Processing

Please wait...

Settings

Settings

Goto Application

1. WO2010093408 - VIDEO MATTING BASED ON FOREGROUND-BACKGROUND CONSTRAINT PROPAGATION

Publication Number WO/2010/093408
Publication Date 19.08.2010
International Application No. PCT/US2010/000009
International Filing Date 05.01.2010
IPC
G06K 9/36 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR 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
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
CPC
G06T 2207/10016
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
10Image acquisition modality
10016Video; Image sequence
G06T 2207/20092
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
20Special algorithmic details
20092Interactive image processing based on input by user
G06T 2207/20096
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
20Special algorithmic details
20092Interactive image processing based on input by user
20096Interactive definition of curve of interest
G06T 7/174
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
10Segmentation; Edge detection
174involving the use of two or more images
G06T 7/254
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
20Analysis of motion
254involving subtraction of images
Applicants
  • THOMSON LICENSING [FR]/[FR] (AllExceptUS)
  • BHAGAVATHY, Sitaram [IN]/[US] (UsOnly)
  • LLACH, Joan [ES]/[US] (UsOnly)
Inventors
  • BHAGAVATHY, Sitaram
  • LLACH, Joan
Agents
  • SHEDD, Robert, D.
Priority Data
61/207,26110.02.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VIDEO MATTING BASED ON FOREGROUND-BACKGROUND CONSTRAINT PROPAGATION
(FR) DÉTOURAGE VIDÉO SUR LA BASE D'UNE PROPAGATION DE CONTRAINTES PREMIER PLAN-ARRIÈRE-PLAN
Abstract
(EN)
A method for propagating user-provided foreground-background constraint information for a first video frame to subsequent frames allows extraction of moving foreground objects with minimal user interaction. Video matting is performed wherein constraints derived from user input with respect to a first frame are propagated to subsequent frames using the estimated alpha matte of each frame. The matte of a frame is processed in order to arrive at a rough foreground-background segmentation which is then used for estimating the matte of the next frame. At each frame, the propagated constraints are used by an image matting method for estimating the corresponding matte which is in turn used for propagating the constraints to the next frame, and so on.
(FR)
L'invention porte sur un procédé de propagation d'informations de contraintes premier plan-arrière-plan fournies par l'utilisateur pour une première image vidéo à des images ultérieures, lequel procédé permet l'extraction d'objets de premier plan mobiles avec une interaction utilisateur minimale. Un détourage vidéo est effectué, des contraintes issues d'une entrée utilisateur par rapport à une première image étant propagées à des images ultérieures à l'aide du cache alpha estimé de chaque image. Le cache d'une image est traité afin d'arriver à une segmentation de premier plan-arrière-plan grossière, qui est ensuite utilisée pour estimer le cache de l'image suivante. Au niveau de chaque image, les contraintes propagées sont utilisées par un procédé de détourage d'image pour estimer le cache correspondant qui, à son tour, est utilisé pour propager les contraintes à l'image suivante, etc.
Latest bibliographic data on file with the International Bureau