| Technique
| Dominant Color
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| Document
| MPEG-7 Visual (ISO/IEC 15938-3)
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| Name
| Jungmin Song, Heon Jun Kim, Leszek Cieplinski, Prof. Manjunath
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| EMail
| jmsong73@mail.lgcit.com, hjk@lge.co.kr, Leszek.Cieplinski@vil.ite.mee.com, manj@ece.ucsb.edu
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| Contact
| Jungmin Song(general), Leszek Cieplinski(color variance), Prof. Manjunath(dominant color extraction and search algorithm)
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| Type
| application
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| External Libraries
| none
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| Related Ds/DSs
| Color Space Descriptor, Color Quantization Descriptor, Related DS's are not defined fully yet.
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| Used Ds/DSs
| Color Space Descriptor, Color Quantization Descriptor
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| Input
| Images
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| Extraction
| Yes
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| Client Appl
| Search, Retrieval, Browsing
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| Summary
| The dominant color descriptor is useful for image and video retrieval. It targets content-based retrieval for color, either for the whole image or for any arbitrary shaped region (rectangular or irregular). It is a very compact descriptor, requiring less than 6-8 colors per region. Since colors are not pre-quantized as in the histogram type color descriptors, the representation is more accurate. To accomplish high accuracy in retrieval, Spatial Coherency and/or Color Variance can be utilized. It is intended for applications that use object based representations (objects or regions in an image).
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| Limitations
| The maximum allowed number of dominant colors is 8.
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| Known Problems
| None.
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| Parameters
| color space and color quantization parameters
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