公开(公告)号：EP0874523B1

公开(公告)日：2004-03-03

申请号：EP97830188.5

申请日：1997-04-24

Applicant: STMicroelectronics S.r.l.

Inventor： Mancuso, Massimo ,  Poluzzi, Rinaldo ,  D'Alto, Viviana ,  Molinari, Luca

IPC: H04N7/01 ,  H04N5/44

CPC classification number: H04N7/0132 ,  H04N5/145 ,  H04N7/014

公开(公告)号：EP1377040A1

公开(公告)日：2004-01-02

申请号：EP02425403.9

申请日：2002-06-19

Applicant: STMicroelectronics S.r.l.

Inventor： Vella, Filippo ,  Mancuso, Massimo

IPC: H04N5/232 ,  H04N7/26

CPC classification number: H04N5/23264 ,  H04N5/145 ,  H04N5/23248 ,  H04N5/23254 ,  H04N19/17 ,  H04N19/527 ,  H04N19/55

Abstract: A method of stabilizing an image sequence, said method comprising the following phases:

estimating (Mot_Est) a first global motion vector ( absGMV [n,ref]) comprising a first motion component ( absGMV y [n,ref] ) in a predetermined direction that has associated with it a first respective amplitude and a first respective direction, said first vector being representative of the motion with respect to a reference image ( Img ref ) of a first image ( Img n ) consisting of a pixel matrix,
associating said first component with either a wanted motion or an unwanted motion,
compensating said first component when it is associated with an unwanted motion,
   characterized in that the association phase comprises a phase of comparing the first amplitude of said component with a threshold compensation value ( T hor c om p ) assigned to the predetermined direction, said first component being associated with an unwanted or wanted motion whenever the first amplitude is, respectively, smaller than said threshold value ( T hor c om p ) or greater than/equal to it.

Abstract translation: 一种稳定图像序列的方法，所述方法包括以下阶段：估计（Mot_Est）包括与其相关联的预定方向上的第一运动分量（absGMVyÄn，refu）的第一全局运动矢量（absGMVÄn，refÜ） 第一相应振幅和第一相应方向，所述第一矢量表示相对于由像素矩阵组成的第一图像（Imgn）的参考图像（Imgn）的运动，所述第一图像（Imgn）将所述第一分量与想要的运动或 当所述第一分量与不想要的运动相关联时补偿所述第一分量，其特征在于，所述关联阶段包括将所述分量的第一幅度与分配给所述预定方向的阈值补偿值（Thor_comp）进行比较的相位，所述第一分量 每当第一幅度分别小于所述阈值时与无用或想要的运动相关联 e（Thor_comp）或大于/等于它。

公开(公告)号：EP1376471A1

公开(公告)日：2004-01-02

申请号：EP02425402.1

申请日：2002-06-19

Applicant: STMicroelectronics S.r.l.

Inventor： Vella, Filippo ,  Mancuso, Massimo

IPC: G06T7/20

CPC classification number: G06T7/215

Abstract: A method (Mot_Est) of estimating a global motion vector representative of the motion of a first digital image ( Img n ) with respect to a second digital image ( Img n-1 ), the first and the second image forming part of a sequence of images and being made up of, respectively, a first and a second pixel matrix. The method estimates the global motion vector on the basis of the estimate of at least one motion vector ( F_GMV, B_GMV ) of at least one region (F_Ground, B_Ground) of the first image ( Img n ) representative of the motion of the at least one region from the first image to the second image and comprising phases of:

subdividing the at least one region of the first image into a plurality of pixel blocks,
assigning (Block_Weight) to each block of the plurality a respective weighting coefficient calculated on the basis of a respective inhomogeneity measure,
estimating (GMV_Select) the at least one motion vector ( F_GMV, B_GMV ) of said at least one region (F_Ground, B_Ground) on the basis of the weighting coefficients assigned to each block of the at least one region.

Abstract translation: 一种估计代表第一数字图像（Imgn）相对于第二数字图像（Imgn-1）的运动的全局运动矢量的方法（Mot_Est），图像序列的第一和第二图像形成部分;以及 分别由第一和第二像素矩阵构成。 该方法基于代表至少一个运动的第一图像（Imgn）的至少一个区域（F_Ground，B_Ground）的至少一个运动矢量（F_GMV，B_GMV）的估计来估计全局运动矢量 区域，其包括以下步骤：将所述第一图像的所述至少一个区域细分为多个像素块，向所述多个的每个块分配（Block_Weight）各自的加权系数，所述各个加权系数基于 相应的不均匀性度量，基于分配给至少一个区域的每个块的加权系数来估计（GMV_Select）所述至少一个区域（F_Ground，B_Ground）的至少一个运动矢量（F_GMV，B_GMV）。

公开(公告)号：EP1357514A1

公开(公告)日：2003-10-29

申请号：EP02425262.9

申请日：2002-04-23

Applicant: STMicroelectronics S.r.l.

