公开(公告)号：KR100856551B1

公开(公告)日：2008-09-04

申请号：KR1020070053493

申请日：2007-05-31

Applicant: 한국과학기술원

Inventor： 유회준 ,  황민수

IPC: H04N7/24

CPC classification number: H04N19/117 ,  H04N19/122 ,  H04N19/176 ,  H04N19/86

Abstract: A deblock filter and a deblock filtering method in H.264/AVC are provided to perform low power consumption and high performance filtering calculation by performing a horizontal-vertical interleave deblock filtering which satisfies H.264/AVC video coding standards and minimizing data transaction between an external memory and an inner SRAM. A deblock filter for removing a blocking effect, includes: an input controller which inputs video data to filter from an external memory in the order of luminance component data, blue chrominance component data, and red chrominance component data, and inputs data of sub-block units in sequence from a left column to a right column for a single macro block and from an upper line to a lower line in each column; a filtering magnitude/threshold value generator which calculates a filtering magnitude and a threshold value required for the filtering; an edge filtering calculator which is input with pixel data existing on opposite sides of an edge to filter for a sub-block input by the input controller and performs the filtering; an inner memory 1 and an inner memory 2 which store pixel data of a sub block neighboring left and upper sides of the present sub block to filter; a transpose register 1 and a transpose register 2 which buffer and transpose the video data; and an output controller which stores the data filtered by the edge filtering calculator in the unit of sub block in sequence to an external memory.

Abstract translation: 提供H.264 / AVC中的去块滤波器和去块滤波方法，通过执行满足H.264 / AVC视频编码标准的水平 - 垂直交织去块滤波来最小化数字交换，从而执行低功耗和高性能滤波计算 外部存储器和内部SRAM。 用于去除阻塞效应的去块滤波器包括：输入控制器，其以亮度分量数据，蓝色色度分量数据和红色色度分量数据的顺序从外部存储器输入视频数据进行滤波，并输入子块的数据 从左列到右列的单个单元，用于单个宏块，并且从每列的上一行到下一行; 滤波幅度/阈值发生器，其计算滤波所需的滤波幅度和阈值; 边缘滤波计算器，其输入存在于边缘的相对侧上的像素数据，以过滤由输入控制器输入的子块，并执行滤波; 内部存储器1和内部存储器2，其存储与当前子块的左侧和上侧相邻的子块的像素数据以进行滤波; 转置寄存器1和转置寄存器2，其缓冲和转置视频数据; 以及输出控制器，其将由边缘滤波计算器滤波的数据按子块的顺序存储到外部存储器。