Psychometric Scaling: A Toolkit for Imaging Systems Development by Peter G. Engeldrum
201 pages, hardcover, Imcotek Press, ISBN 0967870607. List price $94.95 includes CD-ROM with MathCad®, V7.0, work sheets!
Image Quality: Seldom a "Front-Burner"
Activity
The market is not kind to products that do not perform properly.
Although one may debate which aspect of an imaging product's performance
is most important, virtually every list of performance attributes
will include image quality. In spite of how important image quality
is to a product's success, researching image quality and establishing
image quality targets is seldom given "front-burner"
attention.
Humans as Measurement Tools
One reason, of course, is that image quality cannot be directly
measured the way other performance aspects such as imaging speed
or compression ratios or MTF can be measured. To obtain print
and image quality appraisals, one must rely on human observers-using
methodologies and theoretical concepts that are foreign to many
"hard-science" product developers and R & D staffers.
We Don't See Dots Per Inch or Magapixels
The crux of the problem is that, while we may know, for instance,
an imaging system's addressability, customers do not see dots
per inch or megapixels. They see sharpness, jaggedness, or some
other related "ness." Psychometric Scaling: A Toolkit
for Imaging Systems Development shows how to include human observers
in image quality appraisal studies, and put image and print quality
evaluation programs on solid theoretical and methodological underpinnings.
Fully Worked Examples Included on CD-ROM
Psychometric Scaling: A Toolkit for Imaging Systems Development
is supported by sixteen fully worked MathCad® worksheets that
demonstrate the techniques with real data. Readers can use the
MathCad exercises as models for creating their own scaling studies,
or can plug their own study data into the work sheets to generate
their own scales.
Compete Against the Giants with the Tools
they Use
In addition to identifying the theoretical foundation for image
quality scaling studies and leading product development professionals
through step-by-step applications of the theory, Psychometric
Scaling: A Toolkit for Imaging Systems Development provides a
model for integrating scaling study findings into the product
design process in a meaningful way. The mechanism for linking
human input to the product development process is Imcotek's Image
Quality Circle, a development process in use by some of the most
successful companies in the imaging industry. The Image Quality
Circle is a process or framework which helps to understand, specify,
and manage the quality performance of imaging systems.
Author
The Author-Peter G. Engeldrum is an internationally renowned consultant
and educator in the fields of image quality and color science.
Engeldrum was adjunct faculty in the Center for Imaging Science
at the Rochester Institute of Technology, where he also received
BS and MS degrees.
Contents
Chapter 1 Image Quality and Psychometric Scaling
Chapter 2 The Image Quality Circle
Chapter 3 The Process of Scaling and Some Practical Hints
Chapter 4 Measurement Scales
Chapter 5 Thresholds and Just Noticeable Differences
Chapter 6 Ordinal Scaling
Chapter 7 Direct Interval Scaling
Chapter 8 Indirect Interval Scaling-Case V and Paired Comparison
Chapter 9 Indirect Interval Scaling-Generalization of Thurstone-CaseV
Chapter 10 Indirect Interval Scales-Category Scaling Methods
Chapter 11 Ratio Scaling
Chapter 12 Selecting the Best Method
Plus CD-ROM with sixteen MathCad® sheets for generating scales from your data.
Click on link to purchase a copy of Psychometric Scaling.
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