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1. 发明授权

US09811887B2 Apparatus and method for image stabilization using image blur correction 有权
公开(公告)号：US09811887B2
公开(公告)日：2017-11-07
申请号：US15069212
申请日：2016-03-14
申请人： SK TELECOM CO., LTD.
发明人： Seungho Shin
IPC分类号： G06T5/00 , H04N5/232 , G06K9/46 , G06K9/62 , G06T5/40 , G06T7/20 , G06T7/238 , G06T7/246
CPC分类号： G06T5/003 , G06K9/4609 , G06K9/4652 , G06K9/4661 , G06K9/6202 , G06T5/40 , G06T7/20 , G06T7/238 , G06T7/246 , G06T2207/10024 , G06T2207/20021 , G06T2207/20201 , H04N5/23254 , H04N5/23267
摘要： An apparatus for stabilizing an image includes: an image analyzing unit analyzing characteristics of each block to calculate a weight of each block; a significant block extracting unit extracting, from the blocks, a block having a weight larger than a threshold value, as a significant block; a feature point extracting unit extracting a feature point from the significant block by extracting pixels of the significant block and comparing at least one of color and brightness between the pixels and neighboring pixels of the pixels; a local motion vector calculating unit calculating local motion vectors of blocks corresponding to the feature point by referring a previous frame of the frame and estimating a motion of the at least one block; a global motion vector calculating unit calculating a global motion vector based on the calculated at least one local motion vector.

2. 发明授权

US09800780B2 Image processing device, image processing method, and program to capture an image using fisheye lens 有权
公开(公告)号：US09800780B2
公开(公告)日：2017-10-24
申请号：US14888191
申请日：2014-03-28
申请人： SONY CORPORATION
发明人： Kazuteru Matsumoto
IPC分类号： H04N5/232 , G06T3/60 , G06T3/00 , G06T7/73 , G06T7/231 , G06T7/238
CPC分类号： H04N5/23229 , G06T3/0018 , G06T3/60 , G06T7/231 , G06T7/238 , G06T7/73 , G06T2207/10016 , G06T2207/20021 , H04N5/23206
摘要： [Object] To obtain more useful images when images taken using a fisheye lens are used without being remapped.[Solution] Provided is an image processing device including: an image acquisition unit that acquires taken images taken in chronological succession via a fisheye lens; a vector acquisition unit that acquires motion vectors from the taken images; and a point detection unit that detects a point of origin or a point of convergence of the motion vectors.

3. 发明授权

US11616968B2 Method and system of motion estimation with neighbor block pattern for video coding 有权
公开(公告)号：US11616968B2
公开(公告)日：2023-03-28
申请号：US17094742
申请日：2020-11-10
申请人： Intel Corporation
发明人： Zhipin Deng , Iole Moccagatta , Lidong Xu , Wenhao Zhang , Yi-Jen Chiu
IPC分类号： H04N19/51 , G06T7/238 , H04N19/57 , H04N19/176 , H04N19/593
摘要： Techniques related to motion estimation with neighbor block pattern for video coding.

4. 发明授权

US11341750B2 Quasi-parametric optical flow estimation 有权
公开(公告)号：US11341750B2
公开(公告)日：2022-05-24
申请号：US16268200
申请日：2019-02-05
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Hrushikesh Tukaram Garud , Manu Mathew , Soyeb Noormohammed Nagori
IPC分类号： G06T7/207 , G06V20/56 , H04N19/53 , G06T7/238 , G06T7/269 , G06T7/223 , G06V10/42 , G06V20/40
摘要： An image processing system includes a processor and optical flow (OF) determination logic for quantifying relative motion of a feature present in a first frame of video and a second frame of video that provide at least one of temporally and spatially ordered images with respect to the two frames of video. The OF determination logic configures the processor to implement performing OF estimation between the first frame and second frame using a pyramidal block matching (PBM) method to generate an initial optical flow (OF) estimate at a base pyramid level having integer pixel resolution, and refining the initial OF estimate using at least one pass of a modified Lucas-Kanade (LK) method to provide a revised OF estimate having fractional pixel resolution.

5. 发明申请

US20210201503A1 IMAGE ANALYSIS APPARATUS, IMAGE ANALYSIS METHOD AND PROGRAM RECORDING MEDIUM 有权
公开(公告)号：US20210201503A1
公开(公告)日：2021-07-01
申请号：US17131045
申请日：2020-12-22
申请人： NEC CORPORATION
发明人： Hayato ITSUMI , Florian BEYE , Yusuke SHINOHARA , Takanori IWAI
IPC分类号： G06T7/215 , G06T7/246 , G06F16/583 , G06T7/238
摘要： The image analysis apparatus includes: a first analysis unit that analyzes image frames by using a first image analysis model; a second analysis unit that can analyze the image frames by using a second image analysis model an analysis accuracy of which is lower; a storage unit that stores therein analyzed frames, which are already analyzed by using the first and second image analysis models, in association with an evaluation value for evaluating a result of an analysis performed with the second image analysis model; an extraction unit that extracts an analyzed frame that satisfies an extraction condition based on the evaluation value; and an update unit that updates the second image analysis model by using a result of an analysis performed with the first image analysis model on the extracted analyzed frame, and a result of an analysis performed with the first image analysis model on a new frame.

