Metodologia para detecção rápida de movimento em sequências de imagens / Motion fast detection methodology in image sequences

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

Algorithms for motion detection in image sequences must satisfy the following requirements: accuracy, robustness and speed. The way that accuracy, robustness and speed are combined depends on the algorithm development and on the application. In this work, it has investigated motion detection techniques that satisfy the mentioned requirements. The Optical Flow technique was chosen for the motion detection due to its good performance in the results. As the Optical Flow requires intensive computational load, we propose in this thesis a methodology where Optical Flow Equations are applied in specific areas of the processed image. These areas were selected using pre-processing techniques that identify regions of image with larger motion probability. After the motion areas identification, Optical Flow Equations are applied to the regions of interest. To assess and validate the proposed method, the needle diagrams obtained in the reduced areas are compared with the ones obtained from the whole image according to statistical criteria and processing time. The proposed algorithms have been tested in synthetic and real images.

ASSUNTO(S)

motion detection sequência de imagens optical flow detecção de movimento fluxo ótico image sequences

ACESSO AO ARTIGO

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