公开(公告)号：US20070014478A1

公开(公告)日：2007-01-18

申请号：US11487314

申请日：2006-07-17

申请人： Dmitri Birinov ,  Hyun Mun Kim ,  Daesung Cho ,  Wooshik Kim

发明人： Dmitri Birinov ,  Hyun Mun Kim ,  Daesung Cho ,  Wooshik Kim

IPC分类号： G06K9/36 ,  G06K9/00

CPC分类号： H04N19/159 ,  H04N19/186 ,  H04N19/61

摘要： A color image and video encoding and/or decoding apparatus, method, and medium using inter-color-component prediction in accordance with an encoding mode are provided. The encoding apparatus for encoding an original image including at least two color image components, includes: a residue generation unit, if the encoding mode is inter mode, generating a temporal residue by obtaining the difference of a current image and a prediction image obtained by estimating a motion in units of blocks between the current image and a previous image of each color component; a residue color prediction unit encoding the temporal residue of the residue generation unit, by performing residue inter-color-component prediction; an intra color prediction unit, if the encoding mode is intra mode, encoding the original image by performing inter-color-component prediction of the original image; and an entropy encoding unit generating a bitstream by entropy encoding the result value of the residue color prediction unit or the intra color prediction unit. According to the apparatus, method, and medium, a color image or video data can be directly compressed effectively without a conventional color transform process. Furthermore, by using the correlation of image components, redundant information between color components varying with respect to the encoding mode is removed so that the encoding efficiency can be enhanced.

摘要翻译： 提供了根据编码模式的彩色图像和视频编码和/或解码装置，方法和使用颜色间分量预测的介质。 用于编码包括至少两个彩色图像分量的原始图像的编码装置包括：残差生成单元，如果编码模式是帧间模式，则通过获得当前图像的差和通过估计获得的预测图像来生成时间残差 以当前图像和每个颜色分量的先前图像之间的块为单位的运动; 残差颜色预测单元，其通过执行残差色彩分量预测来编码残差生成单元的时间残差; 帧内颜色预测单元，如果编码模式是帧内模式，则通过执行原始图像的颜色间分量预测来对原始图像进行编码; 以及熵编码单元，其通过对残差颜色预测单元或帧内颜色预测单元的结果值进行熵编码来生成比特流。 根据装置，方法和介质，可以有效地直接压缩彩色图像或视频数据，而无需常规的颜色变换处理。 此外，通过使用图像分量的相关性，去除了相对于编码模式变化的颜色分量之间的冗余信息，从而可以提高编码效率。

公开(公告)号：US20060203913A1

公开(公告)日：2006-09-14

申请号：US11362920

申请日：2006-02-28

申请人： Wooshik Kim ,  Hyun Kim ,  Daesung Cho ,  Dmitri Birinoy

发明人： Wooshik Kim ,  Hyun Kim ,  Daesung Cho ,  Dmitri Birinoy

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

CPC分类号： H04N19/186 ,  H04N19/103 ,  H04N19/107 ,  H04N19/147 ,  H04N19/176 ,  H04N19/51 ,  H04N19/593

摘要： A prediction image generation method and apparatus using a single coding mode for all color components and image and video encoding and decoding methods and apparatuses using the same are provided. The prediction image generation apparatus includes: a spatial prediction image generation unit applying an identical prediction direction for each image component in an original image composed of at least two image components, and obtaining a spatial prediction image from a pixel spatially close to a pixel block of a predetermined size of a current frame; a temporal prediction image generation unit applying an identical block size, motion vector, and motion interpolation method for each image component in an original image composed of at least two image components, and obtaining a temporal prediction image by estimating motion in units of blocks of a predetermined size between a previous frame and a current frame of each of the image components; an encoding mode selection unit selecting an encoding mode by using the spatial prediction image and the temporal prediction image; and a single mode prediction image generation unit generating a prediction image by identically applying the encoding mode selected in the encoding mode selection unit to each component. By increasing the redundancy of information between prediction error signals of color components, the encoding efficiency can be enhanced in the method and apparatus.

