公开(公告)号：US20210051244A1

公开(公告)日：2021-02-18

申请号：US17086402

申请日：2020-10-31

Applicant: HFIPIX, INC.

Inventor： Shawn L. KELLY

IPC: H04N1/413 ,  G06T3/40

Abstract: A high-definition image is preprocessed to generate a substantially losslessly-reconstructable set of image components that include a relatively low-resolution base image and a plurality of extra-data images that provide for progressively substantially losslessly reconstructing the high-definition image from the base image, wherein a single primary-color component of the extra-data images provides for relatively quickly reconstructing full-resolution intermediate images during the substantially lossless-reconstruction process.

公开(公告)号：US20180160013A1

公开(公告)日：2018-06-07

申请号：US15371278

申请日：2016-12-07

Applicant: Xerox Corporation

Inventor： Stephen R. Dashiell ,  David E. Rumph

IPC: H04N1/413 ,  H04N1/32

CPC classification number: H04N1/413 ,  H04N1/32277 ,  H04N1/32309 ,  H04N2201/0094 ,  H04N2201/3242 ,  H04N2201/3243 ,  H04N2201/325 ,  H04N2201/3252 ,  H04N2201/3259

Abstract: A system and method adaptively lossy compresses image data by receiving a pixel of image data and meta data indicating a type of object that generated the pixel of image data, the pixel of image data includes a first byte having most significant bits of image data and a second byte having least significant bits of image data; electronically determining if the meta data associated with the pixel of image data is associated with a noisy image or indicates that the pixel of image data was generated by a specific type of object; electronically modifying the pixel of image data, when it is determined that the meta data is associated with the pixel of image data is associated with a noisy image or indicates that the pixel of image data was generated by a specific type of object, by setting a predetermined number of low bits of the pixel of image data to zero.

公开(公告)号：US09531915B2

公开(公告)日：2016-12-27

申请号：US14096488

申请日：2013-12-04

Applicant: ASPEED Technology Inc.

Inventor： Chung-Yen Lu

IPC: H04N19/63 ,  H04N1/413 ,  H04N19/60 ,  H04N19/64 ,  H04N19/126 ,  H04N19/152 ,  H04N19/169 ,  H04N19/635 ,  H04N19/423 ,  H04N19/186

CPC classification number: H04N1/413 ,  H04N19/126 ,  H04N19/152 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/423 ,  H04N19/60 ,  H04N19/63 ,  H04N19/635 ,  H04N19/64

Abstract: An image encoding system is disclosed. The image encoding system comprises a wavelet transform unit and a processing circuit. The wavelet transform unit performs a multiple-line-based wavelet transform on plural consecutive component lines to generate a wavelet transformed image comprising wavelet coefficients of plural sub-bands. The processing circuit coupled to the wavelet transform unit for quantizing, scanning and encoding the wavelet coefficients to generate a compressed image. Here, a number of the plural consecutive component lines is a multiple of 2 and less than 5. Since the wavelet transform unit performs the multiple-line-based wavelet transform to reduce the storage amount and maintain a good compression quality, an image encoding system of the invention can use SRAM buffers instead of a DRAM buffer.

Abstract translation: 公开了一种图像编码系统。 图像编码系统包括小波变换单元和处理电路。 小波变换单元在多个连续分量线上执行基于多行的小波变换，以生成包括多个子带的小波系数的小波变换图像。 耦合到小波变换单元的处理电路用于量化，扫描和编码小波系数以产生压缩图像。 这里，多个连续分量线中的多个是2并小于5的倍数。由于小波变换单元执行基于多行的小波变换以减小存储量并保持良好的压缩质量，所以图像编码系统 本发明可以使用SRAM缓冲器而不是DRAM缓冲器。

公开(公告)号：US20160277636A1

公开(公告)日：2016-09-22

申请号：US14854733

申请日：2015-09-15

Applicant: FUJI XEROX CO., LTD.

Inventor： Kenichi KAWAUCHI

IPC: H04N1/413 ,  H04N1/00

CPC classification number: H04N1/413 ,  H04N1/00005 ,  H04N1/41

Abstract: Provided is an image compression apparatus including a dividing unit that divides a bit width pixel value set in advance that indicates compressed image information into an invalid bit region and a valid bit region other than the invalid bit region that are replaced with a fixed value determined in advance, an image information conversion unit that makes a value of the valid bit region be a value of a bit corresponding to the pixel value and makes a value of the invalid bit region be the fixed value determined in advance and converts the compressed image information to conversion image information, and a compression unit that compresses the conversion image information.

