Method and apparatus for encoding/decoding image using adaptive distribution adjustment of differential values
    1.
    发明授权
    Method and apparatus for encoding/decoding image using adaptive distribution adjustment of differential values 失效
    使用差分值的自适应分布调整对图像进行编码/解码的方法和装置

    公开(公告)号:US08417044B2

    公开(公告)日:2013-04-09

    申请号:US12488184

    申请日:2009-06-19

    IPC分类号: G06K9/36

    摘要: Provided are an image encoding method and apparatus, in which a distribution of difference values included in an image unit is adjusted using a predetermined offset, an image unit including the adjusted distribution of the difference values is divided into an image plane corresponding to upper bits and an image plane for lower bits, and then the image planes are entropy-encoded.

    摘要翻译: 提供了一种图像编码方法和装置,其中使用预定偏移来调整包括在图像单元中的差值的分布,包括差分值的调整分布的图像单元被划分为与高位相对应的图像平面, 用于较低位的图像平面,然后对图像平面进行熵编码。

    METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING ADAPTIVE DISTRIBUTION ADJUSTMENT OF DIFFERENTIAL VALUES
    2.
    发明申请
    METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING ADAPTIVE DISTRIBUTION ADJUSTMENT OF DIFFERENTIAL VALUES 失效
    使用自适应分布调整差分值来编码/解码图像的方法和装置

    公开(公告)号:US20090317008A1

    公开(公告)日:2009-12-24

    申请号:US12488184

    申请日:2009-06-19

    IPC分类号: G06K9/36 H04N7/48

    摘要: Provided are an image encoding method and apparatus, in which a distribution of difference values included in an image unit is adjusted using a predetermined offset, an image unit including the adjusted distribution of the difference values is divided into an image plane corresponding to upper bits and an image plane for lower bits, and then the image planes are entropy-encoded.

    摘要翻译: 提供了一种图像编码方法和装置,其中使用预定偏移来调整包括在图像单元中的差值的分布,包括差分值的调整分布的图像单元被划分为与高位相对应的图像平面, 用于较低位的图像平面,然后对图像平面进行熵编码。

    Method of encoding and decoding motion picture frames
    3.
    发明授权
    Method of encoding and decoding motion picture frames 有权
    运动图像帧的编码和解码方法

    公开(公告)号:US08311106B2

    公开(公告)日:2012-11-13

    申请号:US11961300

    申请日:2007-12-20

    IPC分类号: H04N7/12 H04B1/66

    摘要: Provided is a method for encoding and decoding a motion picture frame, which achieve natural picture conversion of frames near an Instantaneous Decoding Refresh-I (IDR-I) frame. The decoding method includes: decoding a first frame which is a P frame that is to be displayed last among a plurality of P frames that are to be displayed before an IDR-I frame is displayed; decoding the IDR-I frame; decoding a second frame which is a P frame that is to be displayed first among a plurality of P frames that are to be displayed after the IDR-I frame is displayed; and maintaining a reference frame stored in a buffer, for decoding the first frame until the second frame is decoded. Therefore, by allowing frames near an IDR-I frame to access reference frames stored in a buffer, natural picture conversion is possible, and accordingly smooth picture conversion without flickering is possible.

    摘要翻译: 提供了一种对瞬时解码刷新I(IDR-I)帧附近的帧进行自然图像转换的运动图像帧进行编码和解码的方法。 解码方法包括:在显示IDR-I帧之前,对要在显示的多个P帧中最后显示的P帧的第一帧进行解码; 解码IDR-I帧; 解码作为在显示IDR-I帧之后要显示的多个P帧中首先显示的P帧的第二帧; 以及保持存储在缓冲器中的参考帧,用于对第一帧进行解码,直到第二帧被解码。 因此,通过允许靠近IDR-I帧的帧访问存储在缓冲器中的参考帧,可以进行自然图像转换,因此可以平滑地进行不闪烁的图像转换。

    Method and apparatus for generating motion vector in hierarchical motion estimation
    4.
    发明授权
    Method and apparatus for generating motion vector in hierarchical motion estimation 失效
    用于在分层运动估计中产生运动矢量的方法和装置

