METHOD OF DETERMINATION OF STABLE ZONES WITHIN AN IMAGE STREAM, AND PORTABLE DEVICE FOR IMPLEMENTING THE METHOD
First Claim
1. A method of analyzing a stream of images acquired with a camera, at least a part of the images of said stream of images comprising a representation of an object, characterized in that the method comprises determining at least one area in a current image of said stream of images, the at least one area having visual similarity with areas of a plurality of other images different from the current image in said stream, wherein said plurality of other images are selected among images of said stream with different picture conditions, said at least one area identifying the object.
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Abstract
The invention concerns a method for determining zones in images captured by the camera embedded in a handheld mobile device. An object in front of the camera is captured and a stream of images captured by said camera is generated, said object appearing in the visual content of said images stream. The method comprises a step of analysis the visual content of the image stream and a step of determining at least one zone in each analyzed image, the zone said “stable” having visual similarity with a zone in each or most of the other images in the stream, said stable zone identifying the object taken by the mobile device. In this manner, the number of zone identifying the object decreases and the matching between a query image and images read from databases is quicker. Moreover, the processing and storage complexity of the index system is more efficient, as well as the geometric verification performed during the matching of images.
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Citations
16 Claims
- 1. A method of analyzing a stream of images acquired with a camera, at least a part of the images of said stream of images comprising a representation of an object, characterized in that the method comprises determining at least one area in a current image of said stream of images, the at least one area having visual similarity with areas of a plurality of other images different from the current image in said stream, wherein said plurality of other images are selected among images of said stream with different picture conditions, said at least one area identifying the object.
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11. (canceled)
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13. A device comprising a processor, a memory configured to store a software program, and a camera configured to acquire a stream of images, at least a part of the images of said stream comprising a representation of an object, the processor being configured to determine at least one area in a current image of said stream of images, the at least one area having visual similarity with areas of a plurality of other images different from the current image in said stream, wherein said plurality of other images are selected among images of said stream with different picture conditions, said at least one area identifying the object.
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14. A server device comprising a processor, a memory configured to store a software program, the server device further comprising a network interface configured to receive through a network a stream of images, at least a part of the images of said stream comprising a representation of an object, the processor being configured to determine at least one area in a current image of said stream of images, the at least one area having visual similarity with areas of a plurality of other images different from the current image in said stream, wherein said plurality of other images are selected among images of said stream with different picture conditions, said at least one area identifying the object.
Specification