LED lighting based multispectral imaging system for color measurement

US10161796B1 · kind B1 · utility

Assignee

• Wenzhou University · CN

Inventors

• Guihua Cui · Wenzhou, CN
• Xiukai Ruan · Wenzhou, CN
• Qibo Cai · Wenzhou, CN
• Yanhua Tan · 流花街道, CN
• Wenbin Xie · Beijing, CN
• Jinjin Chu · Wenzhou, CN
• Yaowu Liu · Wenzhou, CN
• Ting Xu · Richmond, US
• Yaoju Zhang · Wenzhou, CN
• Haiyong Zhu · Wenzhou, CN
• Yuxing Dai · Wenzhou, CN

Key dates

• Filing date: Jun 22, 2018
• Grant date: Dec 25, 2018
• Expiry date: Jun 22, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B20/40
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An LED lighting based multispectral imaging system for color measurement is provided, including a main control computer and an enclosed type lamp box, where a digital camera is provided at the top of the lamp box, and an LED lamp set control apparatus, a drawer type bearing platform, and an LED lamp set are provided at the bottom of the lamp box. A to-be-measured object is placed on the drawer type bearing platform. The main control computer controls spectral power distribution of the LED lamp set to be in a reciprocal relationship with a spectral sensitivity curve of the digital camera and extracts a camera response and performs calculation, to obtain spectral reflectivity of each pixel of the to-be-measured object.