    公开(公告)号:US08130835B2

    公开(公告)日:2012-03-06

    申请号:US11091954

    申请日:2005-03-29

    IPC分类号: H04N7/12 H04N11/02

    CPC分类号: H04N19/53 G06T7/207 H04N19/56

    摘要: A method and apparatus is provided for generating a middle level motion vector in hierarchical motion estimation. TA second-resolution-frame motion vector is generated in a second resolution frame having a second resolution from a first-resolution-frame motion vector in a first resolution frame having a first resolution, the second resolution being higher than the first resolution. A local-search reference point is determined in the second-resolution frame based on the first-resolution-frame motion vector, and the second-resolution-frame motion vector is generated by performing a local search process on the second resolution frame based on the determined local-search reference point. The local search process is performed based on matching reference values for lower estimation blocks, each of the lower estimation blocks comprise pixel values of some portions of a current estimation block and a past estimation block. The current estimation block is an estimation block of a current frame and the past estimation block is an estimation block of a corresponding past frame. Accordingly, an amount of operations for the matching reference values can be reduced.

    摘要翻译: 提供了一种用于在分层运动估计中产生中间级运动矢量的方法和装置。 在具有第一分辨率的第一分辨率帧中的第一分辨率帧运动矢量具有第二分辨率的第二分辨率帧中产生TA第二分辨率帧运动矢量,第二分辨率高于第一分辨率。 基于第一分辨率帧运动矢量在第二分辨率帧中确定局部搜索参考点,并且基于第二分辨率帧运动矢量对第二分辨率帧执行本地搜索处理来生成第二分辨率帧运动矢量 确定的本地搜索参考点。 基于对于较低估计块的匹配参考值执行本地搜索处理,每个较低估计块包括当前估计块的一些部分的像素值和过去的估计块。 当前估计块是当前帧的估计块,而过去的估计块是对应的过去帧的估计块。 因此,可以减少用于匹配参考值的操作量。

    Method for hierarchical motion estimation
    5.
    发明授权
    Method for hierarchical motion estimation 失效
    分层运动估计方法

    公开(公告)号:US07433407B2

    公开(公告)日:2008-10-07

    申请号:US10950601

    申请日:2004-09-28

    摘要: A method for hierarchical motion estimation which can perform motion estimation in various block modes. According to the method, matching criterion values are calculated in units of an upper sub-block using matching criterion values calculated in units of a lowest-order sub-block and a block mode and a motion vector for motion estimation of an input block are determined using a plurality of matching criterion values for each of the various block modes.

    摘要翻译: 一种用于分层运动估计的方法,其可以以各种模块模式执行运动估计。 根据该方法,使用以最低阶子块和块模式为单位计算出的匹配标准值,以上位子块为单位计算匹配标准值,并且确定输入块的运动估计运动矢量 对于各种块模式中的每一种使用多个匹配准则值。

    Method and apparatus for predicting motion
    6.
    发明申请
    Method and apparatus for predicting motion 审中-公开
    用于预测运动的方法和装置

    公开(公告)号:US20050276327A1

    公开(公告)日:2005-12-15

    申请号:US11127216

    申请日:2005-05-12

    摘要: A method of and an apparatus for predicting a motion. The method of predicting a motion using a hierarchical motion estimation (ME) method includes: compensating for the motion using data stored in an internal memory that has been used in the motion estimation method, without accessing data stored in an external memory. Accordingly, the internal memory for use in the ME is used instead of accessing to the external memory, whereby a burden of a bus is reduced and a processing time for the MC can be reduced.

    摘要翻译: 一种用于预测运动的方法和装置。 使用分层运动估计(ME)方法来预测运动的方法包括:使用在运动估计方法中使用的内部存储器中存储的数据来补偿运动,而不访问存储在外部存储器中的数据。 因此,使用在ME中使用的内部存储器而不是访问外部存储器,由此减少了总线的负担,并且可以减少MC的处理时间。

    Method and apparatus for block-based image denoising
    7.
    发明授权
    Method and apparatus for block-based image denoising 有权
    基于块的图像去噪的方法和装置

    公开(公告)号:US08818126B2

    公开(公告)日:2014-08-26

    申请号:US12913909

    申请日:2010-10-28

    IPC分类号: G06K9/40 G06K9/36

    CPC分类号: G06T5/002 G06T2207/20021

    摘要: A block-based image denoising method includes determining similarities between a current block and reference blocks within a search range around the current block, from among certain-sized blocks divided from an input image; determining weights of the reference blocks with respect to the current block based on the similarities; and generating resultant blocks by denoising the current block with respect to every block of the input image based on the weights of the reference blocks.

