Expanding the horizontal capabilities of CRT monitors using artificial inter-pixel steps for neuroscience experiments
| Autor: | Nelson Fernandes, Lirio Onofre Baptista de Almeida, Jan Frans Willem Slaets, Paulo Matias, Mario Gazziro |
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| Rok vydání: | 2012 |
| Předmět: |
Novel technique
Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Image pattern Artificial Intelligence Computer graphics (images) Computer vision Electrical and Electronic Engineering Field-programmable gate array Digital signal processing Pixel business.industry Applied Mathematics computer.file_format Frame rate Visualization MOSCAS (EXPERIMENTOS) Computational Theory and Mathematics Signal Processing Computer Vision and Pattern Recognition Artificial intelligence Statistics Probability and Uncertainty Raster graphics business computer Neuroscience |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | This article describes the development of a visual stimulus generator to be used in neuroscience experiments with invertebrates such as flies. The experiment consists in the visualization of a fixed image that is displaced horizontally according to the stimulus data. The system is capable of displaying 640x480 pixels with 256 intensity levels at 200 frames per second (FPS) on conventional raster monitors. To double the possible horizontal positioning possibilities from 640 to 1280, a novel technique is presented introducing artificial inter-pixel steps. The implementation consists in using two video frame buffers containing each a distinct view of the desired image pattern. This implementation generates a visual effect capable of doubling the horizontal positioning capabilities of the visual stimulus generator allowing more precise and movements more contiguous. |
| Databáze: | OpenAIRE |
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