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    Digital image processing method for adaptive sharpening
    11.
    发明公开
    Digital image processing method for adaptive sharpening 审中-公开
    Verfahren zur DigitalbildbearbeitungfüradaptersSchärfen

    公开(公告)号：EP1486916A1

    公开(公告)日：2004-12-15

    申请号：EP03425388.0

    申请日：2003-06-13

    Applicant: STMicroelectronics S.r.l.

    Inventor： Battiato, Sebastiano ,  Castorina, Alfio ,  Guarnera, Mirko ,  Vivirito, Paolo

    IPC: G06T5/00 ,  G06T5/20 ,  G06T9/00

    CPC classification number: G06T5/004 ,  G06T5/20 ,  G06T9/00

    Abstract: A method (Q_Impr) for processing a first digital image, comprising an operation (A_Sharp) of increasing the sharpness of said digital image.
    The method is characterized in that the operation of increasing the sharpness (A_Sharp) is of the adaptive type and includes an operation of associating (TD_Ev) with pixel (p i (x,y)) of the starting image respective local homogeneity measures (k(x,y)), and an operation of providing pixel (p 0 (x,y)) of a second digital image by modifying respective pixels (p i (x,y)) of the first digital image on the basis of said respective local homogeneity measures (k(x,y)).

    Abstract translation: 一种用于处理第一数字图像的方法（Q_Impr），包括增加所述数字图像的锐度的操作（A_Sharp）。 该方法的特征在于，增加锐度（A_Sharp）的操作是自适应类型的操作，并且包括将起始图像相应的局部均匀性（TD_Ev）与像素（pi（x，y））相关联的操作 （k（x，y））以及通过基于第一数字图像修改第一数字图像的各个像素（pi（x，y））来提供第二数字图像的像素（p0（x，y））的操作 表示各自的本地均匀性度量（k（x，y））。

    Method for obtaining a high-resolution digital image
    12.
    发明公开
    Method for obtaining a high-resolution digital image 有权
    Vwefahren zur Erfassung eines digitalen Bildsatzes mit hoherAuflösung

    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。

    Optimized quantization method for compressing digital images
    13.
    发明公开
    Optimized quantization method for compressing digital images 审中-公开
    Optimiertes Quantisierungsverfahren zur Komprimierung von digitalen Bildern

    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。

    Method and system for processing signals via perceptive vectorial quantization, computer program product therefor
    18.
    发明公开
    Method and system for processing signals via perceptive vectorial quantization, computer program product therefor 审中-公开
    系统和用于通过矢量量化处理信号的方法，和计算机程序感知

    公开(公告)号：EP1406447A1

    公开(公告)日：2004-04-07

    申请号：EP02425601.8

    申请日：2002-10-04

    Applicant: STMicroelectronics S.r.l.

    Inventor： Vitali, Andrea Lorenzo ,  Della Torre, Luigi ,  Battiato, Sebastiano ,  Buemi, Antonio

    IPC: H04N7/26 ,  H04N7/30 ,  H04N7/34 ,  H04N7/50

    CPC classification number: H04N19/59 ,  H04N19/126 ,  H04N19/14 ,  H04N19/176 ,  H04N19/60 ,  H04N19/94

    Abstract: The system carries out conversion of digital video signals organized in blocks of pixels from a first format (10, 30) to a second format (15, 25). The second format is a format compressed via vector quantization (13, 27). The vector quantization is performed by means of repeated application of a scalar quantizer to the pixels of said blocks with a quantization step (Q) determined in an adaptive way according to the characteristics of sharpness and/or brightness of the pixels.

    Abstract translation: 该过程涉及通过标量量化的与量化步长（Q）确定开采在自适应方式gemäß于像素的锐度和/或亮度的特性块的像素重复应用执行向量量化。 量化步长被确定开采增加gemäß缺乏在块中的像素的均匀性。 因此独立权利要求中包括了以下内容：（a）一种系统，用于将两种格式之间的像素的块构成的数字视频信号（b）的计算机程序产品可直接加载到数字计算机的内存和包括软件代码部分用于实现 在像素块变换的数字视频信号为有组织两种格式之间的处理。

    Method of compressing digital images acquired in colour filter array (CFA) format
    19.
    发明公开
    Method of compressing digital images acquired in colour filter array (CFA) format 有权
    一种用于滤色器阵列格式（CFA）的压缩方法捕获的数字图像

    公开(公告)号：EP1320267A1

    公开(公告)日：2003-06-18

    申请号：EP01830765.2

    申请日：2001-12-14

    Applicant: STMicroelectronics S.r.l.

    Inventor： Battiato, Sebastiano ,  Mancuso, Massimo

    IPC: H04N7/30 ,  H04N7/26

    CPC classification number: H04N19/154 ,  H04N19/124 ,  H04N19/172 ,  H04N19/186 ,  H04N19/60 ,  H04N19/63

    Abstract: A method of compressing digital images acquired in CFA (colour filter array) format (3) that utilizes optimised quantization matrices. The method, basing itself on the statistical characterization of the error introduced during the processing phase (4,5) that precedes compression (6), appropriately modifies the coefficients of any initial quantization matrix, even of a standard type, obtaining a greater compression efficiency without introducing further quality losses.

    Abstract translation: 压缩在CFA获取的数字图像的方法（滤色器阵列）格式（3）那样利用优化的量化矩阵。 该方法中，基础上本身在加工阶段（4,5）做引入的误差的统计特性先于压缩（6）适当地修改任何初始量化矩阵的系数，即使是标准型的，获得一个更大的压缩效率 不引入进一步的质量损失。

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