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公开(公告)号：US20130286241A1
公开(公告)日：2013-10-31
申请号：US13841583
申请日：2013-03-15
Applicant: STMicroelectronics S.r.l.
IPC: H04N5/232
CPC classification number: H04N5/23248 , H04N5/144 , H04N5/23254 , H04N5/23267
Abstract: A method and system for filtering an image frame of a video sequence from spurious motion, comprising the steps of dividing the image frame and a preceding image frame of the video sequence into blocks of pixels; determining motion vectors for the blocks of the image frame; determining inter-frame transformation parameters for the image frame based on the determined motion vectors; and generating a filtered image frame based on the determined inter-frame transformation parameters; wherein the image frame is dived into overlapping blocks.
Abstract translation: 一种用于从伪运动滤波视频序列的图像帧的方法和系统，包括以下步骤：将图像帧和视频序列的先前图像帧分割成像素块; 确定所述图像帧的块的运动矢量; 基于所确定的运动矢量确定所述图像帧的帧间变换参数; 以及基于所确定的帧间变换参数生成滤波图像帧; 其中图像帧被划分成重叠块。
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公开(公告)号：US20210248757A1
公开(公告)日：2021-08-12
申请号：US17220475
申请日：2021-04-01
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Salvatore Curti , Arcangelo Ranieri Bruna
IPC: G06T7/223
Abstract: In accordance with an embodiment, a method of detecting moving objects via a moving camera includes receiving a sequence of images from the moving camera; determining optical flow data from the sequence of images; decomposing the optical flow data into global motion related motion vectors and local object related motion vectors; calculating global motion parameters from the global motion related motion vectors; calculating moto-compensated vectors from the local object related motion vectors and the calculated global motion parameters; compensating the local object related motion vectors using the calculated global motion parameters; and clustering the compensated local object related motion vectors to generate a list of detected moving objects.
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公开(公告)号：US10977804B2
公开(公告)日：2021-04-13
申请号：US16774625
申请日：2020-01-28
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Salvatore Curti , Arcangelo Ranieri Bruna
Abstract: In accordance with an embodiment, a method of detecting moving objects via a moving camera includes receiving a sequence of images from the moving camera; determining optical flow data from the sequence of images; decomposing the optical flow data into global motion related motion vectors and local object related motion vectors; calculating global motion parameters from the global motion related motion vectors; calculating moto-compensated vectors from the local object related motion vectors and the calculated global motion parameters; compensating the local object related motion vectors using the calculated global motion parameters; and clustering the compensated local object related motion vectors to generate a list of detected moving objects.
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公开(公告)号：US10242272B2
公开(公告)日：2019-03-26
申请号：US15471138
申请日：2017-03-28
Applicant: STMicroelectronics S.r.l.
IPC: G06K9/00 , G06K9/46 , G06K9/62 , G08G1/0962
Abstract: A sequence of images obtained by a camera mounted on a vehicle is processed in order to generate Optical Flow data including a list of Motion Vectors being associated with respective features in the sequence of images. The Optical Flow data is analyzed to calculate a Vanishing Point by calculating the mean point of all intersections of straight lines passing through motion vectors lying in a road. An Horizontal Filter subset is determined taking into account the Vanishing Point and a Bound Box list from a previous frame in order to filter from the Optical Flow the horizontal motion vectors. The subset of Optical Flow is clustered to generate the Bound Box list retrieving the moving objects in a scene. The Bound Box list is sent to an Alert Generation device and an output video shows the input scene where the detected moving objects are surrounded by a Bounding Box.
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5.发明申请公开(公告)号：US20200258240A1
公开(公告)日：2020-08-13
申请号：US16774625
申请日：2020-01-28
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Salvatore Curti , Arcangelo Ranieri Bruna
IPC: G06T7/223
Abstract: In accordance with an embodiment, a method of detecting moving objects via a moving camera includes receiving a sequence of images from the moving camera; determining optical flow data from the sequence of images; decomposing the optical flow data into global motion related motion vectors and local object related motion vectors; calculating global motion parameters from the global motion related motion vectors; calculating moto-compensated vectors from the local object related motion vectors and the calculated global motion parameters; compensating the local object related motion vectors using the calculated global motion parameters; and clustering the compensated local object related motion vectors to generate a list of detected moving objects.
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Patent Agency Ranking
公开(公告)号：US10178313B2
公开(公告)日：2019-01-08
申请号：US14278680
申请日：2014-05-15
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Arcangelo Ranieri Bruna
Abstract: A panning device for processing relative motion vectors and absolute motion vectors obtained from a video sequence, includes: a panning filter module, such as a high-pass IIR filter, for subjecting relative motion vectors to panning processing, an adder module for adding the relative motion vectors subjected to panning in the panning filter module to absolute motion vectors to obtain respective summed values of motion vectors, a clipping module for subjecting the summed values of motion vectors obtained in the adder module to clipping according to a selected cropping window for obtaining final output absolute motion vectors, a first leak integrator arranged after the panning filter module, and a second leak integrator arranged after the clipping module.
