公开(公告)号：EP0858206B1

公开(公告)日：2005-10-19

申请号：EP97830041.6

申请日：1997-02-06

Applicant: STMicroelectronics S.r.l.

Inventor： Pau, Danilo ,  Bruni, Roberta ,  Sannino, Roberto

IPC: H04N1/00 ,  H04N7/50 ,  H04N7/28

CPC classification number: G06T9/008 ,  G06T9/40 ,  H04N19/423 ,  H04N19/61 ,  H04N19/94

公开(公告)号：EP1511311A1

公开(公告)日：2005-03-02

申请号：EP03425560.4

申请日：2003-08-26

Applicant: STMicroelectronics S.r.l.

Inventor： Alfonso, Daniele ,  Pau, Danilo ,  Priviterra, Elio ,  Schiavone, Angelo

IPC: H04N7/01 ,  H04N5/44

CPC classification number: H04N7/014 ,  H04N7/012 ,  H04N7/0142

Abstract: To carry out de-interlacing of digital images there is provided a spatial-type de-interlacing process to be applied to a digital image (FRM) for obtaining a spatial reconstruction (Tsp). Furthermore, to said digital image (FRM) there are also applied one or more temporal-type de-interlacing processes for obtaining one or more temporal reconstructions (Tub, Tuf, Tbb and Tbn), and said spatial reconstruction (Tsp) and said one or more temporal reconstructions (Tub, Tuf, Tbb and Tbn) are sent to a decision module (D). Said decision module applies a cost function (var) to said spatial reconstruction (Tsp) and said temporal reconstructions (Tub, Tuf, Tbb and Tbn) and chooses from among said spatial reconstruction (Tsp) and said temporal reconstructions (Tub, Tuf, Tbb and Tbn) the one that minimizes said cost function (var). Preferential application is to display systems, in particular displays of a cathode-ray type, liquid-crystal type, and plasma type which use a mechanism of progressive scan.

Abstract translation: 为了实现数字图像的去隔行，提供了一种应用于数字图像（FRM）以获得空间重建（Tsp）的空间型去隔行处理。 此外，对于所述数字图像（FRM），还应用一个或多个时间型去隔行处理以获得一个或多个时间重建（Tub，Tuf，Tbb和Tbn），并且所述空间重建（Tsp）和所述一个 或更多的时间重建（Tub，Tuf，Tbb和Tbn）被发送到决策模块（D）。 所述决策模块对所述空间重建（Tsp）和所述时间重构（Tub，Tuf，Tbb和Tbn）应用成本函数（var）并从所述空间重构（Tsp）和所述时间重构（Tub，Tuf，Tbb 和Tbn）最小化所述成本函数（var）的那个。 优选应用是显示系统，特别是使用逐行扫描机制的阴极射线型，液晶型和等离子型显示器。

公开(公告)号：EP1231793A1

公开(公告)日：2002-08-14

申请号：EP01830084.8

申请日：2001-02-09

Applicant: STMicroelectronics S.r.l.

Inventor： Graziani, Andrea ,  Celetto, Luca ,  Alfonso, Daniele ,  Basso, Fabrizio ,  Cremonesi, Alessandro ,  Pau, Danilo

IPC: H04N7/26

CPC classification number: H04N19/40 ,  H04N19/90

Abstract: In order to generate, starting from an input MPEG bitstream (IS), an output MPEG bitstream (OS) having at least one entity chosen among syntax, resolution, and bitrate modified with respect to the input bitstream (IS), first portions and second portions are distinguished in the input bitstream (IS), which respectively substantially do not affect and do affect the variation in bitrate. When at least one between the syntax and the resolution is to be modified, the first portions of the input bitstream (IS) are subjected (104) to the required translation, then transferring (134) said first portions subjected to syntax and/or resolution translation to the output bitstream (OS). When the resolution is left unaltered, the second portions are transferred (138) from the input bitstream (IS) to the output bitstream (OS) in the substantial absence of processing operations. When the resolution is changed, the second portions of the input bitstream (IS) are subjected (108 to 130) to a filtering in the domain of the discrete cosine transform (DCT).

Abstract translation: 为了产生，从在输入MPEG位数据流（IS）开始输出MPEG位流（OS）具有至少一个实体选择中的语法，分辨率和比特率相对于输入比特流改性（IS），第一部分和第二 部分是在输入比特流（IS），分别，它们基本上不影响和做影响比特率的变化区别开来。 当语法和分辨率之间的至少一个要被修改，则输入比特流的（IS）的第一部分进行（104）到所需要的翻译，然后转移环（134）所述第一部分进行语法和/或分辨率 翻译到输出比特流（OS）。 当分辨率保持不变，第二部分从输入比特流（IS）在基本上不存在处理操作的输出位流（OS）转印（138）。 当分辨率改变时，输入比特流（IS）的所述第二部分进行（108至130），以过滤在所述离散余弦变换（DCT）的结构域。

公开(公告)号：EP1152621A1

公开(公告)日：2001-11-07

申请号：EP00830332.3

申请日：2000-05-05

Applicant: STMicroelectronics S.r.l.

