the adaptively computed crispening parameter.
摘要翻译：简而言之，根据本发明的一个实施例，一种锐化图像的方法包括以下。至少部分地基于局部对比度和局部亮度的量度来自适应地计算捕获图像的局部区域的克隆参数。使用自适应计算的克隆参数将内核应用于捕获图像的局部区域。

64. 发明授权

US06694061B1 Memory based VLSI architecture for image compression 失效
标题翻译：用于图像压缩的基于内存的VLSI架构
公开(公告)号：US06694061B1
公开(公告)日：2004-02-17
申请号：US08885415
申请日：1997-06-30
申请人： Tinku Acharya
发明人： Tinku Acharya
IPC分类号： G06K936
CPC分类号： G06T9/004
摘要： An image compression apparatus is discussed that includes a first look-up table providing a quantized code, a second look-up table providing the length of that code, and a predictive coding circuit which generates an address for indexed those look-up tables.
摘要翻译：讨论了一种图像压缩装置，其包括提供量化码的第一查找表，提供该码的长度的第二查找表，以及生成用于索引这些查找表的地址的预测编码电路。

65. 发明授权

US06636167B1 Method of generating Huffman code length information 有权
公开(公告)号：US06636167B1
公开(公告)日：2003-10-21
申请号：US09704392
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
摘要： Embodiments of a method of generating Huffman code length information 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.

66. 发明授权

US06625308B1 Fuzzy distinction based thresholding technique for image segmentation 失效
标题翻译：基于模糊区分的图像分割阈值技术
公开(公告)号：US06625308B1
公开(公告)日：2003-09-23
申请号：US09393017
申请日：1999-09-10
申请人： Tinku Acharya , Ajay K. Ray , A. K. V. Subba Rao
发明人： Tinku Acharya , Ajay K. Ray , A. K. V. Subba Rao
IPC分类号： G06K900
CPC分类号： G06K9/38 , G06T7/11 , G06T7/136 , G06T7/143 , G06T2207/10016 , Y10S706/90
摘要： Embodiments of a fuzzy distinction based thresholding technique for image segmentation are disclosed. In one embodiment, at least one signal value level of the image is determined along which to divide a fuzzy histogram, the histogram being based, at least in part, on the image. The signal value represents a value which produces a divided fuzzy histogram with an extreme value of one of distinctiveness and fuzziness based on a measure of multidimensional distance between measurement distributions and their respective complements. The image is then segmented using the at least one signal value.
摘要翻译：公开了用于图像分割的基于模糊区分的阈值技术的实施例。在一个实施例中，确定图像的至少一个信号值电平，沿着该信号值级别划分模糊直方图，直方图至少部分地基于图像。信号值表示基于测量分布与它们各自的补码之间的多维距离的度量，产生具有独特性和模糊性的极值的分割模糊直方图的值。然后使用至少一个信号值来分割图像。

67. 发明授权

US06535648B1 Mathematical model for gray scale and contrast enhancement of a digital image 失效
标题翻译：数字图像灰度和对比度增强的数学模型
公开(公告)号：US06535648B1
公开(公告)日：2003-03-18
申请号：US09207753
申请日：1998-12-08
申请人： Tinku Acharya
发明人： Tinku Acharya
IPC分类号： H04N146
CPC分类号： H04N5/20 , G06T5/007
摘要： What is disclosed is a method that specifies identifying a category to which a pixel belongs and performing integrated contrast enhancement and gray scale adjustment on the pixel in accordance with the identified category. These enhanced/adjusted values may be looked up in a table constructed to contain a mapping for all such values.
摘要翻译：所公开的是指定识别像素所属的类别并根据所识别的类别对像素执行集成的对比度增强和灰度调整的方法。可以在构造为包含所有这些值的映射的表中查找这些增强/调整的值。

68. 发明授权

US06392699B1 Integrated color interpolation and color space conversion algorithm from 8-bit bayer pattern RGB color space to 12-bit YCrCb color space 失效
标题翻译：集成颜色插值和色彩空间转换算法，从8位拜耳图案RGB色彩空间到12位YCrCb颜色空间
公开(公告)号：US06392699B1
公开(公告)日：2002-05-21
申请号：US09034625
申请日：1998-03-04
申请人： Tinku Acharya
发明人： Tinku Acharya
IPC分类号： H04N314
CPC分类号： G06T3/4015 , G06T3/4007 , H04N9/045 , H04N9/67
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。

69. 发明授权

US06285796B1 Pseudo-fixed length image compression scheme 失效
标题翻译：伪固定长度图像压缩方案
公开(公告)号：US06285796B1
公开(公告)日：2001-09-04
申请号：US08963335
申请日：1997-11-03
申请人： Tinku Acharya , Judith A. Goldstein , Michael Keith , Po Yuan
发明人： Tinku Acharya , Judith A. Goldstein , Michael Keith , Po Yuan
IPC分类号： H04N141
CPC分类号： H04N19/50
摘要： A method and apparatus for efficient image encoding in a predictive coding or other error image based image compression scheme, a pseudo-fixed length code is employed to convert certain calculated error values into codewords. The code is pseudo-fixed length since the length of codewords is fixed for a particular range of values and then increased for the next range. The length of codewords is not needed in decoding by choosing prefixes that uniquely distinguish codewords when packed together. As a result, efficient and quick image encoding/decoding is made possible.
摘要翻译：一种用于在预测编码或其他基于误差图像的图像压缩方案中有效图像编码的方法和装置，采用伪固定长度码将某些计算的误差值转换为码字。代码是伪固定长度，因为码字的长度对于特定值的范围是固定的，然后在下一个范围内增加。通过选择在打包在一起时唯一区分码字的前缀，解码中不需要码字的长度。结果，有效和快速的图像编码/解码成为可能。

70. 发明授权

US06236765B1 DWT-based up-sampling algorithm suitable for image display in an LCD panel 有权
标题翻译：基于DWT的上采样算法适用于LCD面板中的图像显示
公开(公告)号：US06236765B1
公开(公告)日：2001-05-22
申请号：US09129728
申请日：1998-08-05
申请人： Tinku Acharya
发明人： Tinku Acharya
IPC分类号： G06K936
CPC分类号： G06T3/4084
摘要： A method comprising constructing virtual (Discrete Wavelet Transform) DWT sub-bands; from an image without 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. Alternatively, an apparatus comprising an interface configured to communicate image data, and an up-sampling unit, the up-sampling unit coupled to the interface to receive the image data, the up-sampling unit configured to construct virtual sub-band input data from the image data, the up-sampling unit configured to perform an inverse DWT upon the input data generating an up-sampled image therefrom. 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 without performing the DWT, 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：一种包括构建虚拟（离散小波变换）DWT子带的方法; 从不执行DWT并且然后对虚拟子带应用反向DWT的图像，反向DWT的结果表示图像的上采样版本。或者，包括被配置为传送图像数据的接口和上采样单元的装置，所述上采样单元耦合到所述接口以接收所述图像数据，所述上采样单元被配置为构建虚拟子带输入数据，所述图像数据，所述上采样单元被配置为根据从其生成上采样图像的输入数据执行逆DWT。在替代实施例中，一种包括具有指令的计算机可读介质的装置，当执行执行时，执行从图像构建虚拟（离散小波变换）DWT子带而不执行DWT，在虚拟子带上应用反DWT，结果的逆DWT表示图像的上采样版本。

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