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    이산 여현 변환/이산 정현 변환을 선택적으로 이용하는 부호화/복호화 장치 및 방법
    21.
    发明公开
    이산 여현 변환/이산 정현 변환을 선택적으로 이용하는 부호화/복호화 장치 및 방법 有权
    使用DESECETE COSINE / SINE TRANSTORM选择性编码/解码图像的装置和方法

    公开(公告)号：KR1020100038060A

    公开(公告)日：2010-04-12

    申请号：KR1020090093127

    申请日：2009-09-30

    Applicant: 한국전자통신연구원 ,  세종대학교산학협력단

    Inventor： 임성창 ,  정세윤 ,  최해철 ,  최진수 ,  홍진우 ,  이영렬 ,  김대연

    IPC: H04N19/12 ,  H04N19/625

    CPC classification number: G06T9/007 ,  G06T9/004 ,  H04N7/17318 ,  H04N19/12 ,  H04N19/132 ,  H04N19/147 ,  H04N19/149 ,  H04N19/19 ,  H04N19/46 ,  H04N19/70 ,  H04N21/236 ,  H04N19/625 ,  H04N19/63

    Abstract: PURPOSE: Encoding/decoding apparatus and method using DCT/DST selectively are provided to increase a compression ratio of an image block by performing inter/intra prediction between images for a fixed size blocks and then conversion and quantization. CONSTITUTION: A first conversion unit(220) converts a target image into a first conversion coefficient using DCT(Discrete Cosine Transform). A second conversion unit(230) converts the target image into a second conversion coefficient using DST(Discrete Sine Transform). A conversion method decision unit(260) selects the first or second conversion coefficients as a conversion coefficients for the target image. The first conversion unit creates a first decoding image for the target image based on the first conversion coefficient. The second conversion unit creates a decoding image for the target image based on the second conversion coefficient.

    Abstract translation: 目的：选择性地使用DCT / DST的编码/解码装置和方法被提供以通过对固定大小的块进行图像之间的帧间/帧内预测，​​然后进行转换和量化来增加图像块的压缩比。 构成：第一转换单元（220）使用DCT（离散余弦变换）将目标图像转换为第一转换系数。 第二转换单元（230）使用DST（离散正弦变换）将目标图像转换为第二转换系数。 转换方法决定单元（260）选择第一或第二转换系数作为目标图像的转换系数。 第一转换单元基于第一转换系数创建用于目标图像的第一解码图像。 第二转换单元基于第二转换系数创建目标图像的解码图像。

    컬러 동영상 신축 부호화와 복호화 방법 및 그 장치
    24.
    发明公开
    컬러 동영상 신축 부호화와 복호화 방법 및 그 장치 无效
    彩色视频可缩放编码和解码方法及其设备

    公开(公告)号：KR1020080093386A

    公开(公告)日：2008-10-21

    申请号：KR1020080034965

    申请日：2008-04-16

    Applicant: 한국전자통신연구원 ,  세종대학교산학협력단

    Inventor： 최해철 ,  지아지예 ,  김해광 ,  유정주

    IPC: H04N19/186 ,  H04N11/04

    CPC classification number: H04N19/59 ,  H04N19/186 ,  H04N19/33

    Abstract: A method and an apparatus for encoding and decoding color video scalability are provided to prevent unnecessary data amount from increasing when storing or transmitting encoded information, improve encoding efficiency by not doubly encoding the same information as already encoded information, prevent the same information as already decoded information from being doubly decoded and improve decoding efficiency. A color video scalability encoding method includes encoding a color image block of an improvement stratum by using lower stratum information. The encoding generates a color sign block pattern value according to quantization coefficient values of a residual color image block by using the lower stratum information. A color video scalability decoding method includes determining presence/absence of an improvement stratum having a different color format from that of a lower stratum in a received bit stream, and decoding a color image block of the improvement stratum by using the lower stratum information.

