Diamond color measurement instrument based on image processing

H. Takahashi; S. Mandal; M. Toosi; J. Zeng; W. Wang

doi:10.1117/12.2235801

14 September 2016 Diamond color measurement instrument based on image processing

H. Takahashi, S. Mandal, M. Toosi, J. Zeng, W. Wang

Proceedings Volume 9970, Optics and Photonics for Information Processing X; 997015 (2016) https://doi.org/10.1117/12.2235801
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

Gemological Institute of America (GIA) has developed a diamond color measurement instrument that can provide accurate and reproducible color measurement results. The instrument uses uniform illumination by a daylight-approximating light source; observations from a high-resolution color-camera with nearly zero-distortion bi-telecentric lens, and image processing to calculate color parameters of diamonds. Experiments show the instrument can provide reproducible color measurement results and also identify subtle color differences in diamonds with high sensitivity. The experimental setup of the prototype instrument and the image processing method for calculating diamond color parameters are presented in this report.

Citation Download Citation

H. Takahashi, S. Mandal, M. Toosi, J. Zeng, and W. Wang "Diamond color measurement instrument based on image processing", Proc. SPIE 9970, Optics and Photonics for Information Processing X, 997015 (14 September 2016); https://doi.org/10.1117/12.2235801

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available