Citation

Ghanem S, Holliman JH. J. Imaging 2024; 10(7).

Copyright

(Copyright © 2024, MDPI: Multidisciplinary Digital Publications Institute)

DOI

10.3390/jimaging10070155

PMID

39057726

PMCID

PMC11277794

Abstract

In this study, we analyze both linear and nonlinear color mappings by training on versions of a curated dataset collected in a controlled campus environment. We experiment with color space and color resolution to assess model performance in vehicle recognition tasks. Color encodings can be designed in principle to highlight certain vehicle characteristics or compensate for lighting differences when assessing potential matches to previously encountered objects. The dataset used in this work includes imagery gathered under diverse environmental conditions, including daytime and nighttime lighting. Experimental results inform expectations for possible improvements with automatic color space selection through feature learning. Moreover, we find there is only a gradual decrease in model performance with degraded color resolution, which suggests the need for simplified data collection and processing. By focusing on the most critical features, we could see improved model generalization and robustness, as the model becomes less prone to overfitting to noise or irrelevant details in the data. Such a reduction in resolution will lower computational complexity, leading to quicker training and inference times.

Language: en

Keywords

machine learning; color space; optimization; surveillance systems; traffic monitoring; vehicle recognition