Abstract
Artists can represent a 3D object by using only contours in a 2D drawing. Prior studies have shown that people can use such drawings to perceive 3D shapes reliably, but it is not clear how useful this kind of contour information actually is in a real dynamical scene in which people interact with objects. To address this issue, we developed an Augmented Reality (AR) device that can show a participant a contour-drawing or a grayscale-image of a real dynamical scene in an immersive manner. We compared the performance of people in a variety of run-of-the-mill tasks with both contour-drawings and grayscale-images under natural viewing conditions in three behavioral experiments. The results of these experiments showed that the people could perform almost equally well with both types of images. This contour information may be sufficient to provide the basis for our visual system to obtain much of the 3D information needed for successful visuomotor interactions in our everyday life.
Highlights
Artists can represent a 3D scene with 3D objects by using only contours in a 2D contour-drawing and people can recognize the scene and objects reliably from such drawings [1,2,3,4,5,6,7,8,9]
Prior studies that tested 3D perception from contour drawings have shown that people can obtain 3D information from the contour drawing, but it is not clear just how useful such contour information is in real dynamical 3D scenes in which ordinary objects are recognized and utilized under natural viewing conditions
We developed an Augmented Reality (AR) device that can show a participant both a contour-drawing and a grayscale-image of a real dynamical 3D scene in an immersive manner
Summary
Artists can represent a 3D scene with 3D objects by using only contours in a 2D contour-drawing and people can recognize the scene and objects reliably from such drawings [1,2,3,4,5,6,7,8,9]. Prior studies that tested 3D perception from contour drawings have shown that people can obtain 3D information from the contour drawing, but it is not clear just how useful such contour information is in real dynamical 3D scenes in which ordinary objects are recognized and utilized under natural viewing conditions. We developed an Augmented Reality (AR) device that can show a participant both a contour-drawing and a grayscale-image of a real dynamical 3D scene in an immersive manner (see [42,43,44] for earlier studies using AR devices to test the human visual system). Note that the two halves of the screen were seen binocularly but binocular depth cues (binocular disparity and vergence) could not be used to perceive the 3D scene These cues represented a frontoparallel plane but its effect on the immersive experience with the AR device seemed to be small [48]. This signal was used to signal the onset of a trial in the experiments
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