Professor Ralph Jacobson

Consultant and Emeritus Professor of Imaging Science, University of Westminster, Editorial Board, The Imaging Science Journal

Research Interests and related activities

Current research interests are concerned with physical and psychophysical techniques as a means of quantifying and modelling image quality which include the reproduction of colour, other non-colour attributes of image quality, and the optimisation of image capture conditions in applications of imaging systems. Recent emphasis has become focused on image quality quantifications of digital and electronic imaging systems. Recent successful projects which have been undertaken, include: the effect of image compression on image quality, image quality of displays, digitising and archiving of photographic collections, image quality and artefacts in digital cameras, measurements of MTFs of components in imaging chains, life expectancy of hard copy output, and enhancing image contrast for image capture.

Professor Jacobson carries out consultancy for a number of imaging companies and educational institutions. He is the author, co-author or contributor to eleven books and more than 120  papers in the imaging field. He has successfully supervised twenty postgraduate  research students. He introduced the MSc in Digital and Photographic Imaging at the University of Westminster in 1996 and founded the Imaging Technology Research Group, which now forms part of CVIT and was its Director  from 1992 to 2002.

Recent publications

J.Y.Park, S.Triantaphillidou S. and R.E.Jacobson . Just noticeable differences in perceived
image contrast with changes in displayed image size, Proc. IS&T/SPIE Electronic Imaging:
Image Quality & System Performance XI, V.9016, 8621oB (2014).

E. Allen, S.Triantaphillidou S. and R.E. Jacobson R.E. Perceptibility and acceptability of
JPEG 2000 compressed images of various scene types, Proc. IS&T/SPIE Electronic Imaging:
Image Quality & System Performance XI, V.9016, 90160W. (2014).

J.Y.Park, S. Triantaphillidou, R. E. Jacobson and G. Gupta; Evaluation of perceived image
sharpness with changes in the displayed image size. Proc. SPIE 8293, Image Quality and
System Performance IX, 82930J (January 24, 2012).

K.H.Oh, , S. Triantaphillidou, and R. E. Jacobson. Device-dependent scene-dependent quality
predictions using effective pictorial information capacity. Society of Photo-Optical
Instrumentation Engineers (SPIE) Conference Series. Vol. 7867. 2011.

K. H. Oh , S. Triantaphillidou, R. E. Jacobson, Scene classification with respect to image
quality measurements. Proc. SPIE 7529, Image Quality and System Performance VII, 752908
(January 18, 2010).


Doctoral research projects

Find out about the projects and Phd students are working on


Details of the text books, journals and research book we have worked on.