    Abstract translation: 提供了一种用于编码和解码彩色视频可伸缩性的方法和装置，以防止在存储或发送编码信息时不必要的数据量增加，通过不对已编码信息的相同信息进行双重编码来提高编码效率，防止已经解码的相同信息 信息被双重解码，提高解码效率。 彩色视频可缩放编码方法包括通过使用较低层信息对改进层的彩色图像块进行编码。 编码通过使用较低层信息根据残差彩色图像块的量化系数值生成颜色符号块图案值。 彩色视频可伸缩性解码方法包括：在接收的比特流中确定具有与下层的颜色格式不同的改进层的存在/不存在，以及通过使用较低层信息来对改进层的彩色图像块进行解码。

    잔여계수의 상관성에 따라 변환기를 선택적으로 이용한부호화/복호화 장치 및 그 방법
    25.
    发明公开
    잔여계수의 상관성에 따라 변환기를 선택적으로 이용한부호화/복호화 장치 및 그 방법 有权
    使用替代转换器根据残留信号的关联编码和解码的装置和方法

    公开(公告)号：KR1020080026463A

    公开(公告)日：2008-03-25

    申请号：KR1020070036089

    申请日：2007-04-12

    Applicant: 한국전자통신연구원 ,  광운대학교 산학협력단 ,  세종대학교산학협력단

    Inventor： 김대연 ,  임성창 ,  서정일 ,  백승권 ,  장인선 ,  장대영 ,  김재곤 ,  문경애 ,  홍진우 ,  김진웅 ,  오승준 ,  안창범 ,  정세윤 ,  최해철 ,  이영렬 ,  심동규

    IPC: H04N19/12 ,  H04N19/625

    CPC classification number: H04N19/103 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

    Abstract: An apparatus for encoding and decoding by using a converter alternatively according to the correlation of residual coefficients and a method thereof are provided to select a converter with a highest compression rate by perform an RD(Rate-Distortion) cost optimization using DCT(Discrete Cosine Transform) and DST(Discrete Sine Transform) in generating a quantized conversion coefficient through converters and quantizers after prediction between images or within the images in a predetermined size of block, thereby improving the compression rate of an image block. A first converter(31-34) performs the DCT(Discrete Cosine Transform) in a block unit, first quantization, first inverse quantization and IDCT(Interger-approximated Discrete Cosine Inverse Transform) of residual coefficients which are generated after performing prediction between images or within the images. A second converter(35-38) performs the DST(Discrete Sine Transform) in the block unit, second quantization, second inverse quantization, and IDST(Interger-approximated Discrete Sine Inverse Transform) of the residual coefficients. A selection unit(39) performs RD Cost(Rate-Distortion Cost) to select a converter with a high compression rate by block, and a display unit(40) displays converter information selected by the selection unit on a corresponding flag bit in a macro block unit.

    Abstract translation: 提供了根据剩余系数的相关性或其方法替代地使用转换器进行编码和解码的装置，以通过使用DCT（离散余弦变换）进行RD（速率 - 失真）成本优化来选择具有最高压缩率的转换器 ）和DST（离散正弦变换）中，通过转换器和量化器在预测图像之后或在预定大小的块内的图像内生成量化转换系数，从而提高图像块的压缩率。 第一转换器（31-34）以块单位进行DCT（离散余弦变换），在执行图像之间的预测之后产生的剩余系数的第一量化，第一逆量化和IDCT（Interger近似离散余弦逆变换） 在图像内。 第二转换器（35-38）以剩余系数的块单位，第二量化，第二逆量化和IDST（Interger-Neared离散正弦逆变换）执行DST（离散正弦变换）。 选择单元（39）执行RD成本（速率失真成本），以块的方式选择具有高压缩率的转换器，并且显示单元（40）将由选择单元选择的转换器信息显示在宏中的相应标志位上 块单位。

    날 유닛 타입 표시방법 및 그에 따른 비트스트림 전달장치및 리던던트 슬라이스 부호화 장치
    26.
    发明公开
    날 유닛 타입 표시방법 및 그에 따른 비트스트림 전달장치및 리던던트 슬라이스 부호화 장치 失效
    方法定义了单位类型和系统，并将冗余码片编码

