Color Grading of Cotton Part I: Spectral and Color Image Analysis

Abstract

Spectrometer measurements of the color of cotton based on CIE standards are investi gated and compared with high volume instrumentation (HVI) methods. Additionally, color imaging and spatial interpretation are examined with the intent of demonstrating the importance of color uniformity, trash content, and yellow spots on classer color grading. The result is that agreement between HVI color grading and the cotton classer can likely be enhanced by including the CIE color space redness parameter α*, trash content, and yellowness variability.