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公开(公告)号：US10380433B2
公开(公告)日：2019-08-13
申请号：US15472562
申请日：2017-03-29
Applicant: STMicroelectronics S.r.l.
Abstract: A sequence of images is processed to generate optical flow data including a list of motion vectors. The motion vectors are grouped based on orientation into a first set of moving away motion vectors and a second set of moving towards motion vectors. A vanishing point is determined as a function of the first set of motion vectors and a center position of the images is determined. Pan and tilt information is computed from the distance difference between the vanishing point and the center position. Approaching objects are identified from the second set as a function of position, length and orientation, thereby identifying overtaking vehicles. Distances to the approaching objects are determined from object position, camera focal length, and pan and tilt information. A warning signal is issued as a function of the distances.
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8.发明申请公开(公告)号：US20180082133A1
公开(公告)日：2018-03-22
申请号：US15472562
申请日：2017-03-29
Applicant: STMicroelectronics S.r.l.
CPC classification number: G06K9/00791 , B60W30/095 , G06K9/00798 , G06K9/00805 , G06K9/00825 , G06T7/215 , G06T7/246 , G06T7/60 , G06T7/70 , G06T7/73 , G06T2207/30244 , G08G1/166 , G08G1/167
Abstract: A sequence of images is processed to generate optical flow data including a list of motion vectors. The motion vectors are grouped based on orientation into a first set of moving away motion vectors and a second set of moving towards motion vectors. A vanishing point is determined as a function of the first set of motion vectors and a center position of the images is determined. Pan and tilt information is computed from the distance difference between the vanishing point and the center position. Approaching objects are identified from the second set as a function of position, length and orientation, thereby identifying overtaking vehicles. Distances to the approaching objects are determined from object position, camera focal length, and pan and tilt information. A warning signal is issued as a function of the distances.
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9.发明授权Method and device for stabilizing video sequences, related video-capture apparatus and computer-program product 有权用于稳定视频序列的方法和装置，相关的视频捕获装置和计算机程序产品公开(公告)号：US09319586B2
公开(公告)日：2016-04-19
申请号：US14163090
申请日：2014-01-24
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Arcangelo Ranieri Bruna
CPC classification number: H04N5/23254 , G06T7/246 , H04N5/23261 , H04N5/23267 , H04N5/23277
Abstract: According to an embodiment, a sequence of video frames as produced in a video-capture apparatus such as a video camera is stabilized against hand shaking or vibration by:—subjecting a pair of frames in the sequence to feature extraction and matching to produce a set of matched features;—subjecting the set of matched features to an outlier removal step; and—generating stabilized frames via motion-model estimation based on features resulting from outlier removal. Motion-model estimation is performed based on matched features having passed a zone-of-interest test confirmative that the matched features passing the test are distributed over a plurality of zones across the frames.
Abstract translation: 根据实施例，在诸如摄像机的视频捕获设备中产生的视频帧序列通过以下方式稳定，以防止手抖动或振动： - 在序列中插入一对帧以特征提取和匹配以产生一组 的匹配特征; - 将匹配的特征集合发布到异常值去除步骤; 并基于异常值去除产生的特征，通过运动模型估计产生稳定帧。 基于已经通过感兴趣区域测试的匹配特征来执行运动模型估计，证实通过测试的匹配特征分布在跨越帧的多个区域上。
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公开(公告)号：US09100573B2
公开(公告)日：2015-08-04
申请号：US13841583
申请日：2013-03-15
Applicant: STMicroelectronics S.r.l.
CPC classification number: H04N5/23248 , H04N5/144 , H04N5/23254 , H04N5/23267
Abstract: A method and system for filtering an image frame of a video sequence from spurious motion, comprising the steps of dividing the image frame and a preceding image frame of the video sequence into blocks of pixels; determining motion vectors for the blocks of the image frame; determining inter-frame transformation parameters for the image frame based on the determined motion vectors; and generating a filtered image frame based on the determined inter-frame transformation parameters; wherein the image frame is dived into overlapping blocks.
Abstract translation: 一种用于从伪运动滤波视频序列的图像帧的方法和系统，包括以下步骤：将图像帧和视频序列的先前图像帧分割成像素块; 确定所述图像帧的块的运动矢量; 基于所确定的运动矢量确定所述图像帧的帧间变换参数; 以及基于所确定的帧间变换参数生成滤波图像帧; 其中图像帧被划分成重叠块。
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