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Distinct Two Part Objects

(.zip archive) This image set was created by Will Hayward using Strata StudioPro and contains 5 objects composed of 2 parts per an object - all 10 parts are qualitatively different from one another. Objects appear in 9 viewpoints separated by 10 deg increments (the 0 deg viewpoint is straight on and the 90 deg viewpoint is a profile view). No views are near mirror reflections of other views. Both parts are visible from every viewpoint. As such, these objects fulfill Biederman and Gerhardstein's conditions for viewpoint invariance (we actually found viewpoint dependence). See Hayward and Tarr's (1997) JEP:HPP article for sequential matching and naming experiments that use these objects and more on this topic.

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