The Invariance Properties of Chromatic Characteristics

Autor:	Yun-Chung Chung, Sei-Wang Chen, Shyang-Lih Chang, Shen Cherng
Rok vydání:	2006
Předmět:	Scene analysis Mathematics::Combinatorics Degree (graph theory) business.industry Image processing Luminance Image (mathematics) Ambient calculus Computer vision Artificial intelligence Chromatic scale business Constant (mathematics) Mathematics
Zdroj:	Advances in Image and Video Technology ISBN: 9783540682974 PSIVT
Popis:	An approach to analyzing the degrees of invariance of chromatic characteristics is proposed in this paper. In many vision applications, it is desirable that the chromatic characteristics of objects in images taken under different lighting conditions could remain constant. However, the invariance properties of chromatic characteristics are subject to the lighting conditions. In order to be able to apply to dynamic scenes, we consider three fundamental lighting sources: diffuse, ambient, and directed lightings. Any illumination condition can be approximated as a combination of the three lighting sources. The proposed degree of chromatic invariance is defined based on the chromatic characteristic behaviors under different illumination conditions. A lot of image samples under different illumination conditions are utilized, and from experimental results, we conclude that chromatic characteristics {H, C, Cλ} are most stable and suitable for the vision applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::87f18a8db374398558e001f0185ac948 https://doi.org/10.1007/11949534_13 Zobrazit plný text záznamu