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：US20160189673A1

公开(公告)日：2016-06-30

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 ,  G09G3/00 ,  H04N1/60

CPC classification number: G09G5/02 ,  G06T7/90 ,  G09G3/002 ,  G09G2320/0242 ,  G09G2340/06 ,  H04N1/6088 ,  H04N1/6097 ,  H04N9/3182 ,  H04N9/3194 ,  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.

Abstract translation: 要在彩色显示表面上显示并在色彩空间中具有第一色域的彩色信号经受辐射补偿。 一个实施例包括在彩色表面上显示一组已知颜色的控制点，经由相机获取显示在彩色表面上的控制点并评估显示在彩色表面上的控制点的至少一个第二色域。 由于显示表面是有色表面，所以第二色域相对于第一色域不对准。 该方法还可以包括评估作为交叉色域，第二色域相对于第一色域的未对准，计算作为评估的未对准的函数的颜色变换算子，并应用颜色变换 操作者将颜色信号显示在彩色显示表面上。

公开(公告)号：US20150205792A1

公开(公告)日：2015-07-23

申请号：US14602113

申请日：2015-01-21

Applicant: STMicroelectronics S.r.l.

Inventor： Danilo Pietro Pau ,  Davide Mazzini ,  Raimondo Schettini ,  Simone Bianco

IPC: G06F17/30 ,  G06T7/40

CPC classification number: G06F17/3025 ,  G06K9/4671 ,  G06T7/90 ,  G06T2207/10024

Abstract: Searches performed in a data base using image descriptors of query images are managed via a mobile communication device, such as a smartphone, a tablet, etc., by: extracting at the mobile device grayscale and color descriptors of query images, sending the grayscale descriptors as compressed grayscale descriptors of query images from the mobile device to a server for searching in the data base, receiving at the mobile device results of the search, using color descriptors of query images in disambiguating the results by: i) sending the color descriptors as compressed color descriptors of query images from the mobile device to the server and receiving at the mobile device disambiguated search results from the server, or ii) receiving at the mobile device non-disambiguated search results from the server and disambiguating the search results by means of the color descriptors extracted at the mobile device to produce disambiguated search results.

Abstract translation: 使用查询图像的图像描述符在数据库中执行的搜索通过诸如智能电话，平板电脑等的移动通信设备来管理，通过以下步骤：在移动设备处提取灰度级和查询图像的颜色描述符，发送灰度描述符 作为从移动设备到用于在数据库中搜索的服务器的查询图像的压缩灰度描述符，在移动设备处接收搜索结果，使用查询图像的颜色描述符来消除结果，其中：i）将颜色描述符发送为 从移动设备到服务器的查询图像的压缩颜色描述符，以及在移动设备处接收来自服务器的歧义搜索结果，或者ii）在移动设备处从服务器接收非消歧歧义的搜索结果，并通过以下方式消除搜索结果的歧义： 在移动设备处提取颜色描述符以产生消歧的搜索结果。

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：US20180336865A1

公开(公告)日：2018-11-22

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 ,  H04N9/67 ,  H04N9/31 ,  G06T7/90 ,  H04N1/60 ,  G09G3/00

CPC classification number: G09G5/02 ,  G06T7/90 ,  G09G3/002 ,  G09G2320/0242 ,  G09G2340/06 ,  H04N1/6088 ,  H04N1/6097 ,  H04N9/3182 ,  H04N9/3194 ,  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：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：US09910864B2

公开(公告)日：2018-03-06

申请号：US14602113

申请日：2015-01-21

Applicant: STMicroelectronics S.r.l.

Inventor： Danilo Pietro Pau ,  Davide Mazzini ,  Raimondo Schettini ,  Simone Bianco

IPC: G06F17/30 ,  G06K9/46 ,  G06T7/90

CPC classification number: G06F17/3025 ,  G06K9/4671 ,  G06T7/90 ,  G06T2207/10024

Abstract: Searches performed in a data base using image descriptors of query images are managed via a mobile communication device, such as a smartphone, a tablet, etc., by: extracting at the mobile device grayscale and color descriptors of query images, sending the grayscale descriptors as compressed grayscale descriptors of query images from the mobile device to a server for searching in the data base, receiving at the mobile device results of the search, using color descriptors of query images in disambiguating the results by: i) sending the color descriptors as compressed color descriptors of query images from the mobile device to the server and receiving at the mobile device disambiguated search results from the server, or ii) receiving at the mobile device non-disambiguated search results from the server and disambiguating the search results by means of the color descriptors extracted at the mobile device to produce disambiguated search results.