摘要翻译： 提供了一种用于所有颜色分量的单一编码模式的预测图像生成方法和装置，以及使用其的图像和视频编码和解码方法和装置。 预测图像生成装置包括：空间预测图像生成单元，对于由至少两个图像分量构成的原始图像中的每个图像分量应用相同的预测方向，并且从空间上靠近像素块的像素获得空间预测图像 当前帧的预定大小; 时间预测图像生成单元，对于由至少两个图像分量构成的原始图像中的每个图像分量应用相同的块大小，运动矢量和运动内插方法，并且通过以单位为单位估计运动来获得时间预测图像 每个图像分量的先前帧和当前帧之间的预定大小; 编码模式选择单元，通过使用空间预测图像和时间预测图像来选择编码模式; 以及通过将编码模式选择单元中选择的编码模式相同地应用于每个分量来生成预测图像的单模式预测图像生成单元。 通过增加颜色分量的预测误差信号之间的信息的冗余度，可以在方法和装置中提高编码效率。

公开(公告)号：US20060164268A1

公开(公告)日：2006-07-27

申请号：US11335608

申请日：2006-01-20

申请人： Sangjo Lee ,  Wooshik Kim ,  Daesung Cho

发明人： Sangjo Lee ,  Wooshik Kim ,  Daesung Cho

IPC分类号： H03M7/00

CPC分类号： H04N19/184 ,  H04N19/103 ,  H04N19/115 ,  H04N19/132 ,  H04N19/149 ,  H04N19/174 ,  H04N19/176

摘要： A method, medium, and apparatus controlling a bit rate in image data encoding. The method for controlling a bit rate in image data encoding includes setting a reference bit amount for encoding a block group composed of a predetermined number of blocks created by dividing image data of a frame, encoding pixel values of the blocks according to a bit depth used to quantize the pixel values of the blocks, checking whether encoding of the frame is completed, and comparing a group bit amount indicating the amount of encoded bits of the block group with the set reference bit amount to adjust the bit depth if encoding of the unit frame is not completed and accordingly repeating the setting of the reference bit amount, encoding pixel values of the blocks, and checking whether encoding of the frame is completed.

公开(公告)号：US20060098881A1

公开(公告)日：2006-05-11

申请号：US11268646

申请日：2005-11-08

申请人： Wooshik Kim

发明人： Wooshik Kim

IPC分类号： G06K9/36

CPC分类号： H04N19/48 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/14 ,  H04N19/146 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61

摘要： A method of encoding and decoding image data, and an apparatus to perform the method, are provided. The image data encoding method includes: converting and quantizing pixel values of a block of image data to form a conversion block of image data; determining a classification mode used to classify the conversion block into a first region having one or more coefficients other than 0, and a second region having all coefficients of 0, based on a diagonal of the conversion block; and generating bit streams for the coefficients of the first region according to the determined classification mode and a first bit depth indicating a bit number required to binarize coefficients of the conversion block. The image data encoding method can increase the compression rate and perform encoding in real time while not degrading an image visibly.

摘要翻译： 提供了对图像数据进行编码和解码的方法以及执行该方法的装置。 图像数据编码方法包括：对图像数据块的像素值进行变换和量化，形成图像数据的转换块; 确定用于将所述转换块分类为具有除了0以外的一个或多个系数的第一区域的分类模式，以及基于所述转换块的对角线的具有0的所有系数的第二区域; 以及根据确定的分类模式生成用于第一区域的系数的比特流，以及指示二进制化转换块的系数所需的比特数的第一比特深度。 图像数据编码方法可以增加压缩率并实时执行编码，而不会明显降低图像。

