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EnglishDisclosed embodiments are directed to methods, systems, and circuits of generating compact descriptors for transmission over a communications network. A method according to one embodiment includes receiving an uncompressed descriptor, performing zero-thresholding on the uncompressed descriptor to generate a zero-threshold-delimited descriptor, quantizing the zero-threshold-delimited descriptor to generate a quantized descriptor, and coding the quantized descriptor to generate a compact descriptor for transmission over a communications network. The uncompressed and compact descriptors may be 3D descriptors, such as where the uncompressed descriptor is a SHOT descriptor. The operation of coding can be ZeroFlag coding, ExpGolomb coding, or Arithmetic coding, for example.
| Titolo: | Efficient compact descriptors in visual search systems |
| Inventore/i: | Pau, Danilo Pietro; Malaguti, Filippo; DI STEFANO, LUIGI; SALTI, SAMUELE; TOMBARI, FEDERICO |
| Inventore/i Unibo: | |
| Anno di deposito: | 2013 |
| Numero Brevetto: | 9131163 |
| Breve descrizione (Abstract): | Disclosed embodiments are directed to methods, systems, and circuits of generating compact descriptors for transmission over a communications network. A method according to one embodiment includes receiving an uncompressed descriptor, performing zero-thresholding on the uncompressed descriptor to generate a zero-threshold-delimited descriptor, quantizing the zero-threshold-delimited descriptor to generate a quantized descriptor, and coding the quantized descriptor to generate a compact descriptor for transmission over a communications network. The uncompressed and compact descriptors may be 3D descriptors, such as where the uncompressed descriptor is a SHOT descriptor. The operation of coding can be ZeroFlag coding, ExpGolomb coding, or Arithmetic coding, for example. |
| Data stato definitivo: | 17-lug-2016 |
| Appare nelle tipologie: | 6.01 Brevetto |
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