Image Quality

1998 - present

Image quality metrics are developed in order to objectively quantify how well the images are rendered. My current research is dealing with the issue of color fidelity. In the past, I studied color contouring, color consistency, and a few metrics designed to gauge the quality of digital halftoning. The challenge is to develop practically usable objective metrics that correlate sufficiently well with the subjective data from psychophysical experiments, while separating different components of image quality from each other to the extent possible, as different noise artifacts may mask each other or otherwise affect each other's perception, and other factors, such as lighting and surround, play their roles.

Publications

T. Bouk, E. N. Dalal, K. D. Donohue, S. Farnand, F. Gaykema, D. Gusev, A. Haley, P. L. Jeran, D. Kozak, W. C. Kress, Ó. Martinez, D. Mashtare, A. L. McCarthy, Y. S. Ng, D. R. Rasmussen, M. Robb, H. Shin, M. Q. Slickers, E. H. Barney-Smith, M. Tse, E. K. Zeise, S. Zoltner, Recent Progress in the Development of INCITS W1.1: Appearance-Based Image Quality Standards for Printers, Electronic Imaging 2007, San Jose, CA (Jan. 28 – Feb. 1, 2007).
S. Farnand, F. Gaykema, W. Kress, Ó. Martinez, A. McCarthy, H. Shin, E. Zeise, and D. Gusev, Update on the INCITS W1.1 Standard for Evaluating the Color Rendition of Printing Systems, Electronic Imaging 2006, San Jose, CA (Jan. 15-19, 2006).
S. Farnand, K. Töpfer, W. Kress, Ó. Martinez, A. McCarthy, H. Shin, E. Zeise, and D. Gusev, Update on the INCITS W1.1 Standard for Evaluating the Color Rendition of Printing Systems, Electronic Imaging 2005, San Jose, CA (Jan. 16-20, 2005), pp. 157-162.
R. Cookingham, S. Farnand, K. Töpfer, E. Dalal, A. McCarthy, W. Kress, Ó. Martinez, E. Zeise, and D. Gusev, Update on the INCITS W1.1 Standard for Evaluating the Color Rendition of Printing Systems, Electronic Imaging 2004, San Jose, CA (Jan. 18-22, 2004) pp. 55-59.
Chunghui Kuo, Yee Ng, and Dmitri A. Gusev, Perceptual Color Contouring Detection and Quality Evaluation Using Scanners, IS&T’s NIP19: 2003 International Conference on Digital Printing Technologies, New Orleans, LA (Sep. 28 – Oct. 3, 2003) pp. 581-585. Click here to access the abstract of this paper.
Dmitri A. Gusev, Digital Halftoning Algorithms for Medical Imaging, in: C. T. Leondes (Ed.), Computational Methods in Biophysics, Biomaterials, Biotechnology and Medical Systems, Vol. I: Algorithm Techniques, Kluwer Academic Publishers, Boston, MA (2003) pp. 127-191 (invited book chapter), Section 3.
Dmitri A. Gusev, Anti-Correlation Digital Halftoning, Ph.D. thesis, Computer Science Department, Indiana University, Bloomington (1999), Chapters 3, 5, 7.
Dmitri A. Gusev, Anti-Correlation Digital Halftoning by Generalized Russian Roulette, IS&T’s PICS ’99: The 53rd Annual Conference on Image Processing, Image Quality, Image Capture Systems, Savannah, GA (Apr. 25-28, 1999) pp. 327-332, Section 3.

Patent application

The following patent application on image analysis for image quality evaluation has been published at the Web site of the U.S. Patent and Trademark Office:

Yee S. Ng, Chung-Hui Kuo, Dmitri A. Gusev, Color Contour Detection and Correction, Application #20060072128 (Filed Sep. 27, 2004).

Projects

INCITS W1.1 Standard for Evaluating the Color Rendition of Printing Systems (May 2003 – present). Since May 2003, I have been a member of the INCITS W1.1 workgroup on color rendition. In 2006-2007, I served as the group leader.
Kodak NexPress 2100, 2100 Plus, 2500 and M700 digital color presses, NexGlosser glossing unit, and NexPress Intelligent Color solution for 5-color printing (Aug. 1999 – May 2007). Classified Pantone colors and supported Pantone licensing of the presses as a color expert. Analyzed and evaluated numerous halftone screening options, including those for the NexPress M700 digital color press launched in April 2007. Co-invented a method for color contouring detection using scanners. Studied and monitored page-to-page, run-to-run, and engine-to-engine color consistency.

Technical reports

I co-authored a technical report dealing with the subject in 2001, while working for NexPress Solutions. Prior to that, I wrote the following technical report with a section on image quality:

Dmitri A. Gusev, Anti-Correlation Digital Halftoning, TR No. 513, Computer Science Department, Indiana University, Bloomington, August 1998, Section 3.