公开(公告)号：US20060098879A1

公开(公告)日：2006-05-11

申请号：US11271708

申请日：2005-11-14

申请人： Wooshik Kim ,  Seungwoo Lee ,  Woochul Kim ,  Dmitry Birinov

发明人： Wooshik Kim ,  Seungwoo Lee ,  Woochul Kim ,  Dmitry Birinov

IPC分类号： G06K9/36

CPC分类号： G09G3/3611 ,  G09G5/39 ,  G09G2320/0252 ,  G09G2340/02 ,  G09G2340/16

摘要： There are provided an apparatus and method for performing dynamic capacitance compensation (DCC) in a liquid crystal display (LCD). The DCC apparatus includes: a first line buffer reading and temporarily storing pixel values of an image for each line; an encoder transforming and quantizing the pixel values stored for each line for each block and generating bit streams; a memory storing the generated bit streams; a decoder decoding the bit streams stored in the memory for the each block and outputting the decoded bit streams; a second line buffer reading and temporarily storing the decoded pixel values for the each block; and a compensation pixel value detector detecting a compensation pixel value for each pixel, from pixel value differences between pixel values of a current frame stored in the first line buffer and pixel values of a previous frame stored in the second line buffer. Therefore, it is possible to reduce the number of pins of a memory interface by reducing the number of memory device for storing pixel values of image data, required for performing DCC of a LCD, resulting in minimizing a chip size, and to enhance compression efficiency without visual deterioration in images.

摘要翻译： 提供了一种用于在液晶显示器（LCD）中执行动态电容补偿（DCC）的装置和方法。 DCC装置包括：第一行缓冲器，读取并临时存储每行的图像的像素值; 编码器对每个块的每行存储的像素值进行变换和量化，并产生位流; 存储所生成的比特流的存储器; 解码器，对存储在每个块中的存储器中的比特流进行解码并输出解码的比特流; 第二行缓冲器读取并临时存储每个块的解码像素值; 以及补偿像素值检测器，从存储在第一行缓冲器中的当前帧的像素值和存储在第二行缓冲器中的先前帧的像素值之间的像素值差中检测每个像素的补偿像素值。 因此，通过减少用于存储LCD的DCC所需的图像数据的像素值的存储器件的数量，可以减少存储器接口的引脚数，从而最小化芯片尺寸，并提高压缩效率 没有图像的视觉恶化。

公开(公告)号：US08718146B2

公开(公告)日：2014-05-06

申请号：US11490021

申请日：2006-07-21

申请人： Wooshik Kim ,  Hyun Mun Kim ,  Daesung Cho ,  Dmitri Birinov ,  Doohyun Kim

发明人： Wooshik Kim ,  Hyun Mun Kim ,  Daesung Cho ,  Dmitri Birinov ,  Doohyun Kim

IPC分类号： H04N7/12

CPC分类号： H04N19/146 ,  H04N19/176 ,  H04N19/61 ,  H04N19/91

摘要： A method, medium, and system encoding/decoding video data using a binary arithmetic coding adaptive to a compression bit rate of the video data. The system may include a bitrate adaptation unit determining a maximum length of a prefix using a compression bitrate of the video data, a binarization unit dividing the video data into a prefix and a suffix according to the determined maximum length of the prefix and binarizing the video data, and an arithmetic encoding unit performing an arithmetic encoding on the binarized video data. The video data may be encoded/decoded using binary arithmetic encoding/decoding by determining the maximum length of the prefix, an order of an exponential Golomb code, and the number of contexts based on the compression bitrate. Accordingly, it is possible to obtain high encoding efficiency regardless of a range of the desired compression bitrate.

