Self-Referencing Method for Relative Color Intensity Analysis Using Mobile-Phone

• 作者: Dalton P. de Santana Gabrielli M. F. de Oliveira Marcos A. S. de Oliveira Renato E. de Araujo Wellington S. Souza
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: SPECTROMETRY COLORIMETRY Mobile-Phone
• 年，卷（期）: 2018,（7）
• 页码范围: 264-275
• 页数: 12页
• 分类号: R73

摘要

Mobile-phones have been widely explored on colorimetric evaluations. However, their use with different built-in image systems and acquisition configuration, in an environment with non-controlled illumination, limits the establishment of an accurate color analysis. To overcome this restriction, the determination of the absolute color of an object can be overlooked and a relative color value determined. In this work, we establish a new approach for spectroscopic evaluation based on cell-phone imaging, with no previous calibration, determining relative color values. The standalone relative color intensity method is evaluated under the use of four distinct mobile-phones and different illumination conditions. The capability to distinguish different color shades exploring the proposed self-referenced relative color intensity technique is appraised. Moreover, the potential use of the method is demonstrated by evaluating the chemical-adsorption process of Cysteamine molecules on gold nanoparticle surfaces. The proposed self-referenced technique can improve and expand the use of mobile-phones in spectroscopic applications.