公开(公告)号：EP1498847A3

公开(公告)日：2006-02-15

申请号：EP04076850.9

申请日：2004-06-25

Applicant: STMicroelectronics S.r.l.

Inventor： Curti, Salvatore ,  Battiato, Sebastiano ,  Scordato, Emiliano ,  Tortora, Marcello ,  Ardizzone, Edoardo ,  La Cascia, Marco

IPC: G06T7/00

CPC classification number: G06T7/536

Abstract: There is described a method of obtaining a depth map from a single digital image of a three-dimensional scene containing geometric objects. It envisages the identification in the image of at least one horizontal plane or one vertical plane of the three-dimensional scene and the assignment to every point of the image forming part of the identified plane, or to each one of the identified planes, of a depth level according to its distance from, respectively, a predetermined horizontal or vertical reference straight of the image. In particular, the identification of at least one plane comprises the identification in the image of at least two vanishing lines corresponding to two parallel lines in the plane and the assignment of a depth level is made in accordance with the angular coefficients of the identified vanishing lines.
Also described is a completely automatic method for obtaining a depth map from a single digital image of any three-dimensional scene.

公开(公告)号：EP1313066A8

公开(公告)日：2003-09-10

申请号：EP01830713.2

申请日：2001-11-19

Applicant: STMicroelectronics S.r.l.

Inventor： Castorina, Alfio ,  Mancuso, Massimo ,  Battiato, Sebastiano

IPC: G06T5/50

CPC classification number: G06T5/50 ,  G06T2207/20208

Abstract: A method of processing digital source images, each represented by pixel matrices, to obtain from two or more source images, representing one and the same real scene and acquired by utilizing different exposure levels, a final digital image capable of reproducing the real scene with an exposure latitude greater than that of each of the source images. The method, which can be advantageously used in digital still cameras, produces the final image by combining the source images with the help of a weighted mean constructed pixel by pixel. Thanks to a special filtering to which the weighting coefficients are subjected before the weighted mean operation, the method obtains a final image in which the source images are harmoniously combined with each other. A variant of the method can also be applied directly to digital images in CFA (Colour Filter Array) format.

公开(公告)号：EP1313066B1

公开(公告)日：2008-08-27

申请号：EP01830713.2

申请日：2001-11-19

Applicant: STMicroelectronics S.r.l.

Inventor： Castorina, Alfio ,  Mancuso, Massimo ,  Battiato, Sebastiano

IPC: G06T5/50

CPC classification number: G06T5/50 ,  G06T2207/20208

公开(公告)号：EP1394742B1

公开(公告)日：2007-12-12

申请号：EP02425532.5

申请日：2002-08-23

Applicant: STMicroelectronics S.r.l.

Inventor： Bosco, Angelo ,  Battiato, Sebastiano

IPC: G06T5/20

CPC classification number: G06T5/20

公开(公告)号：EP1498847A2

公开(公告)日：2005-01-19

申请号：EP04076850.9

申请日：2004-06-25

Applicant: STMicroelectronics S.r.l.

Inventor： Curti, Salvatore ,  Battiato, Sebastiano ,  Scordato, Emiliano ,  Tortora, Marcello ,  Ardizzone, Edoardo ,  La Cascia, Marco

IPC: G06T7/00

CPC classification number: G06T7/536

Abstract: There is described a method of obtaining a depth map from a single digital image of a three-dimensional scene containing geometric objects. It envisages the identification in the image of at least one horizontal plane or one vertical plane of the three-dimensional scene and the assignment to every point of the image forming part of the identified plane, or to each one of the identified planes, of a depth level according to its distance from, respectively, a predetermined horizontal or vertical reference straight of the image. In particular, the identification of at least one plane comprises the identification in the image of at least two vanishing lines corresponding to two parallel lines in the plane and the assignment of a depth level is made in accordance with the angular coefficients of the identified vanishing lines.
Also described is a completely automatic method for obtaining a depth map from a single digital image of any three-dimensional scene.

Abstract translation: 描述了从包含几何对象的三维场景的单个数字图像中获得深度图的方法。 它设想在三维场景的至少一个水平面或一个垂直平面的图像中进行识别，以及对形成所识别平面的一部分或者被识别平面中的每一个的图像的每个点的分配 根据其与图像的预定水平或垂直参考直线的距离的深度级别。 特别地，至少一个平面的识别包括在平面中对应于两个平行线的至少两个消失线的图像中的识别，并且根据所识别的消失线的角度系数进行深度级的分配 。 还描述了从任何三维场景的单个数字图像获得深度图的完全自动的方法。

公开(公告)号：EP1372335B1

公开(公告)日：2005-03-09

申请号：EP02425382.5

申请日：2002-06-12

Applicant: STMicroelectronics S.r.l.

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

IPC: H04N1/40 ,  H04N7/01

CPC classification number: G06T3/4053 ,  G06T3/4015 ,  H04N5/349

公开(公告)号：EP1394742A1

公开(公告)日：2004-03-03

申请号：EP02425532.5

申请日：2002-08-23

Applicant: STMicroelectronics S.r.l.

