Biologically inspired multichannel modelling of human visual perceptual system

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2005

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Apaydın, Mehmetcan

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Making a robot autonomous has been a common challenge to be overcome since the very beginning. To be an autonomous system, the robot should collect environmental data, interpret them, and act accordingly. In order to accomplish these, some resource management should be conducted. That is, the resources, which are time, and computation power in our case, should be allocated to more important areas. Existing researches and approaches, however, are not always human like. Indeed they don̕t give enough importance on this. Starting from this point of view, the system proposed in this thesis supplies the resource management trying to be more ̕human like̕. It directs the focus of attention to where higher resolution algorithms are really needed. This ̕real need̕ is determined by the visual features of the scene, and current importance levels (or weight values) of each of these features. As a further attempt, the proposed system is compared with human subjects̕ characteristics. With unbiased subjects, a set of parameters which resembles a normal human is obtained. Then, in order to see the effect of the guidance, the subjects are asked to concentrate on a single predetermined feature. Finally, an artificial neural network based learning mechanism is added to learn to mimic a single human or a group of humans. The system can be used as a preattentive stage module, or some more feature channels can be introduced for better performance in the future.

Subject Keywords

Electronics.

URI

http://etd.lib.metu.edu.tr/upload/12606772/index.pdf
https://hdl.handle.net/11511/15783

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. Apaydın, “Biologically inspired multichannel modelling of human visual perceptual system,” M.S. - Master of Science, Middle East Technical University, 2005.