Inventor： Pau, Danilo ,  Piccinelli, Emiliano ,  Rovati, Fabrizio

IPC: H04N7/26 ,  H04N7/36 ,  H04N5/14

CPC classification number: H04N5/145 ,  H04N19/51 ,  H04N19/56

Abstract: Motion estimation in video signals (10) organized in successive frames divided into macroblocks is carried out by means of the identification of motion vectors. In a first identification phase, starting from a current motion vector, a best motion vector predictor is identified, being chosen from a set of candidates. The best predictor thus identified is then subjected to a second refining phase. The aforesaid set of candidates is identified by selecting vectors belonging to macroblocks close to the said current vector within the current frame and the preceding frame. Preferably, the refining phase comprises the definition of a grid of n points centred on the central position to which the best motion vector points and the distance of the points of the grid from the said centre is defined as a function of the matching error (typically consisting of an SAD function) defined in the first identification phase. Application to the IPB and APM operating modes of the H.263+ video standard is envisaged.

Abstract translation: 通过运动矢量的识别来执行以划分为宏块的连续帧中组织的视频信号（10）中的运动估计。 在从当前运动矢量开始的第一识别阶段中，从一组候选中选出最佳运动矢量预测器。 然后将如此确定的最佳预测因子进行第二精炼阶段。 通过选择属于当前帧和前一帧中的当前向量附近的宏块的矢量来识别上述候选集。 优选地，精炼阶段包括以中心位置为中心的n个点的网格的定义，其中最佳运动向量点和网格的点与所述中心的距离被定义为匹配误差的函数（通常 由SAD功能组成）在第一个识别阶段中定义。 设想了对H.263 +视频标准的IPB和APM操作模式的应用。

公开(公告)号：EP1139669A1

公开(公告)日：2001-10-04

申请号：EP00106589.5

申请日：2000-03-28

Applicant: STMicroelectronics S.r.l.

Inventor： Rovati, Fabrizio ,  Pau, Danilo ,  Piccinelli, Emiliano

IPC: H04N7/26

CPC classification number: H04N19/53 ,  H04N19/433

Abstract: A coprocessor circuit for processing image data in digital form, including:

a motion vector controller block (10) for generating, starting from said image data, motion vector (MV) values including predictor data and macroblock data relating to a current macroblock of said image data to be estimated, said prediction data and macroblock data being adapted to be stored at respective memory addresses,
an address generator block (101) for extracting said respective addresses from said motion vector (MV) values,
a predictor fetch block (102) for retrieving said predictor data based on respective addresses extracted by said address generator block (101),
a current macroblock fetch and distengine block (104) for retrieving said macroblock data based on respective addresses extracted by said address generator block (10) and for processing said macroblock data according to a given function, and
a decision block (105) for collecting said retrieved data as partial results and selecting the best result therefrom.

Abstract translation: 一种用于处理数字形式的图像数据的协处理器电路，包括：运动矢量控制器块（10），用于从所述图像数据开始，生成包括与所述图像的当前宏块相关的预测数据和宏块数据的运动矢量（MV）值 要估计的数据，所述预测数据和宏块数据适于存储在相应存储器地址处，用于从所述运动矢量（MV）值提取所述各个地址的地址生成器块（101），用于 基于由所述地址生成器块（101）提取的相应地址，根据由所述地址生成器块（10）提取的相应地址来检索所述宏块数据的当前宏块获取和分发发送块（104）来检索所述预测器数据，并处理所述 根据给定功能的宏块数据，以及用于将所述检索到的数据作为部分结果收集并选择最佳值的判定块（105） 从它那里。

公开(公告)号：EP1134981A1

公开(公告)日：2001-09-19

申请号：EP00830200.2

申请日：2000-03-17

Applicant: STMicroelectronics S.r.l.

Inventor： Piccinelli, Emiliano ,  Rovati, Fabrizio ,  Pau, Danilo

IPC: H04N7/26

CPC classification number: H04N19/57 ,  H04N19/137 ,  H04N19/51

Abstract: A method of estimating the motion field of a digital picture sequence comprises subdividing a current picture to examine in an integer number of macroblocks, for each macroblock of the current picture determining a search window centered on a macroblock of a preceding picture placed in the same position of the considered macroblock of the current picture, carrying out a motion estimation between the considered macroblock of the current picture and the macroblock most similar to it included in the window. At least a dimension of the search window is established in function of the corresponding dimension of the search window used for the preceding picture, the estimated motion field of the preceding picture and certain threshold values.

