Table 3.
System Gaps Compared Across CBIR Systems. (See reference [4] for complete explanation of terms. A few of the most significant are given here.) Semantic/Manual: some semantic labeling of image content; Use Context/Narrow: one or small number of image modalities; Scale/Single: no multiscale processing; Query/Composition: pre-stored shapes or patterns are used; Query/Sketch: interactive user sketch; Feedback/Basic: only similarity or dissimilarity to single query image is provided; Feedback/Advanced: measure of match to weighted image set is provided; Refinement/Complete Combination: complete query history in session is maintained and queries may be combined
| CervigramFinder | SPIRS | IRMA | SPIRS-IRMA | ||
|---|---|---|---|---|---|
| Content | Semantic | Manual | Manual | Not addressed | Not addressed |
| Use Context | Narrow | Narrow | Narrow | Narrow | |
| Feature | Extraction | Computer-assisted | Computer-assisted | Automatic | Computer-assisted |
| Structure | Local | Local | Global | Local | |
| Scale | Single | Single | Single | Single | |
| Space+Time Dimension |
Not applicable | Not applicable | Not applicable | Not applicable | |
| Channel Dimension |
Not applicable | Not applicable | Not applicable | Not applicable | |
| Performance | Application | Online | Online | Online | Online |
| Integration | Not addressed | Not addressed | Not addressed | Not addressed | |
| Indexing | Not addressed | Software supported (K-D Tree) |
Not addressed | Software sup- ported (K-D Tree) |
|
| Evaluation | Qualitative—900 cervigrams |
Qualitative—4,514 vertebrae x-rays |
Qualitative— 10,000 radio- graphs |
Qualitative— 4,514 vertebrae x-rays |
|
| Usability | Query | Hybrid (Composi- tion, Sketch) |
Hybrid (Composi- tion, Sketch) |
Pattern | Composition |
| Feedback | Not addressed | Basic | Advanced | Advanced | |
| Refinement | Not addressed | Not addressed | Complete Combi- nation |
Complete Combi- nation |
|