Jeff Pelz


A digital image display based system was designed and implemented to perform visual measurements of apparent modulation induced by the Cornsweet illusion. The system was used to examine the results reported on previous experiments designed to measure the modulation transfer function of the human visual system. The reported results of experiments performed by Dooley and Greenfield on induced modulation were examined, and data not reported in that work was collected on the range of modulations over which observers perceived linear images. The system developed has the flexibility to be adapted for many different types of experiments. Visual experiments involving human observers reported in the literature often required the construction of specialized, complex mechanical devices to collect data about the visual system. In contrast, the system described here can be easily adapted for a broad range of experiments . In addition to the Cornsweet perception study described, the system was configured to study an experiment performed by Lowry and DePalma involving the perception of Mach Bands.

Library of Congress Subject Headings

Visual perception--Data processing; Imaging systems

Publication Date


Document Type


Department, Program, or Center

School of Photographic Arts and Sciences (CIAS)


Brouwer, Willem

Advisor/Committee Member

Berns, Roy

Advisor/Committee Member

Schott, John


Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: QP481 .P44 1986


RIT – Main Campus