Analysis of Speed Sign Classification Algorithms Using Shape Based Segmentation of Binary Images

Abstract

Abstract. Traffic Sign Recognition is a widely studied problem and its dynamic nature calls for the application of a broad range of preprocessing, segmentation, and recognition techniques but few databases are available for evaluation. We have produced a database consisting of 1,300 images captured by a video camera. On this database we have conducted a systematic experimental study. We used four different preprocessing techniques and designed a generic speed sign segmentation algorithm. Then we selected a range of contemporary speed sign classification algorithms using shape based segmented binary images for training and evaluated their results using four metrics, including accuracy and processing speed. The results indicate that Naive Bayes and Random Forest seem particularly well suited for this recognition task. Moreover, we show that two specific preprocessing techniques appear to provide a better basis for concept learning than the others.

Classificação de Sinais de Trânsito Usando Otimização por Colmeias e Random Forest

“…Em [23], foram coletadas 1300 imagens de placas de trânsito usando uma câmera com resolução 640x480 para cada imagem. Primeiramente, as imagens foram convertidas de coloridas para uma escala de cinza.…”