Abstract translation: 估计数字图像序列的运动场的方法包括细分当前图像以检查整数个宏块，对于当前图像的每个宏块，确定以位于相同位置的前一图像的宏块为中心的搜索窗口 当前图像的所考虑的宏块，执行当前图片的所考虑的宏块与包括在窗口中最类似的宏块之间的运动估计。 根据用于前一图像的搜索窗口的对应维度，前一图像的估计运动场和某些阈值来确定搜索窗口的至少维度。

公开(公告)号：EP0785624B1

公开(公告)日：2001-08-29

申请号：EP96830018.6

申请日：1996-01-19

Applicant: STMicroelectronics S.r.l.

Inventor： Pau, Danilo

IPC: H03K5/135 ,  H03K5/156 ,  H03K3/70

CPC classification number: H03K3/70 ,  H03K5/135 ,  H03K5/1565

公开(公告)号：EP1083751A1

公开(公告)日：2001-03-14

申请号：EP99830560.1

申请日：1999-09-08

Applicant: STMicroelectronics S.r.l.

Inventor： Pau, Danilo ,  Bortot, Luca ,  Sacchi, Maria Luisa

IPC: H04N7/50

CPC classification number: H04N19/42 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/15 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61

Abstract: A method of measuring the activity of a macroblock of a picture in the direct cosine transform domain of values assumed by a selected component of the video signal comprises

a) separately storing in a memory blocks of data into which is divided a macroblock in the discrete cosine transform domain before quantization;
b) reading from said memory the data of each of the blocks constituting said macroblock representing said selected component in the discrete cosine transform domain obtaining the respective coefficients;
c) multipliying the absolute value of said coefficients by a selected mask of words of a number not exceeding the number of words constituting the block;
d) summing the results of said moltiplications producing an activity coefficient for each of the blocks constituting said macroblock;
e) calculating a first activity coefficient of the macroblock (actj) as the sum of said activity coefficients produced for each block;
f) calculating a normalized activity value of the macroblock as the ratio between the sum of the double of said activity coefficient (actj) with a mean activity (mean_actj) relative to the preceding coded frame and the sum of the double of the coefficient mean_actj with the activity coefficient actj.

Abstract translation: 测量由视频信号的选定分量假设的值的直接余弦变换域中的图像的宏块的活动性的方法包括：a）分别存储在其中被划分为离散余弦中的宏块的数据的存储块中 量化前的变换域; b）从所述存储器读取构成所述宏块的每个块的数据，所述宏块表示所述离散余弦变换域中的所述选择的分量，获得相应的系数; c）将所述系数的绝对值乘以不超过构成块的字数的所选择的字的掩码; d）对构成所述宏块的每个块产生活动系数的所述摩擦的结果求和; e）将所述宏块（actj）的第一活动系数计算为为每个块产生的所述活动系数的总和; f）将所述宏块的归一化活动值计算为所述活动系数（actj）的两倍之和与相对于先前编码帧的平均活动度（mean_actj）之间的比率以及系数mean_actj的双倍与 活动系数actj。

公开(公告)号：EP1081959A1

公开(公告)日：2001-03-07

申请号：EP99830545.2

申请日：1999-09-03

Applicant: STMicroelectronics S.r.l.

Inventor： Pau, Danilo ,  Pezzoni, Luca ,  Rovati, Fabrizio ,  Sirtori, Daniele

IPC: H04N7/26 ,  H04N7/36

CPC classification number: H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/85

Abstract: A method of recognizing a progressive or an interlaced content of video pictures during their processing in a coder, comprises the following operations on at least on one of the components (luminance or chrominance) of the video signal:

a) defining a macroblock belonging to a frame of the preceding picture having dimensions R*S pixels, a half of it (R/2)*S being placed on the Top field Tp and the other half on the Bottom field Bp ;
b) for the chosen component of the video signal, calculating a first pair of coefficients (COEFF_1, COEFF_2) equivalent to

the sum, extended to all the columns and to all the even row of said macroblock, of the absolute values of the differences among the values assumed by said component of the video signal in the pixels of the same column and of consecutive rows belonging to the Top semi-frame and Bottom semi-frame, respectively, and
the sum, extended to all the columns and to each fourth row of said macroblock, of the absolute values of the differences among the values assumed by said component of the video signal in the pixels of the same column and of consecutive rows of the same parity belonging to the Top semi-frame and Bottom semi-frame respectively;

c) verifying whether the first one of the coefficients of said pair is greater than or equal to a prefixed first real positive number of times (a) of the second coefficient, incrementing a first counter (CONT_1) at each positive verification;
d) incrementing a second counter (NUM_MACROBLOCK) at each macroblock so tested;
e) calculating for each row of each Top semi-frame a second pair of coefficients (COEFF_3, COEFF_4) equivalent to