Inventor： Bosco, Angelo ,  Battiato, Sebastiano

IPC: G06T5/20

CPC classification number: G06T5/20

Abstract: A method for filtering the noise of a sequence of digital images (Img 1 ,..., Img n , Img n+1 ,...) in CFA format comprising the following phases:

processing a first CFA image (Img n-1 ) of the sequence to obtain a corresponding improved CFA image (f_Img n-1 ) with reduced noise;
processing at least one pixel (p n (x,y)) of a second CFA image (Img n ) of the sequence that temporally follows said first image (Img n-1 ), said phase of processing at least one pixel providing a corresponding filtered pixel (f_p n (x,y)) and including the following operations:

selecting (SW_ sel) a first set of pixels (SW n (x,y)) comprising said at least one pixel and a plurality of pixels of the second CFA image spatially adjacent to it;
selecting (TW_sel) a second set of pixels (TW n (x,y)) comprising pixels of the improved CFA image homologous with the pixels of said first set;
carrying out a digital filtering of a first type (ST_fliter) using pixels forming part of said first and second set to generate the filtered pixel (f_p n (x,y)).

Abstract translation: 一种用于过滤CFA格式的数字图像序列（Img1，...，Imgn，Imgn + 1，...）的噪声的方法，包括以下阶段：处理序列的第一CFA图像（Imgn-1） 以获得具有降低的噪声的相应改进的CFA图像（f_Imgn-1）; 处理在时间上在所述第一图像（Imgn-1）之后的序列的第二CFA图像（Imgn）的至少一个像素（pn（x，y）），所述处理的至少一个像素的相位提供相应的滤波像素 f_pn（x，y））并且包括以下操作：选择（SW_ sel）包括所述至少一个像素的第一组像素（SWn（x，y））和与空间相邻的第二CFA图像的多个像素 它; 选择（TW_sel）包括与所述第一组的像素同源的改进的CFA图像的像素的第二组像素（TWn（x，y））; 使用形成所述第一和第二组的一部分的像素进行第一类型（ST_fliter）的数字滤波以产生滤波像素（f_pn（x，y））。

公开(公告)号：EP1372335A1

公开(公告)日：2003-12-17

申请号：EP02425382.5

申请日：2002-06-12

Applicant: STMicroelectronics S.r.l.

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

IPC: H04N1/40 ,  H04N7/01

CPC classification number: G06T3/4053 ,  G06T3/4015 ,  H04N5/349

Abstract: A method for obtaining a high-resolution digital image from a plurality of starting images P,S formed by pixel matrices and acquired at a lower resolution. The method comprises a phase of combining the plurality of starting images P,S to generate a provisional high-resolution image HR (0) formed by a pixel matrix.
The method also comprises a calculation phase to associate a respective error with at least a part of the pixels of the provisional image HR (0) , said calculation phase providing a first error associated with at least one first pixel, and a phase of at least partially processing the provisional image by modifying the pixels of this image on the basis of the respective errors associated with them.
The method is characterized by the fact that the calculation phase includes the phase of:

calculating a second error to associate with at least one second pixel situated in the vicinity of said first pixel in the matrix ( HR (0) ), said second error being calculated by using the first error associated with said at least one first pixel.

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P，S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P，S以产生由像素矩阵形成的临时高分辨率图像HR <（0）>的相位。 该方法还包括用于将相应误差与临时图像HR <（0）>的像素的至少一部分相关联的计算阶段，所述计算阶段提供与至少一个第一像素相关联的第一误差， 以及通过基于与它们相关联的各个错误修改该图像的像素来至少部分地处理临时图像的相位。 该方法的特征在于计算阶段包括以下相位：计算第二误差以与位于矩阵中的所述第一像素附近的至少一个第二像素相关联（HR <（0）> ），通过使用与所述至少一个第一像素相关联的第一误差来计算所述第二误差。

公开(公告)号：EP1326209A1

公开(公告)日：2003-07-09

申请号：EP01830803.1

申请日：2001-12-24

Applicant: STMicroelectronics S.r.l.

Inventor： Castorina, Alfio ,  Mancuso, Massimo ,  Battiato, Sebastiano

IPC: G06T5/40

CPC classification number: G06T5/008 ,  G06T5/40 ,  G06T2207/10024

Abstract: A method for improving the quality of a digital image acquired with a non-optimal exposure. The method, which is applied directly to the image in CFA (Colour Filter Array) format, identifies the regions of the image that are most important from the perceptive or contentual point of view by means of simple statistical measures. The image is then transformed by inverting the response function in such a manner as to optimize the quality of these regions.

Abstract translation: 一种用于改善以非最佳曝光获取的数字图像的质量的方法。 该方法直接应用于CFA（彩色滤镜阵列）格式的图像，通过简单的统计测量方法，从感知或内容的角度来识别图像中最重要的区域。 然后通过以使优化这些区域的质量的方式反转响应函数来变换图像。

公开(公告)号：EP1482724B1

公开(公告)日：2007-07-11

申请号：EP03291155.4

申请日：2003-05-19

Applicant: STMicroelectronics S.A. ,  STMicroelectronics S.r.l.

Inventor： Messina, Giuseppe ,  Battiato, Sebastiano ,  Castorina, Alfio ,  Plaza, Laurent

IPC: H04N1/60

CPC classification number: G06T5/007 ,  G06K9/00234 ,  G06T5/40 ,  H04N1/6027