摘要翻译： 使用适应于视频数据的压缩比特率的二进制算术编码的方法，媒体和系统对视频数据进行编码/解码。 该系统可以包括比特率适配单元，其使用视频数据的压缩比特率来确定前缀的最大长度;二进制化单元，根据所确定的前缀的最大长度将视频数据划分成前缀和后缀，并且二进制化视频 数据和对二值化视频数据执行算术编码的算术编码单元。 可以使用二进制算术编码/解码，通过基于压缩比特率确定前缀的最大长度，指数Golomb码的顺序和上下文的数量来对视频数据进行编码/解码。 因此，无论期望的压缩比特率的范围如何，都可以获得高的编码效率。

公开(公告)号：US08300689B2

公开(公告)日：2012-10-30

申请号：US11072492

申请日：2005-03-07

申请人： Daesung Cho ,  Hyun Mun Kim ,  Wooshik Kim

发明人： Daesung Cho ,  Hyun Mun Kim ,  Wooshik Kim

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/11 ,  H04N19/132 ,  H04N19/176 ,  H04N19/20 ,  H04N19/21 ,  H04N19/51 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

摘要： An apparatus and a method for encoding and/or decoding an image containing a gray alpha channel image. The apparatus for encoding an image includes a block data reception unit receiving image data of a block currently being input to the apparatus and classifies the current block either as a foreground image portion or as a background image portion according to values of gray alpha components in the current block; a foreground image encoding unit sequentially encoding the gray alpha components and brightness and hue components of the current block if the current block is classified as the foreground image portion; and a background image encoding unit encoding the gray alpha components of the current block if the current block is classified as the background image portion. The apparatus for decoding an image includes a bitstream interpretation unit interpreting the bitstream in units of predetermined blocks and classifies a current block obtained as one of the interpretation results either as a foreground image portion or as a background image portion; a foreground image decoding unit generating a restored gray alpha channel image and a restored brightness and hue image by sequentially decoding gray alpha components and brightness and hue components of the current block if the current block is classified as the foreground image portion; and a background image decoding unit generating a restored gray alpha channel image by decoding the gray alpha components of the current block if the current block is classified as the background image portion.

摘要翻译： 一种用于编码和/或解码包含灰色阿尔法通道图像的图像的装置和方法。 用于编码图像的装置包括块数据接收单元，接收当前正在输入到装置的块的图像数据，并将当前块作为前景图像部分或作为背景图像部分根据 当前块 如果当前块被分类为前景图像部分，则前景图像编码单元顺序地编码当前块的灰度α分量和亮度和色调分量; 以及背景图像编码单元，如果当前块被分类为背景图像部分，则对当前块的灰度α分量进行编码。 用于解码图像的装置包括比特流解释单元，以预定块为单位解释比特流，并将作为解释结果之一获得的当前块分类为前景图像部分或背景图像部分; 前景图像解码单元，如果当前块被分类为前景图像部分，则通过依次解码灰度α分量和当前块的亮度和色相分量，产生恢复的灰度阿尔法通道图像和恢复的亮度和色相图像; 以及背景图像解码单元，如果当前块被分类为背景图像部分，则通过对当前块的灰色α分量进行解码来生成恢复的灰色阿尔法通道图像。

公开(公告)号：US08170357B2

公开(公告)日：2012-05-01

申请号：US12659698

申请日：2010-03-17

申请人： Wooshik Kim ,  Hyun Mun Kim ,  Daesung Cho ,  Jinhyung Park

发明人： Wooshik Kim ,  Hyun Mun Kim ,  Daesung Cho ,  Jinhyung Park

IPC分类号： G06K9/46

CPC分类号： H04N19/20

摘要： An apparatus and a method generate a coded block pattern (CBP) of an alpha channel image. An apparatus and a method encode or decode the alpha channel image using the method. The alpha channel image encoding apparatus includes a CBP generator generating a CBP of a first block corresponding to an encoding unit in the alpha channel image by allocating CBPs to a plurality of second blocks that includes the first block; and a bitstream generator generating a bitstream by encoding the CBP or the CBP and pixel values of the second blocks based on the CBP of each of second blocks.

