公开(公告)号：US20130162871A1

公开(公告)日：2013-06-27

申请号：US13722949

申请日：2012-12-20

Applicant: STMicroelectronics S.r.l.

Inventor： Angelo BOSCO ,  Arcangelo Ranieri BRUNA ,  Davide GIACALONE

IPC: H04N5/217

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。

公开(公告)号：US20140118585A1

公开(公告)日：2014-05-01

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: H04N9/07

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：US20130336590A1

公开(公告)日：2013-12-19

申请号：US13875541

申请日：2013-05-02

Applicant: STMicroelectronics S.r.l.

Inventor： Alexandro SENTINELLI ,  Luca CELETTO ,  Arcangelo Ranieri BRUNA ,  Giuseppe SPAMPINATO ,  Claudio Domenico MARCHISIO

IPC: G06K9/62

CPC classification number: G06K9/6201 ,  G06F16/739 ,  H04N5/772

Abstract: An embodiment includes a method and an apparatus for the generation of a visual story board in real time in an image-capturing device including a photo sensor and a buffer, wherein the method includes the consecutively performed steps: starting the recording of a video, receiving information on an image frame of the video, comparing the information on the received image frame with information on at least one of a plurality of image frames wherein the information on the plurality of image frames has previously been stored in the buffer, storing the information on the received image frame in the buffer depending on the result of the comparison, and finishing the recording of the video.

Abstract translation: 一个实施例包括一种用于在包括光传感器和缓冲器的图像捕获设备中实时生成视觉故事板的方法和装置，其中该方法包括连续执行的步骤：开始录像，接收 关于视频的图像帧的信息，将关于接收到的图像帧的信息与关于多个图像帧的信息先前已经存储在缓冲器中的多个图像帧中的至少一个的信息进行比较，将该信息存储在 根据比较结果在缓冲器中接收的图像帧，并完成视频的记录。

公开(公告)号：US20140204227A1

公开(公告)日：2014-07-24

申请号：US14163090

申请日：2014-01-24

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe SPAMPINATO ,  Arcangelo Ranieri BRUNA

IPC: H04N5/232

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。

公开(公告)号：US20200160102A1

公开(公告)日：2020-05-21

申请号：US16752347

申请日：2020-01-24

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Arcangelo Ranieri BRUNA ,  Danilo Pietro PAU

IPC: G06K9/62 ,  G06K9/46 ,  G06T7/33 ,  G06T7/73 ,  G06K9/32 ,  H04N19/57

Abstract: An image processing system has one or more memories and image processing circuitry coupled to the one or more memories. The image processing circuitry, in operation, compares a first image to feature data in a comparison image space using a matching model. The comparing includes: unwarping keypoints in keypoint data of the first image; and comparing the unwarped keypoints and descriptor data associated with the first image to the feature data of the comparison image. The image processing circuitry determines whether the first image matches the comparison image based on the comparing.

公开(公告)号：US20170169311A1

公开(公告)日：2017-06-15

申请号：US15169232

申请日：2016-05-31

Applicant: STMicroelectronics S.r.l.

Inventor： Giuseppe SPAMPINATO ,  Arcangelo Ranieri BRUNA ,  Viviana D'ALTO

IPC: G06K9/62 ,  G06T7/20 ,  G06K9/48

CPC classification number: G06K9/6218 ,  G06K9/481 ,  G06K9/6202 ,  G06K9/623 ,  G06T7/2033 ,  G06T7/215 ,  G06T7/246 ,  G06T7/277 ,  G06T2207/10016 ,  G06T2207/20024

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.

公开(公告)号：US20130216097A1

公开(公告)日：2013-08-22

申请号：US13773847

申请日：2013-02-22

Applicant: STMicroelectronics S.r.l.

Inventor： Danilo Pietro PAU ,  Arcangelo Ranieri BRUNA

IPC: G06K9/46

CPC classification number: G06K9/4642 ,  G06K9/4671 ,  G06T2207/20021

Abstract: An embodiment is a method for detecting image features, the method including extracting a stripe from a digital image, the stripe including of a plurality of blocks; processing the plurality of blocks for localizing one or more keypoints; and detecting one or more image features based on the one or more localized keypoints.

Abstract translation: 一个实施例是一种用于检测图像特征的方法，该方法包括从数字图像提取条带，包括多个块的条带; 处理多个块以用于定位一个或多个关键点; 以及基于所述一个或多个本地化关键点检测一个或多个图像特征。