for each row the sum, extended to all the columns of each semi-frame of the absolute values of the differences among the values assumed by said component of the video signal in pixels of the Bottom semi-frame of the preceding picture and of the Bottom semi-frame of the current picture, belonging to the row following the considered row and to the same column, and
the sum, extended to all the columns of each semi-frame of the absolute values of the differences among the values assumed by said component of the video signal in pixels of the same column and, respectively, of said row of the Top semi-frame of the preceding picture and the row following the considered row, belonging to the Bottom semi-frame of the current picture, respectively;

f) verifying whether the second coefficient of said second pair is grater than or equal to a second prefixed real positive number of times (β) the first coefficient of said second pair, incrementing a third counter (CONT_2) at each positive verification;
g) incrementing a fourth counter (NUM_RIGHE) at each row so tested;
verifying whether the content of the first counter (CONT_1) is greater than or equal to a third prefixed real positive number of times (γ) the content of second counter (NUM_MACROBLOCK) and whether, at the same time, the content of the third counter (CONT 2) is greater than or equal to a fourth prefixed real positive number of times (δ) the content of the fourth counter (NUM_RIGHE): if so, considerating the frame composed of said Top and Bottom semi-frame an interlaced one, if not a progressive one.

Abstract translation: 认识到他们的处理过程中的渐进或视频图像的隔行扫描内容在一个编码器的方法，包括在所述视频信号的分量（亮度或色度）的至少一个以下操作： - 定义属于一个宏块一个） 具有尺寸preceding-图象的帧R * S像素，它（R / 2）* S被放置在顶场Tp和另一半上底场bp的半; b）该视频信号的所选择的分量，计算中相当于之和的第一对系数（COEFF_1，COEFF_2），延伸到所有的列和所有的偶数行。所述宏块的，的差的绝对值的 由在同一列中的和分别属于顶半帧和底半帧，连续行的像素的视频信号的所述部件，并且总和假定的值，扩展到所有的列和每个第四行 说宏块由在同一列中的像素与分别属于顶半帧和底半帧中的相同奇偶性的连续行的视频信号的所述部件假设值之间的差的绝对值的值，的 ; c）是否验证所述系数的计算对大于或等于所述第二系数的时间（a）一种前缀第一实正数，递增在每个正验证一个第一计数器（CONT_1）中的第一个; D）在递增进行测试，从而每个宏块的第二计数器（NUM_MACROBLOCK）; e）计算为每个顶半帧的每行相当于第二对系数（COEFF_3，COEFF_4）每行的总和，扩展到的值之间的差的绝对值的每个半帧的所有列 由视频信号的所述部件在preceding-图片的底部半帧的像素与当前画面的底部半帧的假设，属于行继考虑行和同一列中，并且该和， 分别延伸到由所述视频信号的所述部件在同一列中的像素假设的值和，之间的差的绝对值的每个半帧的所有列，则preceding-的顶半帧的所述行的 画面和行继考虑行，属于当前画面，分别的底部半帧; F）验证是否所述第二对中的第二系数是磨碎器小于或等于的倍的第二前缀实正数（测试版）所述第二对的所述第一系数，递增在每个正验证一个第三计数器（CONT_2）; 克）在递增以便测试各行的第四计数器（NUM_RIGHE）; 验证是否（CONT_1）第一计数器的含量为大于或等于的倍的第三前缀正实数（伽马）第二计数器（NUM_MACROBLOCK）和无论的内容，同时，所述第三计数器的内容 （CONT 2）大于或等于次四分之一前缀正实数（增量）的第四计数器的内容（NUM_RIGHE）：如果是这样，considerating所述顶部和底部半帧构成的帧隔行之一， 如果没有一个渐进。

公开(公告)号：EP1381242A3

公开(公告)日：2008-01-16

申请号：EP03014057.8

申请日：2003-06-23

Applicant: STMicroelectronics S.r.l.

Inventor： Pau, Danilo ,  Alfonso, Daniele ,  Piccinelli, Emiliano ,  Signorelli, Tiziana

IPC: H04N9/64 ,  G09G5/36

CPC classification number: G09G3/3611 ,  G09G3/3688 ,  G09G5/363 ,  G09G2340/02 ,  G09G2340/06 ,  H04N9/64

Abstract: An RGB digital video signal destined to be displayed on a display such as a liquid crystal display (LCD) is converted from the RGB colour space to the YUV colour space. The signal converted into the YUV colour space is subjected to at least a processing operation selected among a sub-sampling operation (24) and a data compression operation (26). The signal is then stored in a memory and the signal read from said memory (12) is then subjected to at least a return operation (28, 30) complementary to the aforesaid processing operation (24, 26). The signal subjected to the aforesaid return operation is lastly reconverted from the YUV colour space to the RGB colour space, thus being susceptible to be displayed on the display.