Robust and Efficient Recognition of Low Quality Images by Increasing Reference Feature Vectors
| Language | Japanese |
|---|---|
| Type | Journal Articles |
| Authors | Koichi KISE, Kazuto NOGUCHI, Masakazu IWAMURA |
| Title | Robust and Efficient Recognition of Low Quality Images by Increasing Reference Feature Vectors |
| Journal | Trans. IEICE |
| Vol. | J93-D |
| No. | 8 |
| Pages | pp.1353-1363 |
| Reviewed | Reviewed |
| Date | August 2010 |
| Research fields | Object Recognition |
| URL | http://search.ieice.org/bin/summary.php?id=j93-d_8_1353 |
| Key | Kise2010_IEICE (id=1151) |
Abstract
This paper concerns specific object recognition based on local features. In general, increasing the number of local features for indexing (reference feature vectors) by generative learning enables us to improve the recognition rate. In this paper, we show that generative learning is also effective for shorten the processing time. This paradoxical effect (i.e., shorter time with more reference feature vectors) is achieved by cascading recognizers. Generated local features allow us to terminate the recognition process earlier. In other words, generative learning is effective to reduce the search space for finding nearest neighbors. From the experimental results using 10,000 reference images, 6.6 times reference feature vectors enabled us both to reduce the processing time to 2/3 from the original, and to improve the recognition rate by 12.2\%. Another experiment with 1 million reference images indexed by 2.6 billion reference feature vectors yielded the recognition rate of 90\% in 59ms/query.
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