    摘要翻译: 基于块的图像去噪方法包括:从当前块与当前块周围的搜索范围内的参考块之间确定与从输入图像分开的特定大小的块中的相似度; 基于相似度确定参考块相对于当前块的权重; 以及基于所述参考块的权重,通过对所述输入图像的每个块去除当前块来生成合成块。

    Prediction method, apparatus, and medium for video encoder
    8.
    发明授权
    Prediction method, apparatus, and medium for video encoder 失效
    视频编码器的预测方法,装置和介质

    公开(公告)号:US07532764B2

    公开(公告)日:2009-05-12

    申请号:US10855343

    申请日:2004-05-28

    IPC分类号: G06K9/46 H04N7/12

    摘要: A prediction method, apparatus, and medium including computer readable code, for calculating an average of intra-prediction costs or an average of inter-prediction costs of macroblocks of a received picture by encoding the received picture using an intra-prediction and/or inter-prediction in consideration of a type of the received picture, calculating a threshold value using the calculated average of intra-predication costs and/or inter-predication costs, and determining whether to perform intra-prediction on a subsequent picture based on the calculated threshold value. Accordingly, it is possible to considerably reduce the amount of computation that conventionally was required to encode a picture, without any deterioration in the encoding performance, by considerably reducing the number of macroblocks that need to undergo intra-prediction.

    摘要翻译: 一种包括计算机可读代码的预测方法,装置和介质,用于通过使用帧内预测和/或帧内编码来计算接收图像的宏块的帧内预测成本的平均值或帧间预测成本的平均值 - 考虑到所接收的图像的类型的预测,使用所计算的预测内成本和/或预估成本的平均值来计算阈值,以及基于所计算的阈值来确定是否对后续图像执行帧内预测 值。 因此,通过显着减少需要进行帧内预测的宏块的数量,可以显着地减少编码图像所需的计算量,而不会使编码性能下降。

    Memory access method and memory access device
    9.
    发明申请
    Memory access method and memory access device 审中-公开
    内存访问方式和内存访问设备

    公开(公告)号:US20050169378A1

    公开(公告)日:2005-08-04

    申请号:US11043041

    申请日:2005-01-27

    CPC分类号: H04N19/433 H04N19/57

    摘要: A memory access method and a memory access device are provided. The memory access method for performing motion compensation includes obtaining reference picture data corresponding to a bounding box from an external memory in units of bounding boxes, the bounding box includes a group of predetermined partitions among partitions in a macroblock to be motion-compensated. According to the method and device, the amount of memory access required for motion compensation in a video decoder can be reduced.

    摘要翻译: 提供存储器访问方法和存储器访问装置。 用于执行运动补偿的存储器访问方法包括以边界框为单位从外部存储器获取与边界框对应的参考图像数据,边界框包括要运动补偿的宏块中的分区中的一组预定分区。 根据该方法和装置,可以减少视频解码器中运动补偿所需的存储器访问量。

    Method and apparatus for sub-pixel motion estimation which reduces bit precision
    10.
    发明申请
    Method and apparatus for sub-pixel motion estimation which reduces bit precision 审中-公开
    用于子像素运动估计的方法和装置,其降低位精度

    公开(公告)号:US20050276330A1

    公开(公告)日:2005-12-15

    申请号:US11083986

    申请日:2005-03-21

    摘要: A method and apparatus are provided for sub-pixel motion estimation which performs sub-pixel motion estimation in which the precision of a difference between a pixel value of a block to be searched and a pixel value of a block of a search area, i.e., the number of bits of the difference, is reduced. The method for sub-pixel motion estimation in inter-prediction includes (a) determining one integer pixel corresponding to an estimated block by performing integer-pixel motion estimation, (b) receiving a value of a sub-pixel that is adjacent to the determined integer pixel and a value of an integer pixel of a block to be searched, (c) reducing a difference between the value of the sub-pixel and the value of the integer pixel and reducing a bit precision of the difference, and (d) calculating a similarity using the difference whose bit precision is reduced.

    摘要翻译: 提供了一种用于子像素运动估计的方法和装置,其执行子像素运动估计,其中要搜索的块的像素值与搜索区域的块的像素值之间的差的精度,即, 差的位数减少。 帧间预测中的子像素运动估计方法包括:(a)通过执行整数像素运动估计来确定与估计块对应的一个整数像素,(b)接收与所确定的子像素相邻的子像素的值 整数像素和要搜索的块的整数像素的值,(c)减小子像素的值和整数像素的值之间的差并减小差的位精度,以及(d) 使用比特精度降低的差异来计算相似度。