公开(公告)号：US20080181310A1

公开(公告)日：2008-07-31

申请号：US12018901

申请日：2008-01-24

申请人： Kwang-Pyo CHOI ,  Young-Hun Joo ,  Bong-Gon Kim ,  Yun-Je Oh ,  Byeungwoo Jeon ,  Bongsoo Jung

发明人： Kwang-Pyo CHOI ,  Young-Hun Joo ,  Bong-Gon Kim ,  Yun-Je Oh ,  Byeungwoo Jeon ,  Bongsoo Jung

IPC分类号： H04N7/26

CPC分类号： H04N19/57 ,  H04N19/433 ,  H04N19/533 ,  H04N19/557 ,  H04N19/56

摘要： A motion search method and apparatus for minimizing an off-chip memory access to reduce cycles for predicting a motion vector. A sum of absolute differences (SAD) calculation processing is performed, while an off-chip memory is accessed using Direct Memory Access (DMA). A position of a current macro block is determined if a frame is input and the length of a horizontal search line is set according to adjacent motion vectors and predetermined external parameters. The SADs are calculated by calculating medians of the adjacent motion vectors as a predictive motion vector, setting a vertical direction value of the predictive motion vector as an initial search line, and sequentially searching at least one horizontal search line, and determining a position of a minimum SAD from the at least one horizontal search line. The minimum SAD position is selected as a final motion vector.

摘要翻译： 一种用于最小化片外存储器访问以减少用于预测运动矢量的循环的运动搜索方法和装置。 执行绝对差（SAD）计算处理的总和，而使用直接存储器访问（DMA）访问片外存储器。 如果帧被输入并且根据相邻运动矢量和预定的外部参数来设置水平搜索线的长度，则确定当前宏块的位置。 通过计算相邻运动矢量的中值作为预测运动矢量来计算SAD，将预测运动矢量的垂直方向值设定为初始搜索线，并依次搜索至少一条水平搜索线，并且确定 来自至少一个水平搜索线的最小SAD。 选择最小SAD位置作为最终运动矢量。

公开(公告)号：US20080273597A1

公开(公告)日：2008-11-06

申请号：US12075975

申请日：2008-03-14

申请人： Petr Kovalenko ,  Kwang-Pyo Choi ,  Han-Sang Kim ,  Bong-Gon Kim ,  Yun-Je Oh ,  Young-Hun Joo

发明人： Petr Kovalenko ,  Kwang-Pyo Choi ,  Han-Sang Kim ,  Bong-Gon Kim ,  Yun-Je Oh ,  Young-Hun Joo

IPC分类号： H04N11/02

CPC分类号： H04N19/533 ,  H04N19/56

摘要： Disclosed is video encoding technology, and more particularly a method for searching for a motion vector in a procedure of estimating a motion in video frames. The motion vector search method includes the steps of: individually calculating error energies of a center point and vertices of a search pattern in a search window used in a previous frame with respect to a center of the search window established in the current frame, thereby designating a motion vector candidate point; either determining the motion vector candidate point as a moving point of a motion vector, or calculating error energies of a pair of neighboring points and re-establishing a motion vector candidate point; and either determining the re-established motion vector candidate point as a moving point of a motion vector, or re-establishing a search pattern, re-checking the error energies of the center point, the vertices and the neighboring points, and determining a moving point of a motion vector.

摘要翻译： 公开了视频编码技术，更具体地，涉及在估计视频帧中的运动的过程中搜索运动矢量的方法。 运动矢量搜索方法包括以下步骤：相对于在当前帧中建立的搜索窗口的中心，分别计算在先前帧中使用的搜索窗口中的中心点和搜索模式的顶点的误差能量，从而指定 运动矢量候选点; 将运动矢量候选点确定为运动矢量的移动点，或者计算一对相邻点的误差能量并重新建立运动矢量候选点; 并且确定重新建立的运动矢量候选点作为运动矢量的移动点，或者重新建立搜索模式，重新检查中心点，顶点和相邻点的误差能量，以及确定移动 运动矢量点。

公开(公告)号：US20100150451A1

公开(公告)日：2010-06-17

申请号：US12528367

申请日：2008-02-22

申请人： Kyung-Ho Chae ,  Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Ick Kim ,  Won-Jun Kim

发明人： Kyung-Ho Chae ,  Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Ick Kim ,  Won-Jun Kim

