Method for recognizing a visual context of an image and corresponding device
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsAymen Shabou, Herve Le Borgne
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Abstract
A method for recognizing a visual context in an image includes at least one step of extracting features from the image and including at least one step of coding the plurality of local descriptors developing a coding matrix by associating each local descriptor with one or a plurality of visual words in a codebook according to at least one similarity criterion, the method being characterized in that said coding step results from a compromise between the similarity between a given local descriptor and the visual words of a codebook and its resemblance to the visual words associated with the local descriptors which are spatially near to it in the domain of the image.
Claims11
A method for recognizing a visual context in an image forming part of a domain, including at least one step of extracting features from the image and including at least:
- a step of extracting a plurality of local descriptors for a plurality of sites of the image,
- a step of coding the plurality of local descriptors developing a coding matrix by associating each local descriptor with one or a plurality of visual words of a codebook according to at least one similarity criterion,
- an aggregation step forming a unique signature from the coding matrix,
- wherein said association developed during said coding step is further performed according to the similarity between each local descriptor and the visual words of the codebook associated with at least one spatially near local descriptor, in the domain of the image, of each local descriptor considered.
Dependencies are inferred from the claim text.