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    Apparatus and method for watermarking a digital image
    1.
    发明授权
    Apparatus and method for watermarking a digital image 有权

    公开(公告)号：US06996248B2

    公开(公告)日：2006-02-07

    申请号：US09881017

    申请日：2001-06-13

    申请人： Brian Fudge ,  Kadayam Thyagarajan ,  Eric Rosen

    发明人： Brian Fudge ,  Kadayam Thyagarajan ,  Eric Rosen

    IPC分类号： G06K9/00

    CPC分类号： G06T1/005 ,  G06T1/0085 ,  G06T2201/0052

    摘要： An apparatus for adding a watermark to a moving image as it is displayed comprises a watermark generator in which data representing a watermark is generated. The watermark contains at least one of location data and time data pertaining to the displaying of the moving image. The location and time data is protected by forward error encoding. The watermark also contains at least one of program data identifying the moving image and frame data unique in identifying each frame of the moving image. The program and time data is protected by scrambling. A watermark applicator applies the watermark data to image data representing substantially all of the moving image depending on a characteristic, such as amplitude, of the data.

    Apparatus and method for watermarking a digital image
    2.
    发明申请
    Apparatus and method for watermarking a digital image 有权

    公开(公告)号：US20060120562A1

    公开(公告)日：2006-06-08

    申请号：US11341098

    申请日：2006-01-27

    申请人： Brian Fudge ,  Kadayam Thyagarajan ,  Eric Rosen

    发明人： Brian Fudge ,  Kadayam Thyagarajan ,  Eric Rosen

    IPC分类号： G06K9/00

    CPC分类号： G06T1/005 ,  G06T1/0085 ,  G06T2201/0052

    摘要： An apparatus for adding a watermark to a moving image as it is displayed comprises a watermark generator in which data representing a watermark is generated. The watermark contains at least one of location data and time data pertaining to the displaying of the moving image. The location and time data is protected by forward error encoding. The watermark also contains at least one of program data identifying the moving image and frame data unique in identifying each frame of the moving image. The program and time data is protected by scrambling. A watermark applicator applies the watermark data to image data representing substantially all of the moving image depending on a characteristic, such as amplitude, of the data.

    Apparatus and method for watermarking a digital image
    3.
    发明授权
    Apparatus and method for watermarking a digital image 有权
    用于对数字图像进行水印的装置和方法

    公开(公告)号：US07376243B2

    公开(公告)日：2008-05-20

    申请号：US11341098

    申请日：2006-01-27

    申请人： Brian Fudge ,  Kadayam Thyagarajan ,  Eric Rosen

    发明人： Brian Fudge ,  Kadayam Thyagarajan ,  Eric Rosen

    IPC分类号： G06K9/00

    CPC分类号： G06T1/005 ,  G06T1/0085 ,  G06T2201/0052

    摘要： An apparatus for adding a watermark to a moving image as it is displayed comprises a watermark generator in which data representing a watermark is generated. The watermark contains at least one of location data and time data pertaining to the displaying of the moving image. The location and time data is protected by forward error encoding. The watermark also contains at least one of program data identifying the moving image and frame data unique in identifying each frame of the moving image. The program and time data is protected by scrambling. A watermark applicator applies the watermark data to image data representing substantially all of the moving image depending on a characteristic, such as amplitude, of the data.

    摘要翻译： 一种用于在运动图像显示时添加水印的装置包括其中生成表示水印的数据的水印生成器。 水印包含与运动图像的显示相关的位置数据和时间数据中的至少一个。 位置和时间数据由前向错误编码保护。 水印还包含标识运动图像的程序数据和识别运动图像的每个帧中唯一的帧数据中的至少一个。 程序和时间数据通过加扰来保护。 水印应用程序将水印数据应用于表示基本上所有运动图像的图像数据，这取决于诸如数据的幅度的特性。

    Quality based image compression
    7.
    发明授权
    Quality based image compression 有权
    基于质量的图像压缩

    公开(公告)号：US07460723B2

    公开(公告)日：2008-12-02

    申请号：US11559358

    申请日：2006-11-13

    申请人： Kadayam Thyagarajan ,  Steven A. Morley

    发明人： Kadayam Thyagarajan ,  Steven A. Morley

    IPC分类号： G06K9/36

    CPC分类号： H04N19/93 ,  H04N19/126 ,  H04N19/147 ,  H04N19/154 ,  H04N19/60 ,  H04N19/96

    摘要： A system and method for quality-based image compression utilizing adaptively sized blocks and sub-blocks of discrete cosine transform coefficient data and a quality based quantization scale factor is claimed. A block size assignment element in an encoder element selects the block or sub-block of an input block of pixel data to be processed. Blocks with variances larger than a threshold are subdivided, while blocks with variances smaller than a threshold are not subdivided. A transform element transforms the pixel values of the selected blocks into the frequency domain. The frequency domain values are quantized either on a block by block basis or a frame by frame basis utilizing a scale factor that correlates with the quality of the image. The data is then serialized and coded in preparation for transmission.

