公开(公告)号：US10152944B2

公开(公告)日：2018-12-11

申请号：US14870131

申请日：2015-09-30

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Filippo Naccari ,  Mirko Guarnera ,  Simone Bianco ,  Raimondo Schettini

IPC: G09G5/02 ,  H04N9/31 ,  G06T7/90 ,  H04N1/60 ,  G09G3/00 ,  H04N9/67

Abstract: Color signals to be displayed on a colored display surface and having a first gamut in a color space, are subjected to radiometric compensation. An embodiment includes displaying on the colored surface a set of control points of a known color, acquiring via a camera the control points as displayed on the colored surface and evaluating at least one second color gamut of the control points displayed on the colored surface. The second color gamut(s) is/are misaligned with respect to the first color gamut due to the display surface being a colored surface. The method may also include evaluating as an intersection gamut, the misalignment of the second color gamut(s) with respect to the first color gamut, calculating the color transformation operator(s) as a function of the misalignment evaluated, and applying the color transformation operator(s) to the color signals for display on the colored display surface.

公开(公告)号：US20210065688A1

公开(公告)日：2021-03-04

申请号：US17000892

申请日：2020-08-24

Applicant: STMicroelectronics S.r.l.

Inventor： Nunziata Ivana Guarneri ,  Filippo Naccari

IPC: G10L15/08 ,  G10L15/22 ,  G10L15/04 ,  G10L15/16

Abstract: A method of processing an electrical signal transduced from a voice signal is disclosed. A classification model is applied to the electrical signal to produce a classification indicator. The classification model has been trained using an augmented training dataset. The electrical signal is classified as either one of a first class and a second class in a binary classification. The classifying being performed is a function of the classification indicator. A trigger signal is provided to a user circuit as a result of the electrical signal being classified in the first class of the binary classification.

公开(公告)号：US09451222B2

公开(公告)日：2016-09-20

申请号：US14066395

申请日：2013-10-29

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Filippo Naccari ,  Arcangelo Ranieri Bruna ,  Simone Bianco ,  Raimondo Schettini

IPC: H04N5/208 ,  H04N9/07 ,  H04N1/60 ,  H04N9/67 ,  H04N5/14

CPC classification number: H04N9/07 ,  H04N1/6072 ,  H04N5/142 ,  H04N9/67

Abstract: An embodiment relates to a method for color processing of an input image, the method including the steps of low-pass filtering of the input image to obtain a low-pass component, high-pass filtering of the input image to obtain a high-pass component, processing the input image for edge detection to obtain edginess parameters, and performing a color-space transformation of the input image based on the low-pass component, the high-pass component, and the edginess parameters.

Abstract translation: 一个实施例涉及输入图像的颜色处理方法，该方法包括以下步骤：输入图像的低通滤波以获得低通分量，输入图像的高通滤波以获得高通 处理用于边缘检测的输入图像以获得edginess参数，以及基于低通分量，高通分量和edginess参数来执行输入图像的色空间变换。

公开(公告)号：US09554102B2

公开(公告)日：2017-01-24

申请号：US14133381

申请日：2013-12-18

Applicant: STMicroelectronics S.R.L.

Inventor： Filippo Naccari ,  Angelo Bosco ,  Mirko Guarnera

IPC: G06T3/00 ,  G06T5/00 ,  G09G5/02 ,  G09G1/28 ,  G09G5/06 ,  H04N1/60 ,  H04N5/58 ,  H04N9/73 ,  H04N3/14 ,  H04N9/31 ,  H04N9/67

CPC classification number: H04N9/3173 ,  H04N9/3182 ,  H04N9/3194 ,  H04N9/67

Abstract: An embodiment relates to a method for converting a digital image from a first color space to a second color space. The first color space is associated with an electronic source device, and the second color space is associated with a projection apparatus of digital images on a screen and coupled to the source device. The method includes: performing a first conversion on a first triad of parameters associated to the first color space by a first conversion matrix to map such a first triad in a third triad of parameters; the third triad is representative of a color space independent from the first and the second color spaces; performing a second conversion on the third triad of parameters by a second conversion matrix to map such a third triad of parameters in a second triad of parameters representative of the second color space. An embodiment of the step of performing the second conversion includes a step of computing the coefficients of the second conversion matrix based on at least one first piece of information representative of a variable distance between the projection apparatus and the screen.

Abstract translation: 实施例涉及将数字图像从第一颜色空间转换为第二颜色空间的方法。 第一颜色空间与电子源设备相关联，并且第二颜色空间与屏幕上的数字图像的投影设备相关联并耦合到源设备。 该方法包括：通过第一转换矩阵对与第一颜色空间相关联的参数的第一三元组执行第一转换，以将第三三元组的参数映射到第一三元组; 第三个三元组代表与第一和第二颜色空间无关的颜色空间; 通过第二转换矩阵在第三三元组参数上执行第二转换，以在表示第二颜色空间的参数的第二三元组中映射这样的第三三元组参数。 执行第二转换的步骤的实施例包括基于表示投影设备和屏幕之间的可变距离的至少一个第一信息来计算第二转换矩阵的系数的步骤。

公开(公告)号：US20130136352A1

公开(公告)日：2013-05-30

申请号：US13740900

申请日：2013-01-14

Applicant: STMicroelectronics S.r.l.

Inventor： Filippo Naccari ,  Arcangelo Ranieri Bruna ,  Alfio Castorina

IPC: G06K9/62

CPC classification number: G06K9/6267 ,  G06K9/38 ,  G06K9/4652 ,  H04N1/62 ,  H04N1/628

Abstract: A method of processing digital images by transforming a set of pixels from a three-dimensional space to a normalized two-dimensional space, determining a membership class and membership class level of each pixel in the set of pixels, and selectively modifying colors of pixels in the set of pixels based on the determined membership classes and membership class levels.

