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31. 发明申请

WO2022053192A1 PRODUCING AN IMAGE FRAME USING DATA FROM AN EVENT CAMERA 审中-公开
公开(公告)号：WO2022053192A1
公开(公告)日：2022-03-17
申请号：PCT/EP2021/066440
申请日：2021-06-17
申请人： FOTONATION LIMITED
发明人： BARTHA, Lorant , ZAHARIA, Corneliu , GEORGESCU, Vlad , LEMLEY, Joe
IPC分类号： H04N5/335 , G06T7/20
摘要： A method of producing an image frame from event packets received from an event camera comprises: forming a tile buffer sized to accumulate event information for a subset of image tiles, the tile buffer having an associated tile table that determines a mapping between each tile of the image frame for which event information is accumulated in the tile buffer and the image frame. For each event packet: an image tile corresponding to the pixel location of the event packet is identified; responsive to the tile buffer storing information for one other event corresponding to the image tile, event information is added to the tile buffer; and responsive to the tile buffer not storing information for another event corresponding to the image tile and responsive to the tile buffer being capable of accumulating event information for at least one more tile, the image tile is added to the tile buffer.

32. 发明申请

WO2021254735A1 METHOD AND SYSTEM TO DETERMINE THE LOCATION AND/OR ORIENTATION OF A HEAD 审中-公开
公开(公告)号：WO2021254735A1
公开(公告)日：2021-12-23
申请号：PCT/EP2021/063926
申请日：2021-05-25
申请人： FOTONATION LIMITED
发明人： CORCORAN, Peter , LEMLEY, Joseph
IPC分类号： G06K9/00 , G06T2207/10012 , G06T2207/10044 , G06T2207/20084 , G06T2207/30201 , G06T2207/30268 , G06T7/593 , G06T7/73 , G06V10/82 , G06V20/59 , G06V40/165 , G06V40/168 , G06V40/176
摘要： A method for determining an absolute depth map to monitor the location and pose of a head (100) being imaged by a camera comprises: acquiring (20) an image from the camera (110) including a head with a facial region; determining (23) at least one distance from the camera (110) to a facial feature of the facial region using a distance measuring sub-system (120); determining (24) a relative depth map of facial features within the facial region; and combining (25) the relative depth map with the at least one distance to form an absolute depth map for the facial region.

33. 发明申请

WO2019102442A1 SYSTEMS AND METHODS FOR 3D FACIAL MODELING 审中-公开
公开(公告)号：WO2019102442A1
公开(公告)日：2019-05-31
申请号：PCT/IB2018/059366
申请日：2018-11-27
申请人： FOTONATION LIMITED
发明人： VENKATARAMAN, Kartik
IPC分类号： G06T7/149
摘要： In an embodiment, a 3D facial modeling system includes a plurality of cameras configured to capture images from different viewpoints, a processor, and a memory containing a 3D facial modeling application and parameters defining a face detector, wherein the 3D facial modeling application directs the processor to obtain a plurality of images of a face captured from different viewpoints using the plurality of cameras, locate a face within each of the plurality of images using the face detector, wherein the face detector labels key feature points on the located face within each of the plurality of images, determine disparity between corresponding key feature points of located faces within the plurality of images, and generate a 3D model of the face using the depth of the key feature points.

34. 发明申请

WO2017140438A1 A METHOD OF STABILIZING A SEQUENCE OF IMAGES 审中-公开
标题翻译：一种稳定图像序列的方法
公开(公告)号：WO2017140438A1
公开(公告)日：2017-08-24
申请号：PCT/EP2017/050390
申请日：2017-01-10
申请人： FOTONATION LIMITED
发明人： STEC, Piotr
IPC分类号： H04N5/232 , G06T7/20 , G06T7/30
CPC分类号： G06T5/006 , H04N5/23229 , H04N5/23258 , H04N5/23287
摘要： A method operable within an image capture device for stabilizing a sequence of images captured by the image capture device is disclosed. The method comprises,using lens based sensors indicating image capture device movement during image acquisition, performing optical image stabilization (OIS) during acquisition of each image of the sequence of images to provide a sequence of OIS corrected images. Movement of the device for each frame during which each OIS corrected image is captured is determined using inertial measurement sensors. At least an estimate of OIS control performed during acquisition of an image is obtained. The estimate is removed from the intra-frame movement determined for the frame during which the OIS corrected image was captured to provide a residual measurement of movement for the frame. Electronic image stabilization (EIS) of each OIS corrected image based on the residual measurement is performed to provide a stabilized sequence of images.
摘要翻译：公开了一种在图像捕获装置内可操作的用于稳定由图像捕获装置捕获的图像序列的方法。该方法包括使用指示图像采集期间的图像捕获设备移动的基于透镜的传感器，在获取图像序列的每个图像期间执行光学图像稳定（OIS）以提供一系列OIS校正的图像。使用惯性测量传感器确定捕获每个OIS校正图像的每个帧的设备运动。至少获得在获取图像期间执行的OIS控制的估计。该估计从针对在其期间捕获OIS校正图像的帧确定的帧内移动中移除，以提供帧的移动的残余测量。执行基于残余测量的每个OIS校正图像的电子图像稳定（EIS）以提供稳定的图像序列。

