Tuning of grayscale computer vision systems

0560958 - ÚBO 2023 RIV NL eng J - Journal Article
Škrabánek, P. - Martínková, Natália
Tuning of grayscale computer vision systems.
Displays. Roč. 74, September (2022), č. článku 102286. ISSN 0141-9382. E-ISSN 1872-7387
R&D Projects: GA ČR(CZ) GA17-20286S
Institutional support: RVO:68081766
Keywords : Computer vision * Parameter optimization * Performance evaluation * WECIA graph * Weighted means grayscale conversion
OECD category: Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Impact factor: 4.3, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0141938222001044?via%3Dihub

Computer vision systems perform based on their design and parameter setting. In computer vision systems that use grayscale conversion, the conversion of RGB images to a grayscale format influences performance of the systems in terms of both results quality and computational costs. Appropriate setting of the weights for the weighted means grayscale conversion, co-estimated with other parameters used in the computer vision system, helps to approach the desired performance of a system or its subsystem at the cost of a negligible or no increase in its time-complexity. However, parameter space of the system and subsystem as extended by the grayscale conversion weights can contain substandard settings. These settings show strong sensitivity of the system and subsystem to small changes in the distribution of data in a color space of the processed images. We developed a methodology for Tuning of the Grayscale computer Vision systems (TGV) that exploits the advantages while compensating for the disadvantages of the weighted means grayscale conversion. We show that the TGV tuning improves computer vision system performance by up to 16% in the tested case studies. The methodology provides a universally applicable solution that merges the utility of a fine-tuned computer vision system with the robustness of its performance against variable input data.
Permanent Link: https://hdl.handle.net/11104/0333727