IPC分类号： G06K9/48

CPC分类号： G06T7/12 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/20132 ,  G06T2207/30221

摘要： Disclosed is a method for extracting a region-of-interest of a user in a multimedia mobile terminal. The method includes: setting a search region in an input picture input to the multimedia mobile terminal on a screen picture-to-screen picture basis, and extracting a group of boundary of a region-of-interest based on a brightness difference between the set search region and an environment around the set search region; determining boundary coordinates of the region-of-interest through learning during a predetermined frame among the extracted group of boundary coordinate candidates; and enlarging the region-of-interest having the determined boundary coordinates, and displaying the enlarged region-of-interest. As a result, a region the user is most interested in or pays more attention to than other regions on a screen is automatically extracted. Accordingly, it is possible for users to view pictures in such an efficient manner as to provide the users with an even better experience and understanding during viewing.

摘要翻译： 公开了一种用于提取多媒体移动终端中的用户的感兴趣区域的方法。 该方法包括：在屏幕画面到画面的基础上，在输入到多媒体移动终端的输入图像中设置搜索区域，并且基于该组合之间的亮度差提取兴趣区域的边界组 搜索区域和设置搜索区域周围的环境; 通过在提取的边界坐标候选组中的预定帧期间的学习来确定兴趣区域的边界坐标; 并且扩大具有确定的边界坐标的兴趣区域，并且显示放大的感兴趣区域。 因此，自动提取用户对屏幕上其他区域最感兴趣或更加重视的区域。 因此，用户可以以如此有效的方式查看图片，以便在观看期间为用户提供更好的体验和理解。

公开(公告)号：US20090207914A1

公开(公告)日：2009-08-20

申请号：US12389893

申请日：2009-02-20

申请人： Kwang-Pyo Choi ,  Yun-Je Oh ,  Young-Hun Joo ,  Byeung-Woo Jeon ,  Bong-Soo Jung ,  Kwang-Hyun Won

发明人： Kwang-Pyo Choi ,  Yun-Je Oh ,  Young-Hun Joo ,  Byeung-Woo Jeon ,  Bong-Soo Jung ,  Kwang-Hyun Won

IPC分类号： H04N7/26

CPC分类号： H04N7/26861 ,  H04N19/103 ,  H04N19/139 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61

摘要： Disclosed is a method of encoding a direct mode when coding moving images, the method includes finding a prediction and a cost for each of a plurality of direct modes including a backward-based temporal direct mode and a forward-based temporal direct mode with respect to a current block to be encoded and determining one mode having the lowest cost as a result of comparing the costs as an optimal encoding mode, thereby performing encoding the direct mode.

摘要翻译： 公开了一种在编码运动图像时对直接模式进行编码的方法，该方法包括针对包括基于后向时间直接模式和基于前向的时间直接模式的多个直接模式中的每一个寻找预测和成本 作为要编码的当前块，并且通过将成本作为最佳编码模式进行比较，确定具有最低成本的一种模式，由此执行直接模式的编码。

公开(公告)号：US20090196523A1

公开(公告)日：2009-08-06

申请号：US12360180

申请日：2009-01-27

申请人： Kwang-Pyo CHOI ,  Yun-Je Oh ,  Young-Hun Joo

发明人： Kwang-Pyo CHOI ,  Yun-Je Oh ,  Young-Hun Joo

IPC分类号： G06K9/40 ,  G06K9/32 ,  G06K9/36 ,  G06K9/48 ,  G06K9/00 ,  G06F3/048

CPC分类号： G06T3/403

摘要： A method and apparatus for generating a thumbnail image are provided so that the out-of-focus (OOF) information can be ascertained from looking at the thumbnail. An input image is decoded, and a degree of the amount of OOF of the decoded image is measured (OOF information). There is a determination as to whether or not there is an EXchangeable Image File (EXIF) information about the input image. In the presence of EXIF information, a thumbnail image is extracted from the EXIF information and as much an OOF effect is applied to the thumbnail image in accordance with the degree of OOF. In the absence of the EXIF information, a thumbnail image is generated by scaling down the decoded image at a down scaler and applying as much of an OOF effect is applied to the thumbnail image in accordance with the degree of OOF.