Abstract translation: 提供了一种图像压缩装置，包括：分割单元，其将预先设置的指示压缩图像信息的比特宽度像素值分成无效比特区域和除了无效比特区域之外的有效比特区域， 使图像信息转换单元使有效位区域的值成为与像素值相对应的位的值，并使无效位区域的值成为预先确定的固定值，并将压缩图像信息转换为 转换图像信息，以及压缩转换图像信息的压缩单元。

公开(公告)号：US07974480B2

公开(公告)日：2011-07-05

申请号：US12551406

申请日：2009-08-31

Applicant: Jau-Wen Ren

Inventor： Jau-Wen Ren

IPC: G06K9/36 ,  G06K9/46 ,  H04N1/413 ,  H04N1/41

CPC classification number: H04N1/40

Abstract: An Image Signal Processing unit (ISP) has at least one fixed-size line buffer which is smaller than the width of the image buffer. To handle the image data, the image buffer is divided into regions which are sequentially loaded into the at least one fixed-size line buffer of the ISP for processing. Since functions of the ISP operate with neighboring pixels of the target pixel, margins of the regions need to be transmitted as well. After processing by the ISP, the data is encoded which includes a DCT, Quantization, and VLC. The result is then stored in segments in a buffer storage. VLC also inserts a Restart Marker which is used as a pointer to stitch together all the segments thus producing a new and seamless image.

Abstract translation: 图像信号处理单元（ISP）具有至少一个小于图像缓冲器的宽度的固定大小的行缓冲器。 为了处理图像数据，图像缓冲器被划分为顺序地加载到ISP的至少一个固定大小的行缓冲器中以进行处理的区域。 由于ISP的功能与目标像素的相邻像素一起工作，所以区域的边缘也需要传输。 在ISP处理之后，数据被编码，包括DCT，量化和VLC。 然后将结果存储在缓冲存储器中的段中。 VLC还插入一个重新启动标记，该标记用作指针，以将所有段拼接在一起，从而产生新的无缝图像。

公开(公告)号：US07738722B2

公开(公告)日：2010-06-15

申请号：US11252177

申请日：2005-10-17

Applicant: Cristina Gomila ,  Joan Lllach ,  Jeffrey Allen Cooper

Inventor： Cristina Gomila ,  Joan Lllach ,  Jeffrey Allen Cooper

IPC: G06K9/40 ,  G06K9/36 ,  G06K9/00 ,  H04N5/217 ,  H04N5/228 ,  H04N1/00 ,  H04N1/413 ,  H04N1/41 ,  H04N1/32

CPC classification number: G06T5/002 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N5/21 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/46 ,  H04N19/86

Abstract: Reduction in the blockiness of a simulated film grain block can be achieved either by the use of adaptive downscaling or adaptive deblocking filtering to adjust the intensity of the pixels at the block edge in accordance with at least one film grain block parameter, such as film grain size, intensity and texture. Performing such adaptive downscaling or adaptive deblocking filtering achieves improved performance at lower computational cost by avoiding modification of film grain block pixels in lesser affected areas.

Abstract translation: 可以通过使用自适应缩小或自适应去块滤波来根据至少一个胶片颗粒块参数（例如胶片颗粒）调整块边缘处的像素的强度来实现模拟胶片颗粒块的阻挡性的减小 尺寸，强度和质感。 执行这种自适应缩小或自适应去块滤波通过避免在较小影响区域中修改胶片颗粒块像素，以较低的计算成本实现了改进的性能。

公开(公告)号：US07593148B2

公开(公告)日：2009-09-22

申请号：US11082467

申请日：2005-03-17

Applicant: Takashi Ishikawa ,  Masaki Higurashi

Inventor： Takashi Ishikawa ,  Masaki Higurashi

IPC: H04N1/46 ,  H04N1/413

CPC classification number: H04N1/64 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: An image compressing method includes: separating image data obtained from an image pickup device into each primary color component; obtaining difference data between each piece of image data of color components of colors other than a reference color in the image data separated into each primary color component, and the image data of the color component of the reference color; encoding the difference data to obtain a variable-length code; and encoding the image data of the color component of the reference color to obtain a predicted code.

Abstract translation: 图像压缩方法包括：将从图像拾取装置获得的图像数据分离成每个基色分量; 在分割为每个原色分量的图像数据中的除参考颜色之外的颜色分量的每个图像数据之间获得差异数据和参考颜色的颜色分量的图像数据; 编码差分数据以获得可变长度码; 并对参考颜色的颜色分量的图像数据进行编码以获得预测代码。

公开(公告)号：US07450774B2

公开(公告)日：2008-11-11

申请号：US10126981

申请日：2002-04-22

Applicant: Cheul-hee Hahm ,  Jae Moon Jo

Inventor： Cheul-hee Hahm ,  Jae Moon Jo

IPC: G06K9/00 ,  G06K9/36 ,  G06K9/46 ,  H04N1/41 ,  H04N1/413

CPC classification number: H04N5/9264 ,  H04N19/152 ,  H04N19/18 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N19/91

Abstract: An apparatus and a method of changing a bit rate of a compressed image bit stream by changing a codeword so as to easily change the bit rate and reduce a changing loss. The apparatus for changing a bit rate, in which an input bit stream generated by an image compression encoding method is changed into an output bit stream having a desired bit rate, includes a changing codeword determiner which selects codewords to replace the codewords of the input bit stream, and a codeword changer which changes the codewords of the input bit stream into the codewords selected by the changing codeword determiner. The method and the apparatus can be applied to image services provided through the Internet and receiving apparatuses supporting the Personal Video Recorder (PVR) function. Particularly, the method of changing the bit rate of a compressed image bit stream changes the codewords of input transform coefficients so as to easily change the bit rate and reduce the changing loss.