6. 发明申请

US20210042941A1 APPARATUS AND METHOD FOR EFFICIENT REGULARIZED IMAGE ALIGNMENT FOR MULTI-FRAME FUSION 有权
公开(公告)号：US20210042941A1
公开(公告)日：2021-02-11
申请号：US16727751
申请日：2019-12-26
申请人： Samsung Electronics Co., Ltd.
发明人： Ruiwen Zhen , John W. Glotzbach , Hamid R. Sheikh
IPC分类号： G06T7/33 , H04N5/235 , G06T5/50 , G06T5/00 , G06T7/207 , G06T7/246 , G06T7/238 , G06T7/215
摘要： A method includes receiving a reference image and a non-reference image; dividing the reference image into a plurality of tiles; determining, using an electronic device, a motion vector map using coarse-to-fine based motion vector estimation; and generating an output frame using the motion vector map with the reference image and the non-reference image.

7. 发明授权

US10755422B2 Tracking system and method thereof 有权
公开(公告)号：US10755422B2
公开(公告)日：2020-08-25
申请号：US16043169
申请日：2018-07-24
申请人： HTC Corporation
发明人： Yuan-Tung Chen , Tzu-Chieh Yu
IPC分类号： G06T7/00 , G06T7/238 , G06T7/73
摘要： The present disclosure provides a tracking system and method thereof. The tracking system comprises a trackable device with an appearance including a feature pattern and a tracking device. The tracking device comprises an optical sensor module configured to capture a first image which covers the trackable device. The tracking device further comprises a processor coupled to the optical sensor module. The processor is configured to retrieve a region of interest (ROI) of the first image based on the feature pattern, and locate a position of each of a plurality of feature blocks in the ROI, where each feature block contains a portion of the feature pattern. The processor further calculates a pose data of the trackable object according to the positions of the feature blocks.

8. 发明授权

US11240406B2 Object tracking using momentum and acceleration vectors in a motion estimation system 有权
公开(公告)号：US11240406B2
公开(公告)日：2022-02-01
申请号：US14823629
申请日：2015-08-11
申请人： Imagination Technologies Limited
发明人： Steven John Fishwick , Stephen Morphet
IPC分类号： H04N5/14 , G06T7/238
摘要： There is provided a method and apparatus for motion estimation in a sequence of video images. The method comprises a) subdividing each field or frame of a sequence of video images into a plurality of blocks, b) assigning to each block in each video field or frame a respective set of candidate motion vectors, c) determining for each block in a current video field or frame, which of its respective candidate motion vectors produces a best match to a block in a previous video field or frame, d) forming a motion vector field for the current video field or frame using the thus determined best match vectors for each block, and e) forming a further motion vector field by storing a candidate motion vector derived from the best match vector at a block location offset by a distance derived from the candidate motion vector. Finally, steps a) to e) are repeated for a video field or frame following the current video field or frame. The set of candidate motion vectors assigned at step b) to a block in the following video field or frame includes the candidates stored at that block location at step e) during the current video field or frame The method enables a block or tile based motion estimator to improve its accuracy by introducing true motion vector candidates derived from the physical behaviour of real world objects.

9. 发明授权

US11127114B2 Apparatus and method for efficient motion estimation 有权
公开(公告)号：US11127114B2
公开(公告)日：2021-09-21
申请号：US16809052
申请日：2020-03-04
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Mahesh M. Mehendale , Ajit Deepak Gupte
IPC分类号： G06T3/40 , H04N19/43 , H04N19/523 , G06T7/238
摘要： The architecture shown can perform global search, local search and local sub pixel search in a parallel or in a pipelined mode. All operations are in a streaming mode without the requirement of external intermediate data storage.

10. 发明授权

US10820012B2 Method, apparatus, and computer program product for providing motion estimator for video encoding 有权
公开(公告)号：US10820012B2
公开(公告)日：2020-10-27
申请号：US15370127
申请日：2016-12-06
申请人： Conversant Wireless Licensing S.a r.l.
发明人： Kemal Ugur , Jani Lainema , Antti Hallapuro
IPC分类号： H04N11/02 , H04N19/53 , H04N19/533 , H04N19/523 , G06T7/238 , H04N5/14 , H04N19/176 , H04N19/105
摘要： An apparatus for providing motion estimation for video encoding includes a selection element and a processing element. The selection element is configured to select a subset including less than all of candidate pixel locations from among a plurality of candidate pixel locations used for motion vector determination based on a relationship between a best candidate pixel location of a first level of accuracy and a best candidate pixel location of a second level of accuracy. The processing element is configured to process an input video sequence to determine a motion vector at the first level of accuracy, to refine the motion vector at the second level of accuracy, and to determine the motion vector at a third level of accuracy using only the subset of candidate pixel locations.

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