摘要翻译： 提供了一种用于生成缩略图图像的方法和装置，使得可以从查看缩略图来确定失焦（OOF）信息。 输入图像被解码，并且测量解码图像的OOF量的程度（OOF信息）。 有关于是否存在关于输入图像的可替换图像文件（EXIF）信息的确定。 在存在EXIF信息的情况下，从EXIF信息中提取缩略图，并且根据OOF的程度将OOF效果应用于缩略图图像。 在不存在EXIF信息的情况下，通过缩小缩小缩放器中的解码图像来生成缩略图图像，并且根据OOF的程度应用对缩略图图像应用多少的OOF效果。

公开(公告)号：US20080095461A1

公开(公告)日：2008-04-24

申请号：US11900279

申请日：2007-09-10

申请人： Han-Sang Kim ,  Chan-Yul Kim ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Young-Hun Joo

发明人： Han-Sang Kim ,  Chan-Yul Kim ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Young-Hun Joo

IPC分类号： G06K9/40

CPC分类号： H04N19/86

摘要： An apparatus for calculating a boundary strength on a macroblock basis to determine a filter condition area in a deblocking filter includes a memory unit for storing a table containing a filter condition area value for a boundary strength calculation, which correspond to each of a type value of a current macroblock and a type value of a neighbor macroblock, and storing a boundary strength calculation method per filter condition area, the deblocking filter for performing the boundary strength calculation according to a filter condition area with respect to an input macroblock, and a controller for determining a filter condition area value corresponding to a type value of a current macroblock input to the deblocking filter and a type value of its neighbor macroblock using the table when the boundary strength calculation is performed with respect to the current macroblock input to the deblocking filter.

摘要翻译： 用于计算宏块基础上的边界强度以确定去块滤波器中的滤波器条件区域的装置包括：存储单元，用于存储包含用于边界强度计算的滤波器条件区域值的表，其对应于 当前宏块和相邻宏块的类型值，并且存储每个过滤条件区域的边界强度计算方法，用于根据关于输入宏块的过滤条件区域执行边界强度计算的去块滤波器，以及用于 当输入到去块滤波器的当前宏块执行边界强度计算时，使用该表确定与去块滤波器输入的当前宏块的类型值对应的滤波器条件面积值及其相邻宏块的类型值。

公开(公告)号：US20080095240A1

公开(公告)日：2008-04-24

申请号：US11893811

申请日：2007-08-17

申请人： Kwang-Pyo Choi ,  Yun-Je Oh ,  Young-Hun Joo

发明人： Kwang-Pyo Choi ,  Yun-Je Oh ,  Young-Hun Joo

IPC分类号： H04B1/66

CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/43

摘要： Disclosed is a method for interpolating chrominance signals in a video encoder and a decoder. The method includes the steps of accessing a memory unit to load an integer pixel value with regard to a plurality of motion compensation blocks, searching for a location of a motion vector s to perform sub-pixel interpolation of chrominance signals regarding the blocks and performing ¼ sub-pixel interpolation by row-based and column-based shifting when the motion vector indicates a ¼ location pixel with regard to the blocks. Also disclosed is an apparatus for performing the interpolating method described and a computer program product which when loaded into a computer system performs the interpolating method described.

摘要翻译： 公开了一种用于在视频编码器和解码器中内插色度信号的方法。 该方法包括以下步骤：访问存储器单元以加载关于多个运动补偿块的整数像素值，搜索运动矢量s的位置以执行关于块的色度信号的子像素插值，并执行1/4 当运动矢量指示关于块的1/4位置像素时，通过基于行和列的移位进行子像素插值。 还公开了一种用于执行所描述的内插方法的装置和当被加载到计算机系统中时执行所描述的内插方法的计算机程序产品。

公开(公告)号：US08411959B2

公开(公告)日：2013-04-02

申请号：US12528367

申请日：2008-02-22

申请人： Kyung-Ho Chae ,  Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Ick Kim ,  Won-Jun Kim

发明人： Kyung-Ho Chae ,  Yong-Deok Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Ick Kim ,  Won-Jun Kim

IPC分类号： G06K9/48

CPC分类号： G06T7/12 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/20132 ,  G06T2207/30221

摘要： Disclosed is a method for extracting a region-of-interest of a user in a multimedia mobile terminal. The method includes: setting a search region in an input picture input to the multimedia mobile terminal on a screen picture-to-screen picture basis, and extracting a group of boundary of a region-of-interest based on a brightness difference between the set search region and an environment around the set search region; determining boundary coordinates of the region-of-interest through learning during a predetermined frame among the extracted group of boundary coordinate candidates; and enlarging the region-of-interest having the determined boundary coordinates, and displaying the enlarged region-of-interest. As a result, a region the user is most interested in or pays more attention to than other regions on a screen is automatically extracted. Accordingly, it is possible for users to view pictures in such an efficient manner as to provide the users with an even better experience and understanding during viewing.