Abstract translation: 通过改变码字来改变压缩图像比特流的比特率以便容易地改变比特率并减少变化的损耗的装置和方法。 用于改变比特率的装置，其中通过图像压缩编码方法生成的输入比特流被改变为具有期望比特率的输出比特流，包括改变码字确定器，其选择码字来替换输入比特的码字 流和码字改变器，其将输入比特流的码字改变为由改变的码字确定器选择的码字。 该方法和装置可以应用于通过互联网提供的图像服务和支持个人录像机（PVR）功能的接收装置。 特别地，改变压缩图像比特流的比特率的方法改变输入变换系数的码字，以便容易地改变比特率并减少变化的损耗。

公开(公告)号：US07333544B2

公开(公告)日：2008-02-19

申请号：US10892248

申请日：2004-07-16

Applicant: Woo-shik Kim ,  Dae-sung Cho ,  Hyun Mun Kim

Inventor： Woo-shik Kim ,  Dae-sung Cho ,  Hyun Mun Kim

IPC: H04B1/66 ,  H04N1/413 ,  G06K9/36

CPC classification number: H04N11/042 ,  H04N19/109 ,  H04N19/11 ,  H04N19/147 ,  H04N19/176 ,  H04N19/186 ,  H04N19/51 ,  H04N19/593

Abstract: A lossless image encoding/decoding method and apparatus. The lossless color image encoding apparatus includes a motion prediction image generator estimating a motion between a previous image and a current image and outputting a corresponding prediction image, a residue generator generating a temporal residue corresponding to a difference between a prediction image generated by the motion prediction image generator and the corresponding block of the current image with respect to different components of the color image, a prediction residue generator generating prediction residues by defining a linear-transformed value of one residue among the different components of the color image output from the residue generator as a predictor and using differences between each of the residues of the other components and the predictor, and an entropy encoder receiving the residue forming the predictor from the residue generator and the prediction residues from the prediction residue generator and generating a bitstream. Encoding methods, decoding apparatuses, and decoding methods can be implemented similarly.

Abstract translation: 一种无损图像编码/解码方法和装置。 无损彩色图像编码装置包括运动预测图像生成器，其估计先前图像和当前图像之间的运动并输出相应的预测图像;残差生成器，生成与通过运动预测生成的预测图像之间的差相对应的时间残差 图像生成器和相对于彩色图像的不同分量的当前图像的对应块;预测残差生成器，其通过在从残差生成器输出的彩色图像的不同分量中定义一个残差的线性变换值来生成预测残差 作为预测器，并且使用其他分量和预测器的每个残差之间的差异，以及熵编码器从残差发生器接收形成预测器的残差和来自预测残差发生器的预测残差并产生比特流。 可以类似地实现编码方法，解码装置和解码方法。

公开(公告)号：US07308150B2

公开(公告)日：2007-12-11

申请号：US10370561

申请日：2003-02-24

Applicant: Taro Yokose

Inventor： Taro Yokose

IPC: G06K9/36 ,  H04N1/413 ,  H03M7/46

CPC classification number: G06T9/004 ,  G06T9/005 ,  H04N1/41

Abstract: To provide an image coding apparatus that can generate a code that can be decoded by a general decoding apparatus while attaining a high coding speed. As a result of processing in a plurality of prediction units 21, a control unit 11 generates a predicted pixel value for a pixel of interest based on a pixel value of a predicting pixel located at a distance from the pixel of interest, the distance being predetermined for each pixel value prediction unit 21, counts, as a run-length for each pixel value prediction unit 21, the number of times that the pixel value of the pixel of interest successively correspond with the predicted pixel value, selects any of pixel value prediction units related to a run-length of one pixel or more, and outputs a code by referring to a predetermined code table with respect to a distance between the pixel of interest and the predicting pixel for the selected pixel value prediction unit 21 and the run-length thereof. The code table is defined to include, as a redundant code, a code related to a distance other than the distances between the pixel of interest and the predicting pixels.

Abstract translation: 提供一种图像编码装置，其可以在获得高编码速度的同时生成可由通用解码装置解码的代码。 作为多个预测单元21中的处理的结果，控制单元11基于距离感兴趣像素的距离处的预测像素的像素值生成用于感兴趣像素的预测像素值，该距离是预定的 对于每个像素值预测单元21，对于每个像素值预测单元21的游程长度，将感兴趣像素的像素值与预测像素值连续相对应的次数进行计数，选择​​像素值预测 与一个像素以上的游程长度相关的单元，并且通过参考关于所选像素值预测单元21的关注像素和预测像素之间的距离的预定代码表来输出代码， 长度。 代码表被定义为包括与感兴趣的像素和预测像素之间的距离之外的距离相关的代码作为冗余代码。