Teaching Stereo Viewing in the Classroom
Journal of Geoscience Education
I have developed a highly effective method of teaching stereo viewing based on simple exercises in the use and adjustment of the stereoscope and aerial photographs. The approach teaches students a procedure that avoids the often-frustrating experience of randomly moving the stereoscope and aerial photos until a stereo image is formed. Experience has shown that students should understand the fundamental principles of stereo vision and become proficient at making basic adjustments prior to viewing actual photographs. This is accomplished by having the students first practice with sets of dots drawn on plain paper to teach them two key adjustments. Using the dots and opening and closing one eye and then the other, the student is taught to a) correctly orient the stereoscope relative to the flight line and b) position the photos so that the distance between conjugate points always remains equal to the student's interpupillary distance. Only after mastering these adjustments, should actual photographs be used. Photos should be of high quality, with low- to medium-relief topography, and should not be pre-mounted in a lab manual or on a viewing table.
Reichard, James S..
"Teaching Stereo Viewing in the Classroom."
Journal of Geoscience Education, 44 (2): 129-133: Taylor & Francis Online.
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