A Psychophysical Experiment Evaluating the Color Accuracy of Several Multispectral Image Capture Techniques

A paired comparison psychophysical experiment was performed to evaluate the quality of several imaging techniques. Images rendered for an LCD were compared with two- and three-dimensional objects viewed in a multisource light booth. The test images were a combination of different spectral capture and image reconstruction techniques estimating spectral reflectance factor transformed into colorimetric images by imposing an illuminant and observer, in this case simulated daylight (6800K) and incandescent (2700K) for the 1931 CIE observer. Some images were also transformed directly to colorimetry. To compare the color accuracy with conventional RGB imaging, color-managed images from a typical consumer camera were included in the experiment. All image types captured using the research-grade camera performed very well, regardless of the illuminant, number of channels, or transformation method. A set of colorimetric images captured using previously optimized filters performed as well as the ...

• Type: Conference
• Year: 2003
• Where: PICS
• Authors: Ellen A. Day, Roy S. Berns, Lawrence A. Taplin, Francisco H. Imai
• Keywords: Colorimetric Images, Image Processing, Images, PICS 2003, Spectral Reflectance Factor