Identifying visual contextual synonyms
First Claim
Patent Images
1. A method comprising:
- receiving an image;
defining a region of visual context in the image;
partitioning the region of visual context into sectors;
producing a sub-histogram for each sector, wherein the sub-histograms represent which of the sectors contain which of one or more local interest points in the region of visual context;
concatenating the sub-histograms produced for each sector to generate a histogram describing a contextual distribution of the region of visual context; and
storing the histogram describing the contextual distribution of the region of visual context.
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Abstract
Tools and techniques for identifying visual contextual synonyms are described herein. The described operations use visual words having similar contextual distributions as contextual synonyms to identify and describe visual objects that share semantic meaning. The contextual distribution of a visual word is described using the statistics of co-occurrence and spatial information averaged over image patches that share the visual word. In various implementations, the techniques are employed to construct a visual contextual synonym dictionary for a large visual vocabulary. In various implementations, the visual contextual synonym dictionary narrows the semantic gap for large-scale visual search.
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Citations
20 Claims
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1. A method comprising:
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receiving an image; defining a region of visual context in the image; partitioning the region of visual context into sectors; producing a sub-histogram for each sector, wherein the sub-histograms represent which of the sectors contain which of one or more local interest points in the region of visual context; concatenating the sub-histograms produced for each sector to generate a histogram describing a contextual distribution of the region of visual context; and storing the histogram describing the contextual distribution of the region of visual context. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computer-readable storage medium having computer-executable instructions recorded thereon, the computer-executable instructions to configure a computer to perform operations comprising:
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obtaining an image; defining a region of visual context in the image; identifying one or more local interest points in the region of visual context; partitioning the region of visual context into sectors; producing a sub-histogram for each sector, wherein the sub-histograms represent which of the sectors contain which of the one or more local interest points; concatenating the sub-histograms produced for each sector to generate a histogram describing a contextual distribution of the region of visual context; and storing the histogram describing the contextual distribution of the region of visual context. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A system comprising:
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a processor; a memory coupled to the processor, the memory storing components for identifying visual contextual synonyms, the components configured to perform operations comprising; obtaining an image; defining a region of visual context in the image; identifying one or more local interest points in the region of visual context; partitioning the region of visual context into sectors; producing a sub-histogram for each sector, wherein the sub-histograms represent which of the sectors contain which of the one or more local interest points; and concatenating the sub-histograms produced for each sector to generate a histogram describing a contextual distribution of the region of visual context. - View Dependent Claims (19, 20)
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Specification