公开(公告)号：US20070171490A1

公开(公告)日：2007-07-26

申请号：US11490020

申请日：2006-07-21

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

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

IPC分类号： H04N1/46

CPC分类号： H04N9/64 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82

摘要： Sensor image encoding and/or decoding systems, media, and methods. The sensor image encoding system may include a first color component interpolation unit transforming a sensor image into a first format image by interpolating a first color component of at least two color components in the sensor image including the at least two color components, in which one pixel has one color component, and an encoding unit generating a bitstream by encoding the first format image. The sensor image decoding system may include a decoding unit receiving a bitstream obtained by encoding a sensor image including the at least two color components, where one pixel has one color component, and restoring a first format image by using at least two color components obtained by decoding the bitstream, and a first color component interpolation unit interpolating at least one color component in the first format image provided from the decoding unit.

摘要翻译： 传感器图像编码和/或解码系统，媒体和方法。 传感器图像编码系统可以包括第一颜色分量内插单元，其通过内插包括至少两个颜色分量的传感器图像中的至少两个颜色分量的第一颜色分量将传感器图像变换为第一格式图像，其中一个像素 具有一个颜色分量，以及编码单元，通过对第一格式图像进行编码来生成比特流。 传感器图像解码系统可以包括解码单元，其接收通过对包括至少两个颜色分量的传感器图像进行编码而获得的比特流，其中一个像素具有一个颜色分量，并且通过使用由以下方式获得的至少两个颜色分量来恢复第一格式图像： 对比特流进行解码，以及第一颜色分量内插单元，对从解码单元提供的第一格式图像中的至少一个颜色分量进行内插。

公开(公告)号：US20070019871A1

公开(公告)日：2007-01-25

申请号：US11484699

申请日：2006-07-12

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

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

IPC分类号： G06K9/36

CPC分类号： H04N19/182 ,  H04N19/124 ,  H04N19/146 ,  H04N19/60

摘要： A system, medium, and method encoding and/or decoding image data. The image data encoding may include a transformer transforming pixel values of an image in the time domain to pixel values in the frequency domain, a quantization coefficient determiner determining a quantization coefficient corresponding to the number of bits per pixel of the image by adjusting a quantization variable defined by a user, a quantization unit quantizing the pixel values transformed by the transformer based on the quantization coefficient determined by the quantization coefficient determiner, and an entropy encoder generating a bitstream of the quantized pixel values.

摘要翻译： 系统，媒介和方法编码和/或解码图像数据。 图像数据编码可以包括将时域中的图像的像素值变换为频域中的像素值的变换器，量化系数确定器通过调整量化变量来确定与每像素的位数相对应的量化系数 由用户定义的量化单元，其基于由量化系数确定器确定的量化系数量化由变压器变换的像素值;以及熵编码器，生成量化像素值的比特流。

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：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。