摘要翻译： 公开了一种用于提取多媒体移动终端中的用户的感兴趣区域的方法。 该方法包括：在屏幕画面到画面的基础上，在输入到多媒体移动终端的输入图像中设置搜索区域，并且基于该组合之间的亮度差提取兴趣区域的边界组 搜索区域和设置搜索区域周围的环境; 通过在提取的边界坐标候选组中的预定帧期间的学习来确定兴趣区域的边界坐标; 并且扩大具有确定的边界坐标的兴趣区域，并且显示放大的感兴趣区域。 因此，自动提取用户对屏幕上其他区域最感兴趣或更加重视的区域。 因此，用户可以以如此有效的方式查看图片，以便在观看期间为用户提供更好的体验和理解。

公开(公告)号：US08300947B2

公开(公告)日：2012-10-30

申请号：US12322250

申请日：2009-01-30

申请人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

发明人： Young-O Park ,  Kwan-Woong Song ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh ,  Chang-Su Kim ,  Jae-Kyun Ahn

IPC分类号： G06K9/48

CPC分类号： G06K9/00234 ,  G06K9/00369 ,  G06K9/48

摘要： A method and apparatus for estimating the contour of a user object in a moving picture during video communications so that a personal background image is not provided during video communications. Information about center coordinates as well as a size of a face of the user object is extracted from a moving picture frame. Edges are extracted from the moving picture frame, and a boundary of a head of the user object is estimated using a semicircle. The boundaries of left and right shoulders and left and right arms of the user object are estimated using second-order function graphs that overlap a largest portion of the edges. An entire contour of the user object is estimated according to the boundaries of the head, the left and right shoulders, and the left and right arms of the user object.

摘要翻译： 一种用于在视频通信期间估计运动图像中的用户对象的轮廓的方法和装置，使得在视频通信期间不提供个人背景图像。 从运动图像帧中提取关于中心坐标以及用户对象的面部大小的信息。 从运动图像帧提取边缘，并且使用半圆来估计用户对象的头部的边界。 使用与边缘的最大部分重叠的二阶函数图来估计用户对象的左肩和右肩和左右臂的边界。 用户对象的整体轮廓根据用户对象的头部，左肩和右肩部以及左右臂的边界来估计。

公开(公告)号：US08036269B2

公开(公告)日：2011-10-11

申请号：US11975818

申请日：2007-10-22

申请人： Chan-Yul Kim ,  Han-Sang Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh

发明人： Chan-Yul Kim ,  Han-Sang Kim ,  Young-Hun Joo ,  Kwang-Pyo Choi ,  Yun-Je Oh

IPC分类号： H04N7/12

CPC分类号： H04N19/59 ,  H04N19/423 ,  H04N19/433 ,  H04N19/51 ,  H04N19/61

摘要： A method and apparatus for accessing a memory for processing moving pictures, which loads data from a frame buffer of an external memory, and uses a motion prediction technique. The method includes the steps of: loading, from the frame buffer, pixels of a relevant block of 8×8 size and extra pixel data necessary for an inter prediction while performing the inter prediction of a block of an 8×8 size following division of a macroblock, storing the pixels of the relevant block size of 8×8 and the extra pixel data in an internal cache memory. The stored pixels of the relevant block size of 8×8 and the stored extra pixel data are used; and then the stored pixels of the relevant block size of 8×8 and the stored extra pixel data stored in the cache memory are re-used during an inter prediction of the relevant block size of 8×8 and sub-blocks.

摘要翻译： 一种用于访问用于处理运动图像的存储器的方法和装置，其从外部存储器的帧缓冲器加载数据，并使用运动预测技术。 该方法包括以下步骤：从帧缓冲器中加载8×8大小的相关块的像素和进行帧间预测所需的额外像素数据，同时执行8×8大小的块的帧间预测， 宏块，将相关块大小为8×8的像素和额外像素数据存储在内部高速缓冲存储器中。 使用8×8相关块大小的存储像素和存储的额外像素数据; 然后在8×8和子块的相关块大小的帧间预测期间重新使用相关块大小为8×8的存储像素和存储在高速缓冲存储器中的存储的额外像素数据。