Inventor： Messina, Giuseppe ,  Battiato, Sebastiano ,  Mancuso, Massimo

IPC: G06T3/40

CPC classification number: G06T3/4076

Abstract: A method of obtaining a high-resolution digital image from a plurality of starting images formed by pixel matrices and acquired at a lower resolution. The method comprises a phase of combining the plurality of starting images to generate a provisional high-resolution image. The method thereafter comprises a phase of producing a further plurality of low-resolution images from the provisional image, each of the images of said further plurality corresponding to a respective image of the plurality of starting images.
The method also comprises a phase in which the provisional image is at least partly processed by modifying pixels of this image to reduce a difference between corresponding images of the plurality of starting images and said further plurality and is characterized by the fact the phase of processing the provisional image comprises phases of:

associating pixels of the provisional image with a respective measure representing the uncertainty of the pixels,
leaving unmodified at least a subset of pixels of the provisional image with which there is associated a respective uncertainty measure smaller than a predetermined threshold value.

Abstract translation: 一种从由像素矩阵形成并以较低分辨率获取的多个起始图像中获得高分辨率数字图像的方法。 该方法包括组合多个起始图像以产生临时高分辨率图像的相位。 此后的方法包括从临时图像产生另外多个低分辨率图像的相位，所述另外多个的每个图像对应于多个起始图像的相应图像。 该方法还包括其中通过修改该图像的像素来至少部分地处理临时图像的相位，以减少多个起始图像和所述多个起始图像的对应图像之间的差异，并且其特征在于， 处理临时图像的阶段包括以下阶段：将临时图像的像素与表示像素的不确定性的相应测量相关联，留下未修改的临时图像的至少一个子集，其中相关联的不确定性度量小于 预定阈值。

公开(公告)号：EP1317145A1

公开(公告)日：2003-06-04

申请号：EP01830738.9

申请日：2001-11-30

Applicant: STMicroelectronics S.r.l.

Inventor： Battiato, Sebastiano ,  Mancuso, Massimo

IPC: H04N7/30

CPC classification number: H04N19/186 ,  H04N19/126 ,  H04N19/60

Abstract: A method of compressing digital images, represented by pixel matrices, that employs the transform into the two-dimensional spatial frequency domain and a quantization process realized with matrices optimised in accordance with psycho-visual and statistical criteria, where the statistical criteria relate to specific image classes.

Abstract translation: 一种压缩由像素矩阵表示的数字图像的方法，其将变换应用于二维空间频域，以及使用根据心理视觉和统计标准优化的矩阵实现的量化过程，其中统计标准涉及特定图像 类。

公开(公告)号：EP0881837B1

公开(公告)日：2003-03-26

申请号：EP97830264.4

申请日：1997-05-30

Applicant: STMicroelectronics S.r.l.

Inventor： Mancuso, Massimo ,  Poluzzi, Rinaldo

IPC: H04N7/30

CPC classification number: H04N19/527 ,  H04N19/86

公开(公告)号：EP1289308A1

公开(公告)日：2003-03-05

申请号：EP01830552.4

申请日：2001-08-29

Applicant: STMicroelectronics S.r.l.

Inventor： Guarnera, Mirko ,  Mancuso, Massimo ,  Puliafito, Antonio ,  Arena, Antonino ,  Villari, Massimo

IPC: H04N9/04

CPC classification number: H04N9/045

Abstract: Presented is a digital camera, comprising:

a sensor (205) for sensing an image and producing a first signal;
a Bayer pattern producer (210) coupled to said sensor (205) and structured to produce a Bayer pattern from said first signal;
a splitter (212) structured to split said Bayer pattern into separate color channels;
a compressor (220) for compressing said color channels into a compressed image;
an output interface (226) structured to transmit said compressed image on a communication channel; and
a color interpreter structured to perform a modification on exactly one of said color channels from said splitter (212) prior to sending said color channels to said compressor (220).

Additionally described is a network that operates with said digital camera to perform certain functions, as directed by a user of said digital camera.