    摘要翻译： 声称使用自适应大小的块和子块的离散余弦变换系数数据和基于质量的量化比例因子的基于质量的图像压缩的系统和方法。 编码器元件中的块大小分配元素选择要处理的像素数据的输入块的块或子块。 方差大于阈值的块被细分，而方差小于阈值的块不被细分。 变换元素将所选择的块的像素值变换为频域。 使用与图像的质量相关联的比例因子，逐个块地或逐帧地量化频域值。 然后将数据序列化和编码以准备传输。

    DCT compression using Golomb-Rice coding
    8.
    发明申请
    DCT compression using Golomb-Rice coding 有权
    使用Golomb-Rice编码进行DCT压缩

    公开(公告)号：US20060171465A1

    公开(公告)日：2006-08-03

    申请号：US11335012

    申请日：2006-01-18

    申请人： Kadayam Thyagarajan

    发明人： Kadayam Thyagarajan

    IPC分类号： H04N11/04 ,  H04B1/66 ,  H04N11/02 ,  H04N7/12

    CPC分类号： G06T9/007 ,  H04N19/119 ,  H04N19/126 ,  H04N19/129 ,  H04N19/13 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/60 ,  H04N19/61 ,  H04N19/93

    摘要： An apparatus and method for encoding quantized frequency represented data, the data comprising zero and non-zero represented data is claimed. For zero represented data, a zero run length is determined. A Golomb parameter is determined as a function of the zero run length. A quotient is encoded as a function of the zero run length and the Golomb parameter. A remainder is encoded as a function of the zero run length, the Golomb parameter and the quotient. The coded quotient and the coded remainder are concatenated. For non-zero represented data, the nonzero data is encoded as a function of the non-zero data value and the sign of the non-zero data value.

    摘要翻译： 一种用于对量化的频率表示数据进行编码的装置和方法，包括零和非零表示数据的数据。 对于零表示数据，确定零游程长度。 确定Golomb参数作为零游程长度的函数。 一个商被编码为零游程长度和Golomb参数的函数。 余数被编码为零运行长度的函数，Golomb参数和商。 编码商和编码余数被级联。 对于非零表示数据，非零数据被编码为非零数据值和非零数据值的符号的函数。

    DCT compression using Golomb-Rice coding
    9.
    发明授权
    DCT compression using Golomb-Rice coding 有权
    使用Golomb-Rice编码进行DCT压缩

    公开(公告)号：US06735254B2

    公开(公告)日：2004-05-11

    申请号：US09895618

    申请日：2001-06-29

    申请人： Kadayam Thyagarajan

    发明人： Kadayam Thyagarajan

    IPC分类号： H04N712

    CPC分类号： G06T9/007 ,  H04N19/119 ,  H04N19/126 ,  H04N19/129 ,  H04N19/13 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/60 ,  H04N19/61 ,  H04N19/93

    摘要： An apparatus and method for encoding quantized frequency represented data wherein the data comprised zero and non-zero represented data. For zero represented data, a zero run length is determined. A Golomb parameter is determined as a function of the zero run length. A quotient is encoded as a function of the zero run length, and the Golomb parameter. A remainder is encoded as a function of the zero run length, the Golomb parameter and the quotient. The coded quotient and the coded remainder are concatenated. For non-zero represented data, the nonzero data is encoded as a function of the non-zero data value and the sign of the non-zero data value.

    摘要翻译： 用于对量化的频率表示数据进行编码的装置和方法，其中数据包括零和非零表示的数据。 对于零表示数据，确定零游程长度。 确定Golomb参数作为零游程长度的函数。 一个商被编码为零运行长度的函数，并且Golomb参数被编码。 余数被编码为零运行长度的函数，Golomb参数和商。 编码商和编码余数被级联。 对于非零表示数据，非零数据被编码为非零数据值和非零数据值的符号的函数。

    Contrast sensitive variance based adaptive block size DCT image compression
    10.
    发明授权
    Contrast sensitive variance based adaptive block size DCT image compression 有权
    对比敏感方差基于自适应块大小的DCT图像压缩

    公开(公告)号：US06529634B1

    公开(公告)日：2003-03-04

    申请号：US09436085

    申请日：1999-11-08

    申请人： Kadayam Thyagarajan ,  Michael J. Merritt

    发明人： Kadayam Thyagarajan ,  Michael J. Merritt

    IPC分类号： G06K936

    CPC分类号： H04N19/96 ,  H04N19/60

    摘要： A system and method for image compression utilizing adaptively sized blocks and sub-blocks of discrete cosine transform coefficient data is presented. A block size assignment element in the encoder selects the block or sub-block of an input block of pixels to be processed. The selection is based on the variance of pixel values. Blocks with variances larger than a threshold are subdivided, while blocks with variances smaller than a threshold are not subdivided. A transform element transforms the pixel values of the selected blocks into the frequency domain. The frequency domain values may then be quantized, serialized, and variable length coded in preparation for transmission.

    摘要翻译： 提出了利用自适应大小的块和离散余弦变换系数数据子块进行图像压缩的系统和方法。 编码器中的块大小分配元素选择要处理的像素的输入块的块或子块。 该选择基于像素值的方差。 方差大于阈值的块被细分，而方差小于阈值的块不被细分。 变换元素将所选择的块的像素值变换为频域。 然后可以对频域值进行量化，串行化和可变长度编码以准备传输。