摘要翻译： 一种装置和方法生成α通道图像的编码块图案（CBP）。 使用该方法对α通道图像进行编码或解码的装置和方法。 所述α通道图像编码装置包括CBP生成器，其通过将CBP分配给包括所述第一块的多个第二块来生成与所述α通道图像中的编码单元相对应的第一块的CBP; 以及基于每个第二块的CBP，通过对CBP或CBP和第二块的像素值进行编码来生成比特流的比特流生成器。

公开(公告)号：US08019001B2

公开(公告)日：2011-09-13

申请号：US11362920

申请日：2006-02-28

申请人： Wooshik Kim ,  Hyun Mun Kim ,  Daesung Cho ,  Dmitri Birinov

发明人： Wooshik Kim ,  Hyun Mun Kim ,  Daesung Cho ,  Dmitri Birinov

IPC分类号： H04N11/02

CPC分类号： H04N19/186 ,  H04N19/103 ,  H04N19/107 ,  H04N19/147 ,  H04N19/176 ,  H04N19/51 ,  H04N19/593

摘要： A prediction image generation method and apparatus using a single coding mode for all color components and image and video encoding and decoding methods and apparatuses using the same are provided. The prediction image generation apparatus includes: a spatial prediction image generation unit applying an identical prediction direction for each image component in an original image composed of at least two image components, and obtaining a spatial prediction image from a pixel spatially close to a pixel block of a predetermined size of a current frame; a temporal prediction image generation unit applying an identical block size, motion vector, and motion interpolation method for each image component in an original image composed of at least two image components, and obtaining a temporal prediction image by estimating motion in units of blocks of a predetermined size between a previous frame and a current frame of each of the image components; an encoding mode selection unit selecting an encoding mode by using the spatial prediction image and the temporal prediction image; and a single mode prediction image generation unit generating a prediction image by identically applying the encoding mode selected in the encoding mode selection unit to each component. By increasing the redundancy of information between prediction error signals of color components, the encoding efficiency can be enhanced in the method and apparatus.

摘要翻译： 提供了一种用于所有颜色分量的单一编码模式的预测图像生成方法和装置，以及使用其的图像和视频编码和解码方法和装置。 预测图像生成装置包括：空间预测图像生成单元，对于由至少两个图像分量构成的原始图像中的每个图像分量应用相同的预测方向，并且从空间上靠近像素块的像素获得空间预测图像 当前帧的预定大小; 时间预测图像生成单元，对于由至少两个图像分量构成的原始图像中的每个图像分量应用相同的块大小，运动矢量和运动内插方法，并且通过以单位为单位估计运动来获得时间预测图像 每个图像分量的先前帧和当前帧之间的预定大小; 编码模式选择单元，通过使用空间预测图像和时间预测图像来选择编码模式; 以及通过将编码模式选择单元中选择的编码模式相同地应用于每个分量来生成预测图像的单模式预测图像生成单元。 通过增加颜色分量的预测误差信号之间的信息的冗余度，可以在方法和装置中提高编码效率。

公开(公告)号：US07957585B2

公开(公告)日：2011-06-07

申请号：US11264017

申请日：2005-11-02

申请人： Wooshik Kim ,  Seungwoo Lee ,  Woochul Kim ,  Dmitri Birinov

发明人： Wooshik Kim ,  Seungwoo Lee ,  Woochul Kim ,  Dmitri Birinov

IPC分类号： G06K9/00

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/593 ,  H04N19/60

摘要： An apparatus and method for spatially predicting image data, an apparatus and method for encoding image data, an apparatus and method for compensating for spatial prediction of image data, and an apparatus and method for decoding image data. The spatial prediction apparatus of image data includes: a spatial prediction unit performing a spatial prediction of pixel values of a current block using pixel values of blocks adjacent to an upper row of the current block. A pipeline process is possible when the spatial prediction is performed, thereby performing real time encoding and decoding.

摘要翻译： 用于空间预测图像数据的装置和方法，用于编码图像数据的装置和方法，用于补偿图像数据的空间预测的装置和方法，以及用于对图像数据进行解码的装置和方法。 图像数据的空间预测装置包括：空间预测单元，使用与当前块的上一行相邻的块的像素值来执行当前块的像素值的空间预测。 当执行空间预测时，可以进行流水线处理，从而进行实时编码和解码。