Abstract translation: 提供了一种数码相机，包括：用于感测图像并产生第一信号的传感器（205）; 耦合到所述传感器（205）并被构造为从所述第一信号产生拜耳图案的拜耳图案生成器（210） 分离器（212），其被构造成将所述拜耳图案分割成单独的颜色通道; 压缩机（220），用于将所述彩色通道压缩成压缩图像; 输出接口（226），其被构造为在通信信道上发送所述压缩图像; 以及颜色解释器，被构造为在将所述颜色通道发送到所述压缩器（220）之前，对来自所述分离器（212）的所述颜色通道的正好一个进行修改。 另外描述的是与所述数码相机一起操作以按照所述数字照相机的用户的指示执行某些功能的网络。

公开(公告)号：EP0794512B1

公开(公告)日：2002-08-28

申请号：EP96830099.6

申请日：1996-03-07

Applicant: STMicroelectronics S.r.l.

Inventor： Mancuso, Massimo ,  Poluzzi, Rinaldo

IPC: G06T5/20 ,  H04N5/21

CPC classification number: H04N5/213 ,  G06T5/20 ,  H04N5/14

公开(公告)号：EP1173026A1

公开(公告)日：2002-01-16

申请号：EP00202438.8

申请日：2000-07-10

Applicant: STMicroelectronics S.r.l.

Inventor： Bruna, Arcangelo ,  Mancuso, Massimo ,  Galluzzo, Agostino

IPC: H04N7/30 ,  H04N5/232 ,  G02B7/36

CPC classification number: H04N5/2351 ,  H04N5/23212 ,  H04N19/122 ,  H04N19/126 ,  H04N19/14 ,  H04N19/149 ,  H04N19/18 ,  H04N19/186 ,  H04N19/42 ,  H04N19/60

Abstract: A method (400) of compressing a digital image including a matrix of elements each one consisting of a plurality of digital components of different type representing a pixel, the method comprising the steps of providing (410-430) an incomplete digital image wherein at least one component is missing in each element, obtaining (433-435) the digital image from the incomplete digital image, splitting (455) the digital image into blocks and calculating, for each block, a group of DCT coefficients for the components of each type, and quantizing (460-465) the DCT coefficients of each group using a corresponding quantization table scaled by a gain factor; the method further comprises the steps of determining (440) at least one energy measure of the incomplete digital image and estimating (445-450) the gain factor as a function of the at least one energy measure, the function being determined experimentally according to a target compression factor.

Abstract translation: 一种压缩数字图像的方法（400），包括由表示像素的不同类型的多个数字分量组成的元素矩阵，所述方法包括以下步骤：提供（410-430）不完整的数字图像，其中至少 在每个元素中缺少一个分量，从不完整的数字图像中获取（433-435）数字图像，将数字图像分解（455）为块，并为每个块计算每种类型的分量的一组DCT系数 并且使用由增益因子缩放的对应量化表量化（460-465）每个组的DCT系数; 该方法还包括以下步骤：确定（440）不完全数字图像的至少一个能量测量，并且根据所述至少一个能量测量值估计（445-450）所述增益因子，所述功能根据实验确定 目标压缩因子。

公开(公告)号：EP1173024A1

公开(公告)日：2002-01-16

申请号：EP00202436.2

申请日：2000-07-10

Applicant: STMicroelectronics S.r.l.

Inventor： Bruna, Arcangelo ,  Mancuso, Massimo ,  Galluzzo, Agostino

IPC: H04N7/30 ,  G06T9/00

CPC classification number: H04N19/18 ,  H04N19/126 ,  H04N19/14 ,  H04N19/149 ,  H04N19/186 ,  H04N19/196 ,  H04N19/60

Abstract: A method (400) of compressing a digital image including a matrix of elements each one consisting of a plurality of digital components of different type representing a pixel, the method comprising the steps of splitting (455) the digital image into a plurality of blocks and calculating, for each block, a group of DCT coefficients for the components of each type, and quantizing (460-465) the DCT coefficients of each block using a corresponding quantization table scaled by a gain factor for achieving a target compression factor; the method further comprises the steps of determining (440) at least one energy measure of the digital image, and estimating (441-450) the gain factor as a function of the at least one energy measure, the function being determined experimentally according to the target compression factor.

Abstract translation: 一种压缩数字图像的方法（400），包括由表示像素的不同类型的多个数字分量组成的元素矩阵，所述方法包括以下步骤：将数字图像分割成多个块， 针对每个块计算每种类型的分量的一组DCT系数，并且使用由用于实现目标压缩因子的增益因子缩放的对应量化表量化（460-465）每个块的DCT系数; 该方法还包括以下步骤：确定（440）数字图像的至少一个能量测量，以及根据所述至少一个能量测量来估计增益因子（441-450），所述功能根据实验确定 目标压缩因子。