Appendix II

Camera Overview

The camera used for image capture in this project was the Nikon D70, on loan from the Stanford Electrical Engineering department. The Nikon D70 is a digital Single Lens Reflex (SLR) camera first introduced in January 2004.  It contains 6.1 million CCD pixels and thankfully allows access to the ‘raw’ pixel data in addition to the typical compressed outputs.  The RAW images were used exclusively for analysis in ISET.

The RAW data files save the intensity values for each of the four RGBG channels in the 1007 by 1520 pixel array. The storage of these values without excessive processing or compression allows for further manipulation by ISET or other color balancing algorithms.

The response of this camera was also simulated in MATLAB utilizing the characterization information obtained from a previous year’s project. For a detailed description of how this data was collected, please visit their project website at: <http://ise.stanford.edu/class/psych221/projects/05/joanmoh/index.html>.