Abstract translation: 一种通过将一组像素从三维空间变换为归一化的二维空间来处理数字图像的方法，确定该组像素中的每个像素的隶属类和隶属类级别，以及选择性地修改像素集合中的像素的颜色 基于所确定的成员资格类和成员级别级别的像素集合。

公开(公告)号：US11037522B2

公开(公告)日：2021-06-15

申请号：US16047768

申请日：2018-07-27

Applicant: STMicroelectronics S.r.l.

Inventor： Filippo Naccari ,  Mirko Guarnera ,  Simone Bianco ,  Raimondo Schettini

IPC: G09G5/02 ,  G06T7/90 ,  H04N9/31 ,  H04N1/60 ,  G09G3/00 ,  H04N9/67

Abstract: Color signals to be displayed on a colored display surface and having a first gamut in a color space, are subjected to radiometric compensation. An embodiment includes displaying on the colored surface a set of control points of a known color, acquiring via a camera the control points as displayed on the colored surface and evaluating at least one second color gamut of the control points displayed on the colored surface. The second color gamut(s) is/are misaligned with respect to the first color gamut due to the display surface being a colored surface. The method may also include evaluating as an intersection gamut, the misalignment of the second color gamut(s) with respect to the first color gamut, calculating the color transformation operator(s) as a function of the misalignment evaluated, and applying the color transformation operator(s) to the color signals for display on the colored display surface.

公开(公告)号：US08811733B2

公开(公告)日：2014-08-19

申请号：US13740900

申请日：2013-01-14

Applicant: STMicroelectronics S.r.l.

Inventor： Filippo Naccari ,  Arcangelo Ranieri Bruna ,  Alfio Castorina

IPC: G06K9/00

CPC classification number: G06K9/6267 ,  G06K9/38 ,  G06K9/4652 ,  H04N1/62 ,  H04N1/628

Abstract: A method of processing digital images by transforming a set of pixels from a three-dimensional space to a normalized two-dimensional space, determining a membership class and membership class level of each pixel in the set of pixels, and selectively modifying colors of pixels in the set of pixels based on the determined membership classes and membership class levels.

Abstract translation: 一种通过将一组像素从三维空间变换为归一化的二维空间来处理数字图像的方法，确定该组像素中的每个像素的隶属类和隶属类级别，以及选择性地修改像素集合中的像素的颜色 基于所确定的成员资格类和成员级别级别的像素集合。

公开(公告)号：US11848006B2

公开(公告)日：2023-12-19

申请号：US17000892

申请日：2020-08-24

Applicant: STMicroelectronics S.r.l.

Inventor： Nunziata Ivana Guarneri ,  Filippo Naccari

IPC: G10L15/08 ,  G10L15/04 ,  G10L15/16 ,  G10L25/24 ,  G10L15/22

CPC classification number: G10L15/083 ,  G10L15/04 ,  G10L15/16 ,  G10L15/22 ,  G10L25/24 ,  G10L2015/088

Abstract: A method of processing an electrical signal transduced from a voice signal is disclosed. A classification model is applied to the electrical signal to produce a classification indicator. The classification model has been trained using an augmented training dataset. The electrical signal is classified as either one of a first class and a second class in a binary classification. The classifying being performed is a function of the classification indicator. A trigger signal is provided to a user circuit as a result of the electrical signal being classified in the first class of the binary classification.

公开(公告)号：US09807358B2

公开(公告)日：2017-10-31

申请号：US14608637

申请日：2015-01-29

Applicant: STMicroelectronics S.r.l.

Inventor： Angelo Bosco ,  Filippo Naccari ,  Mirko Guarnera

IPC: G06F15/00 ,  G03F3/08 ,  G06K9/00 ,  H04N9/31 ,  H04N9/67 ,  G09G5/02

CPC classification number: H04N9/3182 ,  G09G5/026 ,  G09G2320/0242 ,  G09G2340/06 ,  H04N9/3173 ,  H04N9/67

Abstract: Color images designed to be displayed, for example, with a projector such as a laser pico projector, are subjected to gamut extension in respective iso-hue paths in the CIE1931xyY color space, operating for example, as follows: a plurality of iso-hue curves in the CIE1931xyY color space is determined; for the points subjected to gamut extension, the closest iso-hue curves are identified; and extension paths to be used for the operation of gamut extension are interpolated from said closest iso-hue curves.

公开(公告)号：US20150221281A1

公开(公告)日：2015-08-06

申请号：US14608637

申请日：2015-01-29

Applicant: STMicroelectronics S.r.l.

Inventor： Angelo Bosco ,  Filippo Naccari ,  Mirko Guarnera

IPC: G09G5/02 ,  H04N9/31

CPC classification number: H04N9/3182 ,  G09G5/026 ,  G09G2320/0242 ,  G09G2340/06 ,  H04N9/3173 ,  H04N9/67

Abstract: Color images designed to be displayed, for example, with a projector such as a laser pico projector, are subjected to gamut extension in respective iso-hue paths in the CIE1931xyY color space, operating for example, as follows: a plurality of iso-hue curves in the CIE1931xyY color space is determined; for the points subjected to gamut extension, the closest iso-hue curves are identified; and extension paths to be used for the operation of gamut extension are interpolated from said closest iso-hue curves.

Abstract translation: 设计为例如用诸如激光微型投影仪的投影仪显示的彩色图像在CIE1931xyY色彩空间的各个等色调路径中进行色域扩展，例如如下操作：多个等色调 确定CIE1931xyY颜色空间中的曲线; 对于经过色域扩展的点，识别出最接近的等色调曲线; 并且从所述最近的等色曲线插值用于色域扩展的操作的扩展路径。