    公开(公告)号：KR1020070074503A

    公开(公告)日：2007-07-12

    申请号：KR1020070002637

    申请日：2007-01-09

    Applicant: 한국전자통신연구원 ,  세종대학교산학협력단

    Inventor： 최해철 ,  김재곤 ,  홍진우 ,  김해광 ,  지아지예

    IPC: H04N19/174 ,  H04N19/30

    CPC classification number: H04N19/89 ,  H04N19/174 ,  H04N19/65 ,  H04N19/70

    Abstract: A NAL(Network Abstraction Layer) unit type display method, a bit stream transmission apparatus according to the same, and a redundant slice coding apparatus are provided to indicate that a current NAL unit is a redundant coded picture by using No. 19 of a NAL unit type when an auxiliary coded picture is not used. A header parsing unit(311) includes a NAL unit header in which a NAL unit type indicating a redundant coded picture is recorded, parses the NAL unit header of a coded bit stream, and judges whether a NAL unit is a redundant coded picture. When the NAL unit is the redundant coded picture as a result of the header parsing unit(311), a transmission determining unit(312) determines whether to transmit the NAL unit according to a state of a network in which the NAL unit is transmitted.

    Abstract translation: 提供NAL（网络抽象层）单元类型显示方法，根据它的位流发送装置和冗余片编码装置，以通过使用NAL的第19号来指示当前NAL单元是冗余编码图 不使用辅助编码图像时的单位类型。 标题解析单元（311）包括NAL单元报头，其中记录指示冗余编码图像的NAL单元类型，解析编码比特流的NAL单元报头，并且判断NAL单元是否是冗余编码图像。 作为标题解析单元（311）的结果，当NAL单元是冗余编码图像时，发送确定单元（312）根据发送NAL单元的网络的状态确定是否发送NAL单元。

    폴리페이즈 다운 샘플링기반 리던던트 슬라이스 코딩 방법및 그 방법을 이용하는 코덱
    30.
    发明公开
    폴리페이즈 다운 샘플링기반 리던던트 슬라이스 코딩 방법및 그 방법을 이용하는 코덱 失效
    使用多相染色体进行冗余图像编码的方法及其编码器

    公开(公告)号：KR1020070011149A

    公开(公告)日：2007-01-24

    申请号：KR1020060067094

    申请日：2006-07-18

    Applicant: 한국전자통신연구원 ,  세종대학교산학협력단

    Inventor： 최해철 ,  김재곤 ,  홍진우 ,  김해광 ,  지아지예

    IPC: H04N19/137 ,  H04N19/51

    CPC classification number: H04N19/59 ,  H04N19/174 ,  H04N19/61 ,  H04N19/65 ,  H04N19/70

    Abstract: A redundant slice coding method based on PD(Polyphase Down-sampling) and a CODEC using the method are provided to adaptively vary the quantity of transmitted DCT(Discrete Cosine Transform) coefficients using the PD based redundant slice coding method to improve error resilience of scalable video coding and coding efficiency. A PD based redundant slice encoder includes a PD coding unit(110), a quantizer(120), and a reference block generator(130). The PD coding unit polyphase-down-samples a residual block corresponding to a current block and a predicted block to reconstruct the residual block into four regions. The quantizer transforms and quantizes at least one of the reconstructed regions. The reference block generator generates a reference picture based on a value obtained by inversely transforming and inversely quantizing the quantized region and then inversely polyphase down-sampling the region.

    Abstract translation: 提供了基于PD（多相下采样）和使用该方法的CODEC的冗余片编码方法，以使用基于PD的冗余片编码方法自适应地改变发射DCT（离散余弦变换）系数的数量，以提高可缩放 视频编码和编码效率。 基于PD的冗余片编码器包括PD编码单元（110），量化器（120）和参考块发生器（130）。 PD编码单元对与当前块和预测块相对应的残差块进行多相降样采样，以将残余块重建为四个区域。 量化器对至少一个重建区域进行变换和量化。 参考块生成器基于通过对量化区域进行逆变换和逆量化获得的值并且然后对该区域进行反向多相下采样来生成参考图像。

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