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    • 4. 发明申请
    • MULTI-MODE ALPHA IMAG EPROCESSING
    • 多模式阿尔法图像去噪
    • WO2005059838A1
    • 2005-06-30
    • PCT/SE2004/001921
    • 2004-12-17
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)STRÖM, JacobAKENINE-MÖLLER, Tomas
    • STRÖM, JacobAKENINE-MÖLLER, Tomas
    • G06T9/00
    • G06T9/008G06T9/00H04N19/103H04N19/136H04N19/154H04N19/176H04N19/21H04N19/94
    • An alpha image encoding and decoding scheme operable according two different modes is disclosed. In the encoding, an alpha image is decomposed into alpha image blocks (600) comprising image elements (610). The blocks (600) are compressed into block representations (700) according to one of the two compression modes. A block representation (700) comprises a color codeword (720), an intensity codeword (730), an alpha codeword (740) and a sequence (750) of image element associated indices indicative of one of the codewords (730, 740). The compression and decompression mode to use for a block (600) is determined based on the alpha codeword (740). In a high alpha-resolution mode, the index sequence (750) comprises alpha indices selecting one of the quantized alpha values (740A, 740B) of the alpha codeword (740) and intensity indices selecting an intensity modifier from a modifier set represented by the intensity codeword (730). In a high luminance-resolution mode, the index sequence (750) only comprises intensity indices.
    • 公开了可根据两种不同模式操作的阿尔法图像编码和解码方案。 在编码中,α图像被分解为包括图像元素(610)的α图像块(600)。 根据两种压缩模式之一,块(600)被压缩成块表示(700)。 块表示(700)包括指示码字(730,740)之一的图像元素相关索引的颜色码字(720),强度码字(730),阿尔法码字(740)和序列(750)。 基于α码字(740)确定用于块(600)的压缩和解压缩模式。 在高α分辨率模式中,索引序列(750)包括选择阿尔法码字(740)的量化的α值(740A,740B)中的一个的α索引,并且强度指数从由 强度码字(730)。 在高亮度分辨率模式中,索引序列(750)仅包括强度指数。
    • 5. 发明申请
    • VIDEO CODING AND DECODING METHOD
    • 视频编码和解码方法
    • WO2004059983A1
    • 2004-07-15
    • PCT/IB2003/006212
    • 2003-12-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.DUFOUR, CécileMARQUANT, GwenaëlleVALENTE, Stéphane
    • DUFOUR, CécileMARQUANT, GwenaëlleVALENTE, Stéphane
    • H04N7/26
    • H04N19/21H04N19/17H04N19/61
    • The invention relates to a video coding method applied to an original video sequence in which the successive frames or video object planes (VOPs) include one or several arbitrarily shaped video objects (VOs) defined by their texture and motion components and an additional shape component. According to the invention, said method comprises a non object-oriented coding step, applied to a small number of frames of the video sequence, an object-oriented coding step, applied to all the frames of the sequence that follow said small number of frames, and a sequencing step, provided for controlling that said non object-oriented and object-oriented coding steps are respectively applied to the appropriate frames, in order to generate a coded bitstream including non object-oriented coded data corresponding to said small number of frames followed by object-oriented coded data corresponding to said following frames. The invention also relates to a corresponding video decoding method.
    • 本发明涉及一种应用于原始视频序列的视频编码方法,其中连续帧或视频对象平面(VOP)包括由其纹理和运动分量定义的一个或几个任意形状的视频对象(VO)和附加形状分量。 根据本发明,所述方法包括应用于视频序列的少数帧的非面向对象编码步骤,面向对象的编码步骤,应用于所述少量帧之后的序列的所有帧 以及排序步骤,被提供用于控制所述非面向对象和面向对象的编码步骤分别应用于适当的帧,以便生成包括对应于所述少量帧的非面向对象编码数据的编码比特流 随后是对应于所述后续帧的面向对象的编码数据。 本发明还涉及相应的视频解码方法。
    • 9. 发明申请
    • METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS
    • 确定变压器系数的二进制码的方法
    • WO2013070974A3
    • 2014-01-03
    • PCT/US2012064236
    • 2012-11-08
    • MOTOROLA MOBILITY LLC
    • LOU JIANWANG LIMIN
    • H04N7/30H04N7/26
    • H04N19/18H04N19/00393H04N19/21H04N19/60H04N19/70H04N19/91
    • A system is provided for determining a binary codeword for a symbol representing a transform coefficient within transform units (TUs) that divide up coding units (CUs) in a High Efficiency Video Coding (HEVC) system. The system determines a truncated rice prefix and, when a parameter variable is greater than zero, determines a truncated rice suffix for the symbol. The system determines a main prefix either from the truncated rice prefix alone, or from a combination of the truncated rice prefix and the truncated rice suffix. When the main prefix is the same as a comparison string, the system also determines a main suffix. The system determines the final binary codeword for the symbol either from the main prefix alone, or from a combination of the main prefix and the main suffix.
    • 提供一种系统,用于确定代表在高效率视频编码(HEVC)系统中划分编码单元(CU)的变换单元(TU)内的变换系数的符号的二进制码字。 系统确定截断的米前缀,并且当参数变量大于零时,确定符号的截断的米后缀。 该系统单独从截短的米前缀或从截短的米前缀和截短的米后缀的组合中确定主要前缀。 当主前缀与比较字符串相同时,系统还会确定主后缀。 该系统从单独的主前缀或主要前缀和主后缀的组合确定符号的最终二进制码字。
    • 10. 发明申请
    • CONTEXT ADAPTIVE ENTROPY CODING WITH A REDUCED INITIALIZATION VALUE SET
    • 上下文自适应熵编码与减少的初始化值集
    • WO2013109885A1
    • 2013-07-25
    • PCT/US2013/022138
    • 2013-01-18
    • QUALCOMM INCORPORATED
    • GUO, LiweiCOBAN, Muhammed ZeydWANG, XianglinKARCZEWICZ, Marta
    • H03M7/40H04N7/30H04N7/26
    • H04N19/50H03M7/4018H04N19/13H04N19/21H04N19/60H04N19/91
    • Techniques for coding data, such as, e.g., video data, include coding a first syntax element, conforming to a particular type of syntax element, of a first slice of video data, conforming to a first slice type, using an initialization value set. The techniques further include coding a second syntax element, conforming to the same type of syntax element, of a second slice of video data, conforming to a second slice type, using the same initialization value set. In this example, the first slice type may be different from the second slice type. Also in this example, at least one of the first slice type and the second slice type may be a temporally predicted slice type. For example, the at least one of the first and second slice types may be a unidirectional inter-prediction (P) slice type, or a bi-directional inter-prediction (B) slice type.
    • 用于编码数据(例如视频数据)的技术包括使用初始化值集来编码符合第一片类型的第一片视频数据的符合特定类型的语法元素的第一语法元素。 这些技术还包括使用相同的初始化值集合来编码符合第二片类型的视频数据的第二片段的符合相同类型的语法元素的第二语法元素。 在该示例中,第一切片类型可以不同于第二切片类型。 同样在该示例中,第一切片类型和第二切片类型中的至少一个可以是时间预测切片类型。 例如,第一和第二切片类型中的至少一个可以是单向帧间预测(P)切片类型或双向帧间预测(B)切片类型。