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| Content Provider | IEEE Xplore Digital Library | 
|---|---|
| Author | Servetto, S. Ramchandran, K. Huang, T.S. | 
| Copyright Year | 1997 | 
| Description | Author affiliation: Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA (Servetto, S.) | 
| Abstract | Content based retrieval of image and video data from databases is a very challenging problem, whose interest is derived from the need of future databases to support efficient access to vast amounts of visual information. Typical queries to be performed in this context check attributes of objects present in image data, such as shape, color, relative locations, etc. Therefore, the way in which image data is represented plays a fundamental role in the efficient implementation of those queries. One possibility is to take the naive approach of storing images using standard compression techniques, storing image features (such as object shape descriptors, color histograms, etc.) as explicit side information, and whenever an image is involved in the evaluation of a query decoding it to full resolution; however, many more efficient techniques (in terms of storage and computational requirements) are possible. We propose a new image coding technique which combines a wavelet image representation, embedded coding of the wavelet coefficients, and segmentation of semantically meaningful objects in the wavelet domain, to generate a bitstream in which each object is encoded independently of every other object in the image, and without explicitly storing shape boundary information. Furthermore, since the representation of each object is fully embedded, applications may, independently for each object, specify the desired target bitrate and retrieve bits from the compressed bitstream. | 
| Starting Page | 325 | 
| Ending Page | 330 | 
| File Size | 511206 | 
| Page Count | 6 | 
| File Format | |
| ISBN | 0780337808 | 
| DOI | 10.1109/MMSP.1997.602656 | 
| Language | English | 
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Publisher Date | 1997-06-23 | 
| Publisher Place | USA | 
| Access Restriction | Subscribed | 
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Subject Keyword | Image coding Shape Image databases Visual databases Image storage Wavelet domain Information retrieval Image retrieval Content based retrieval Histograms | 
| Content Type | Text | 
| Resource Type | Article | 
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