公开(公告)号：US11184555B2

公开(公告)日：2021-11-23

申请号：US16692638

申请日：2019-11-22

Applicant: STMicroelectronics SA ,  STMicroelectronics (Grenoble 2) SAS

Inventor： Arnaud Bourge ,  Tarek Lule ,  Gregory Roffet

IPC: H04N5/235 ,  H04N5/355 ,  H04N5/353 ,  H01L27/146

Abstract: An image sensor includes a plurality of pixels, where each of the plurality of pixels includes a photodiode. The image sensor is configured to capture images of a scene exposed with a flickering light source by for each of the plurality of pixels, acquiring a value representative of a light level at a corresponding pixel by gradually varying a value of sensitivity of the corresponding pixel.

公开(公告)号：US12096146B2

公开(公告)日：2024-09-17

申请号：US18353665

申请日：2023-07-17

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Gregory Roffet ,  Pascal Mellot

IPC: H04N25/71 ,  H04N25/46 ,  H04N25/583

CPC classification number: H04N25/745 ,  H04N25/46 ,  H04N25/583

Abstract: The image sensor includes an array of photosensitive pixels comprising at least two sets of at least one pixel, control circuit configured to generate at least two different timing signals and adapted to control an acquisition of an incident optical signal by the pixels of the array, and distribution circuit configured to respectively distribute the at least two different timing signals in the at least two sets of at least one sensor, during the same acquisition of the incident optical signal.

公开(公告)号：US09374510B2

公开(公告)日：2016-06-21

申请号：US14203917

申请日：2014-03-11

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Gregory Roffet

IPC: G06K9/00 ,  H04N5/225 ,  G06T5/00 ,  G06T5/40

CPC classification number: H04N5/225 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/20208

Abstract: Generating by a digital processing device, of a first digital image from a second digital image, by: for each pixel of the second image, determining a pixel luminance; dividing the interval ranging from the lowest to the highest luminance into a plurality of sub-intervals; and determining the value of at least one pixel of the first image by multiplying the value of a pixel of the second image by a gain determined by interpolation by taking into account the distance of the pixel luminance of the second image to the limits of the sub-interval containing this luminance.

Abstract translation: 通过以下方式由数字处理装置产生来自第二数字图像的第一数字图像：对于第二图像的每个像素，确定像素亮度; 将从最低亮度到最高亮度的间隔划分成多个子间隔; 以及通过将所述第二图像的像素的值乘以由所述第二图像确定的增益乘以所述第二图像的像素亮度与所述子像素的极限的距离来确定所述第一图像的至少一个像素的值 -interval包含这个亮度。

公开(公告)号：US12033305B2

公开(公告)日：2024-07-09

申请号：US17112341

申请日：2020-12-04

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Cedric Tubert ,  Jeremie Teyssier ,  Gregory Roffet ,  Stephane Drouard

IPC: G06T5/70 ,  G06T5/20 ,  H04N5/21 ,  H04N25/60

CPC classification number: G06T5/70 ,  G06T5/20 ,  H04N5/21 ,  H04N25/60 ,  G06T2207/20012 ,  G06T2207/20192

Abstract: In an embodiment, a method includes: receiving data signals from a plurality of pixels of an array of pixels; generating a plurality of signal-to-noise ratios by determining signal-to-noise ratios for each respective pixel of the plurality of pixels on the basis of the data signals received from the respective pixel; and filtering the data signals received from each pixel of the plurality of pixels by using an adaptive filter configured on the basis of the plurality of the signal-to-noise ratios to generate filtered data signals.

公开(公告)号：US11663697B2

公开(公告)日：2023-05-30

申请号：US17165778

申请日：2021-02-02

Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS

Inventor： Gregory Roffet ,  Stephane Drouard ,  Roger Monteith

IPC: G06T3/40 ,  G06T7/00 ,  G01S17/894

CPC classification number: G06T3/4038 ,  G01S17/894 ,  G06T7/97 ,  G06T2200/32 ,  G06T2207/10016

Abstract: A device for assembling at least two shots of a scene acquired by at least one sensor includes a memory and processing circuitry. The processing circuitry is configured to save, in the memory, a first data set contained in a first signal generated by each pixel of the sensor and indicative of a first shot of the scene, and a second data set contained in a second signal generated by each pixel of the sensor and indicative of a second shot of the scene. The processing circuitry is further configured to assemble the first and second shots on the basis of the content of the first and second data sets of a plurality of pixels in order to form a resulting scene.

公开(公告)号：US11641523B2

公开(公告)日：2023-05-02

申请号：US17452512

申请日：2021-10-27

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics SA

Inventor： Arnaud Bourge ,  Tarek Lule ,  Gregory Roffet

IPC: H04N5/235 ,  H04N5/355 ,  H04N5/353 ,  H01L27/146

Abstract: An image sensor includes a plurality of pixels, where each of the plurality of pixels includes a photodiode. The image sensor is configured to capture images of a scene exposed with a flickering light source by for each of the plurality of pixels, acquiring a value representative of a light level at a corresponding pixel by gradually varying a value of sensitivity of the corresponding pixel.