35. 发明申请

WO2017054941A1 A METHOD AND SYSTEM FOR TRACKING AN OBJECT 审中-公开
标题翻译：跟踪对象的方法和系统
公开(公告)号：WO2017054941A1
公开(公告)日：2017-04-06
申请号：PCT/EP2016/063446
申请日：2016-06-13
申请人： FOTONATION LIMITED
发明人： MUNTEANU, Mihai Constantin , CALIMAN, Alexandru , DINU, Dragos
IPC分类号： G06T7/20
CPC分类号： G06N3/08 , G06K9/4628 , G06K9/627 , G06N3/04 , G06T7/20 , G06T7/248 , G06T7/269 , G06T2207/10004 , G06T2207/10024 , G06T2207/20021 , G06T2207/20084 , G06T2207/20104
摘要： A method of tracking an object across a stream of images comprises determining a region of interest (ROI) bounding the object in an initial frame of an image stream. A HOG map is provided for the ROI by: dividing the ROI into an array of MxN cells, each cell comprising a plurality of image pixels;and determining a HOG for each of the cells. The HOG map is stored as indicative of the features of the object. Subsequent frames are acquired from the stream of images. The frames are scanned ROI by ROI to identify a candidate ROI having a HOG map best matching the stored HOG map features. If the match meets a threshold, the stored HOG map indicative of the features of the object is updated according to the HOG map for the best matching candidate ROI.
摘要翻译：跨越图像流跟踪对象的方法包括确定在图像流的初始帧中界定对象的感兴趣区域（ROI）。通过以下方式为ROI提供HOG映射：将ROI划分为M×N个单元的阵列，每个单元包括多个图像像素;以及为每个单元确定HOG。 HOG地图被存储为对象的特征的指示。从图像流中获取后续帧。这些帧通过ROI扫描ROI，以识别具有与存储的HOG地图特征最佳匹配的HOG图的候选ROI。如果匹配符合阈值，则根据用于最佳匹配候选ROI的HOG映射来更新指示对象的特征的存储的HOG映射。

36. 发明申请

WO2016173794A1 A METHOD AND APPARATUS FOR PRODUCING A VIDEO STREAM 审中-公开
标题翻译：一种用于制作视频流的方法和装置
公开(公告)号：WO2016173794A1
公开(公告)日：2016-11-03
申请号：PCT/EP2016/057011
申请日：2016-03-31
申请人： FOTONATION LIMITED
发明人： CONDOROVICI, Razvan , STAN, Cosmin , DOBRE, Ilinca
IPC分类号： G06T5/00 , G06T5/50 , H04N5/232
CPC分类号： H04N19/51 , G06T5/002 , G06T5/003 , G06T5/50 , G06T2207/10016 , G06T2207/10148 , G06T2207/20201 , G06T2207/20208 , H04N5/2355
摘要： A method of processing a stream of images comprises obtaining an image of a scene with a relatively short exposure time (SET) and obtaining an image of the same scene with a relatively longer exposure time (LET). Motion blur characteristics for the SET image corresponding to motion within the LET image are determined and the motion blur characteristics are applied to the SET image. The blurred SET image and the LET image are blended to provide a HDR image. The process is repeated for successive pairs of images in the stream to provide a sequence of HDR images which can be encoded in a video stream.
摘要翻译：处理图像流的方法包括以相对短的曝光时间（SET）获得场景的图像，并以相对较长的曝光时间（LET）获得相同场景的图像。确定与LET图像内的运动对应的SET图像的运动模糊特性，并将运动模糊特性应用于SET图像。将模糊的SET图像和LET图像混合以提供HDR图像。在流中连续的图像对重复该过程以提供可以在视频流中编码的HDR图像序列。

37. 发明申请

WO2016000874A1 A METHOD FOR CALIBRATING AN IMAGE CAPTURE DEVICE 审中-公开
标题翻译：一种用于校准图像捕获设备的方法
公开(公告)号：WO2016000874A1
公开(公告)日：2016-01-07
申请号：PCT/EP2015/061919
申请日：2015-05-28
申请人： FOTONATION LIMITED
发明人： MALAESCU, Alexandru , NANU, Florin , BIGIOI, Petronel , CORCORAN, Peter
IPC分类号： G02B7/28 , H04N5/232
CPC分类号： H04N17/002 , G02B7/08 , G02B7/102 , G02B7/28 , G02B7/36 , H04N5/23212
摘要： A method for calibrating an image capture device comprises mounting at least one sample device from a batch for movement through a plurality of orientations relative to a horizontal plane. For a given orientation, the sample device is focused at a sequence of positions, each position being at a respective focus distance from the device. A lens actuator setting is recorded for the sample device at each position. This is repeated at a plurality of distinct orientations of the sample device. Respective relationships are determined between lens actuator settings at any given position for distinct orientations from the plurality of distinct orientations and actuator settings at a selected orientation of the plurality of distinct orientations. Lens actuator settings for the image capture device to be calibrated are recorded at least at two points of interest (POI), each a specified focus distance from the device with the image capture device positioned at the selected orientation. The image capture device is calibrated for the plurality of distinct orientations based on the determined relationships and the recorded lens actuator settings.
摘要翻译：用于校准图像捕获装置的方法包括从批料安装至少一个样品装置以通过相对于水平面的多个取向运动。对于给定的取向，采样设备被聚焦在一系列位置，每个位置处于与设备相对应的焦距。在每个位置记录样品装置的透镜致动器设置。这在样品装置的多个不同取向上重复。在任何给定位置处的透镜致动器设置之间，在多个不同取向的选定取向处的多个不同取向和致动器设置的不同取向上确定相关关系。要校准的图像捕获设备的镜头执行器设置至少记录在两个感兴趣点（POI）上，每个距离设备与图像捕获设备的指定焦距距离位于选定的方向。基于确定的关系和记录的镜头致动器设置，针对多个不同的取向校准图像捕获装置。

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