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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：US11593949B2
公开(公告)日：2023-02-28
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：US10140550B2
公开(公告)日：2018-11-27
申请号：US15169232
申请日：2016-05-31
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Arcangelo Ranieri Bruna , Viviana D'Alto
Abstract: Image processing circuitry processes image frames in a sequence of image frames, for example, to identify objects of interest. The processing includes filtering motion vectors associated with a current image frame, grouping the filtered motion vectors associated with the current image frame into a set of clusters associated with the current image frame, and selectively merging clusters in the set of clusters associated with the current image frame. At least one of the filtering, the grouping and the merging may be based on one or more clusters associated with one or more previous image frames in the sequence of image frames. Motion vectors included in merged clusters associated with a previous frame may be added to filtered motion vectors before grouping the motion vectors in the current frame.
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14.发明申请公开(公告)号：US20180082132A1
公开(公告)日：2018-03-22
申请号：US15471138
申请日：2017-03-28
Applicant: STMicroelectronics S.r.l.
IPC: G06K9/00 , G08G1/0962 , G06K9/62 , G06K9/46
CPC classification number: G06K9/00791 , G06K9/00335 , G06K9/00805 , G06K9/46 , G06K9/6218 , G06K2009/4666 , G08G1/09626
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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15.发明授权Method and apparatus for computing image pyramids and related computer program product 有权用于计算图像金字塔和相关计算机程序产品的方法和装置公开(公告)号：US09317898B2
公开(公告)日：2016-04-19
申请号：US14156327
申请日：2014-01-15
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Danilo Pietro Pau , Arcangelo Ranieri Bruna , Ettore Napoli , Giorgio Lopez
CPC classification number: G06T3/4092 , G06F17/30247 , G06K9/00986 , G06K9/4671 , G06K9/527 , G06T3/4084
Abstract: An embodiment of a method for computing pyramids of input images (I) in a transformed domain, e.g., for search and retrieval purposes, includes:—arranging input images in blocks to produce input image blocks,—subjecting the input image blocks to block processing including: transform into a transformed domain, subjecting the image blocks transformed into a transformed domain to filtering, subjecting the image blocks transformed into a transformed domain and filtered to inverse transform implementing an inverse transform with respect to the previous transform into a transformed domain, thus producing a set of processed blocks. The set of processed blocks, which is recomposeable to an image pyramid, may be used, e.g., in detecting extrema points in images in the pyramid, extracting a patch of given size around the extrema points detected, and processing the patch to obtain local descriptors such as SIFT descriptors of a feature.
Abstract translation: 用于计算变换域中的输入图像（I）的棱锥的方法的实施例，例如用于搜索和检索目的，包括： - 以块为单位布置输入图像以产生输入图像块， - 输入输入图像块以阻止处理 包括：变换为变换域，对经变换的域进行滤波，对变换后的图像块进行变换后进行逆变换，将前一变换的逆变换实现为变换域， 产生一组加工块。 可以使用可重构为图像金字塔的处理块的集合，例如，在检测金字塔中的图像中的极值点时，在检测到的极值点处提取给定大小的块，并且处理该补丁以获得局部描述符 例如功能的SIFT描述符。
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Patent Agency Ranking
公开(公告)号：US09077873B2
公开(公告)日：2015-07-07
申请号：US13722949
申请日：2012-12-20
Applicant: STMicroelectronics S.r.l.
Inventor： Angelo Bosco , Arcangelo Ranieri Bruna , Davide Giacalone
CPC classification number: H04N5/2176 , G06T5/005 , G06T2207/10024 , G06T2207/20012 , H04N5/367 , H04N9/045
Abstract: Image defects in digital images are easily detectable by the human eye but may be difficult to detect in a computer-implemented fashion. In an embodiment of a digital-image-acquisition device, defects are removed on the CFA domain before color interpolation takes place. In order to allow cancellation of couplets of defective pixels, a two pass embodiment is presented. Such embodiment presents methods and systems that can remove both couplets and singlets without damaging the image. The system includes a ring corrector that detects a defect in the ring of pixels that surround a central pixel, a singlet corrector that detects and corrects the central pixel and removes a couplet if the ring corrector is activated, whereas if the ring corrector is switched off, the singlet corrector only removes singlets, and a peak-and-valley detector that avoids overcorrection by avoiding correcting signal peaks or valleys in case of spikes or drops in signal.
Abstract translation: 数字图像中的图像缺陷易于被人眼检测，但可能难以以计算机实现的方式检测。 在数字图像采集设备的实施例中，在进行颜色插值之前，在CFA域上去除缺陷。 为了允许消除对偶的有缺陷的像素，提出了两步实施例。 这种实施例提出了可以在不损坏图像的情况下移除对联和单个的方法和系统。 该系统包括环形校正器，其检测环绕中心像素的像素环中的缺陷;单校正器，其检测和校正中心像素，并且如果环形校正器被激活则去耦合，而如果环形校正器被关闭 ，单线校正器仅消除单峰，以及峰谷检测器，通过避免在信号峰值或信号下降时纠正信号峰值或谷值，避免过度校正。
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17.发明申请公开(公告)号：US20140348239A1
公开(公告)日：2014-11-27
申请号：US14278680
申请日：2014-05-15
Applicant: STMicroelectronics S.r.l.
Inventor： Giuseppe Spampinato , Arcangelo Ranieri Bruna
IPC: H04N19/51
CPC classification number: H04N5/23254 , G06T5/003 , G06T7/246 , G06T2207/20201 , H04N5/23248 , H04N5/23251
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.
Abstract translation: 用于处理从视频序列获得的相对运动矢量和绝对运动矢量的平移装置包括：用于对相对运动矢量进行平移处理的平移滤波器模块，例如高通IIR滤波器，用于将相对运动矢量相加 在平移滤波器模块中进行平移的运动矢量到绝对运动矢量，以获得运动矢量的各个相加值;削波模块，用于根据所选择的裁剪窗口对加法器模块中获得的运动矢量的相加值进行削波，以获得最终的运动矢量 输出绝对运动矢量，布置在平移滤波器模块之后的第一泄漏积分器和布置在限幅模块之后的第二泄漏积分器。
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18.发明授权Method of chromatic classification of pixels and method of adaptive enhancement of a color image 有权像素的色彩分类方法和彩色图像的自适应增强方法公开(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。
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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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公开(公告)号：US20180190122A1
公开(公告)日：2018-07-05
申请号：US15639623
申请日：2017-06-30
Applicant: STMicroelectronics S.r.l.
Inventor： Nunziata Ivana Guarneri , Arcangelo Ranieri Bruna
CPC classification number: G08G1/167 , G06K9/00798 , G06K9/48 , G06K2009/487 , G06T7/13 , G06T7/174 , G06T2207/10016 , G06T2207/30256
Abstract: Method for generating a lane departure warning in a vehicle, comprising acquiring a plurality of frames of a digital image of a road on which the vehicle is running, the digital image of a road including the image of a lane within which the vehicle is running and of marking lines of the lane, for each of the acquired frames, extracting edge points of the frame, analyzing the edge points to evaluate a lane departure status, the evaluation including performing a lane departure verification procedure including identifying in the frame points representative of the position of the lane marking lines, generating a lane departure alert if a lane departure status is detected by the lane departure verification procedure. In the described method, the lane departure verification procedure includes comparing the position of the points to reference positions of the lane, the reference positions of the lane being obtained by a lane calibration procedure performed on a set of acquired frames, the lane calibration procedure including filtering edge points of the image frame belonging to an area of a horizontal stripe of the frame including a plurality of rows of the frame.
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