Processing

Please wait...

Settings

Settings

Goto Application

1. WO2021017023 - ITERATIVE MULTI-DIRECTIONAL IMAGE SEARCH SUPPORTING LARGE TEMPLATE MATCHING

Publication Number WO/2021/017023
Publication Date 04.02.2021
International Application No. PCT/CN2019/099670
International Filing Date 07.08.2019
IPC
G06F 16/53 2019.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
50of still image data
53Querying
CPC
G06F 16/535
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
50of still image data
53Querying
535Filtering based on additional data, e.g. user or group profiles
G06F 16/56
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
50of still image data
56having vectorial format
G06K 9/6203
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
6201Matching; Proximity measures
6202Comparing pixel values or logical combinations thereof, or feature values having positional relevance, e.g. template matching
6203Shifting or otherwise transforming the patterns to accommodate for positional errors
G06T 3/0056
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3Geometric image transformation in the plane of the image
0056the transformation method being selected according to the characteristics of the input image
G06T 3/40
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3Geometric image transformation in the plane of the image
40Scaling the whole image or part thereof
G06T 3/60
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3Geometric image transformation in the plane of the image
60Rotation of a whole image or part thereof
Applicants
  • HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE COMPANY LIMITED [CN]/[CN]
Inventors
  • QIU, Tian
Agents
  • CHINA TRUER IP
Priority Data
16/524,80229.07.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ITERATIVE MULTI-DIRECTIONAL IMAGE SEARCH SUPPORTING LARGE TEMPLATE MATCHING
(FR) RECHERCHE MULTIDIRECTIONNELLE RÉPÉTÉE D'UNE IMAGE PRENANT EN CHARGE UNE CORRESPONDANCE DE MODÈLE À GRANDE ÉCHELLE
Abstract
(EN)
Systems and methods which provide iterative multi-directional image searching are described. A multi-directional searching pattern is utilized for defining one or more searching areas within a source image. A searching area of is provided within a source image for searching for a template image in the multiple directions of the multi-directional searching pattern. A location of the searching area within the source image may be updated iteratively, such as based upon motion vectors derived from the searching, until a template image match position is identified within the source image. The template image and the searching area within a source image are transformed to 1D representations corresponding to each direction of the multi-directional image search. Rotation and scale variance of the subject (e. g., object of interest) of the template image are accommodated within the source image.
(FR)
L'invention concerne des systèmes et des procédés permettant une recherche multidirectionnelle répétée d'une image. Un motif de recherche multidirectionnelle est utilisé pour définir une ou plusieurs zones de recherche dans une image source. Une zone de recherche est située dans une image source afin de rechercher une image modèle dans les multiples directions du motif de recherche multidirectionnelle. Une position de la zone de recherche dans l'image source peut être mise à jour de manière répétée, par exemple sur la base de vecteurs de mouvement dérivés de la recherche, jusqu'à ce qu'une position de correspondance d'une image modèle soit identifiée dans l'image source. L'image modèle et la zone de recherche dans une image source sont transformées en représentations 1D correspondant à chaque direction de la recherche multidirectionnelle d'une image. La rotation et la variance d'échelle du sujet (par exemple un objet digne d'intérêt) de l'image modèle sont intégrées dans l'image source.
Also published as
CN201980001506.5
Latest bibliographic data on file with the International Bureau