SPECTROPHOTOMETRIC COLOR MATCHING WITH THE LEAST SQUARES TECHNIQUE

COMPUTER-ORIENTED COLOR MATCHING IS A RECENTLY DEVELOPED TECHNIQUE WHICH CONCERNS: (1) SELECTION OF COLORANTS FOR A PROPOSED MATCH, (2) CALCULATION OF COLORANT COMBINATION RECIPES FOR A MATCH, AND (3) CORRECTION OF INITIAL COLORANT FORMULATIONS TO OBTAIN A MORE EXACTING MATCH. IN SPECTROPHOTOMETRIC COLOR MATCHING, THE SPECTROPHOTOMETRIC CURVE (EITHER REFLECTANCE OR TRANSMITTANCE) OF A STANDARD TO BE MATCHED IS REPRODUCED BY SUITABLY COMBINING THE CURVES OF THE COLORANTS TO BE USED IN MAKING THE MATCH. THE APPLICABILITY OF THE LEAST SQUARES TECHNIQUE WAS DEMONSTRATED FOR COLORANT SELECTION AND COMBINATION CALCULATIONS IN SPECTROPHOTOMETRIC COLOR MATCHING. THE NECESSARY COMPUTATIONS ARE IDEALLY SUITED TO DIGITAL COMPUTERS AND CAN BE IMPLEMENTED WITH EXISTING GENERAL PURPOSE MULTIPLE LINEAR REGRESSION COMPUTER PROGRAMS. THE NATURE OF THE LEAST SQUARES METHOD IS SUCH THAT SELECTION AND COMBINATION CALCULATIONS ARE CARRIED OUT SIMULTANEOUSLY FOR ALL COLORANTS CONSIDERED FOR USE IN MATCHING A STANDARD.

• Supplemental Notes:
  • Vol 5, No 6, PP 22-27, 11 FIG, 4 TAB, 9 REF
• Authors:
  • Mcginnis, P H
• Publication Date: 1967-11

Media Info

• Serial:
  • Color Engineering

Subject/Index Terms

• TRT Terms: Color; Digital computers; Least squares method; Linear regression analysis; Spectrophotometers; Standards
• Uncontrolled Terms: Matching; Selecting
• Old TRIS Terms: Coloring
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216272
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 18 1994 12:00AM