公开(公告)号：US20160300330A1

公开(公告)日：2016-10-13

申请号：US14683368

申请日：2015-04-10

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Gregory Roffet

IPC: G06T5/00 ,  G06T5/10

CPC classification number: G06T5/003 ,  G06T5/10 ,  G06T2207/10024 ,  H04N1/3871 ,  H04N1/4074 ,  H04N5/208 ,  H04N9/045 ,  H04N9/77

Abstract: A method includes separating image data into high frequency image data and low frequency image data. The high frequency image data is separated into windows, with each window containing pixels. The low frequency image data is separated into windows corresponding respectively to the plurality of windows of the high frequency image data, with each window containing pixels. For each window in the high frequency image data, a number of textured pixels in the window is determined, the textured pixels being pixels that vary greatly in luminance value with respect to other pixels in the window, and a window modification is determined such that the number of textured pixels in the window is reduced. For each corresponding window in the low frequency image data, the window modification is applied, and each textured pixel in the window is corrected based upon the other pixels in the window.

Abstract translation: 一种方法包括将图像数据分离成高频图像数据和低频图像数据。 高频图像数据被分成窗口，每个窗口包含像素。 将低频图像数据分离成分别对应于高频图像数据的多个窗口的窗口，每个窗口包含像素。 对于高频图像数据中的每个窗口，确定窗口中的多个纹理像素，纹理像素是相对于窗口中的其他像素在亮度值上变化很大的像素，并且确定窗口修改，使得 窗口中纹理像素的数量减少了。 对于低频图像数据中的每个对应窗口，应用窗口修改，并且基于窗口中的其他像素校正窗口中的每个纹理像素。

公开(公告)号：US20140267822A1

公开(公告)日：2014-09-18

申请号：US14203917

申请日：2014-03-11

Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS

Inventor： Gregory Roffet

IPC: H04N5/225

CPC classification number: H04N5/225 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/20208

Abstract: Generating by a digital processing device, of a first digital image from a second digital image, by: for each pixel of the second image, determining a pixel luminance; dividing the interval ranging from the lowest to the highest luminance into a plurality of sub-intervals; and determining the value of at least one pixel of the first image by multiplying the value of a pixel of the second image by a gain determined by interpolation by taking into account the distance of the pixel luminance of the second image to the limits of the sub-interval containing this luminance.

Abstract translation: 通过以下方式由数字处理装置产生来自第二数字图像的第一数字图像：对于第二图像的每个像素，确定像素亮度; 将从最低亮度到最高亮度的间隔划分成多个子间隔; 以及通过将所述第二图像的像素的值乘以由所述第二图像确定的增益乘以所述第二图像的像素亮度与所述子像素的极限的距离来确定所述第一图像的至少一个像素的值 -interval包含这个亮度。

公开(公告)号：US20240331112A1

公开(公告)日：2024-10-03

申请号：US18733068

申请日：2024-06-04

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Cedric Tubert ,  Jeremie Teyssier ,  Gregory Roffet ,  Stephane Drouard

IPC: G06T5/70 ,  G06T5/20 ,  H04N5/21 ,  H04N25/60

CPC classification number: G06T5/70 ,  G06T5/20 ,  H04N5/21 ,  H04N25/60 ,  G06T2207/20012 ,  G06T2207/20192

Abstract: A method includes: receiving data signals from a plurality of pixels of an array of pixels; generating a plurality of signal-to-noise ratios by determining signal-to-noise ratios for each respective pixel of the plurality of pixels on the basis of the data signals received from the respective pixel; and filtering the data signals received from each pixel of the plurality of pixels by using an adaptive filter configured on the basis of the plurality of the signal-to-noise ratios to generate filtered data signals.

公开(公告)号：US09582861B2

公开(公告)日：2017-02-28

申请号：US14683368

申请日：2015-04-10

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Gregory Roffet

IPC: G06T5/00 ,  G06T5/10

CPC classification number: G06T5/003 ,  G06T5/10 ,  G06T2207/10024 ,  H04N1/3871 ,  H04N1/4074 ,  H04N5/208 ,  H04N9/045 ,  H04N9/77

Abstract: A method includes separating image data into high frequency image data and low frequency image data. The high frequency image data is separated into windows, with each window containing pixels. The low frequency image data is separated into windows corresponding respectively to the plurality of windows of the high frequency image data, with each window containing pixels. For each window in the high frequency image data, a number of textured pixels in the window is determined, the textured pixels being pixels that vary greatly in luminance value with respect to other pixels in the window, and a window modification is determined such that the number of textured pixels in the window is reduced. For each corresponding window in the low frequency image data, the window modification is applied, and each textured pixel in the window is corrected based upon the other pixels in the window.

Abstract translation: 一种方法包括将图像数据分离成高频图像数据和低频图像数据。 高频图像数据被分成窗口，每个窗口包含像素。 将低频图像数据分离成分别对应于高频图像数据的多个窗口的窗口，每个窗口包含像素。 对于高频图像数据中的每个窗口，确定窗口中的多个纹理像素，纹理像素是相对于窗口中的其他像素在亮度值上变化很大的像素，并且确定窗口修改，使得 窗口中纹理像素的数量减少了。 对于低频图像数据中的每个对应窗口，应用窗口修改，并且基于窗口中的其他像素校正窗口中的每个纹理像素。