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- W2110086022 abstract "In this paper we present two variant formulations of the well-known Histogram of Oriented Gradients (HOG) features and provide a comparison of these features on a large scale sign detection problem. The aim of this research is to find features capable of driving further improvements atop a preexisting detection framework used commercially to detect traffic signs on the scale of entire national road networks (1000's of kilometres of video). We assume the computationally efficient framework of a cascade of boosted weak classifiers. Rather than comparing features on the general problem of detection we compare their merits in the final stages of a cascaded detection problem where a feature's ability to reduce error is valued more highly than computational efficiency. Results show the benefit of the two new features on a New Zealand speed sign detection problem. We also note the importance of using non-sign training and validation instances taken from the same video data that contains the training and validation positives. This is attributed to the potential for the more powerful HOG features to overfit on specific local patterns which may be present in alternative video data." @default.
- W2110086022 created "2016-06-24" @default.
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- W2110086022 date "2011-06-01" @default.
- W2110086022 modified "2023-09-25" @default.
- W2110086022 title "Large scale sign detection using HOG feature variants" @default.
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- W2110086022 doi "https://doi.org/10.1109/ivs.2011.5940549" @default.
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