Motion parallax9/28/2023 This technique is validated in additional experiments. This allows us to manipulate the disparity signal according to the strength of motion parallax to improve the overall depth reproduction. We demonstrate how this model can be applied in the context of stereo and multiscopic image processing, and propose new disparity manipulation techniques, which first quantify depth obtained from motion parallax, and then adjust binocular disparity information accordingly. Based on the measurements, we propose a joint disparity-parallax computational model that predicts apparent depth resulting from both cues. Motion parallax is a visual computation that amalgamates both self-motion from the observer and retinal image displacement to determine the distance to objects. To assess the strength of the effect we conduct psychovisual experiments that measure the influence of motion parallax on depth perception and relate it to the depth resulting from binocular disparity. We exploit the fact that in many practical scenarios, motion parallax provides sufficiently strong depth information that the presence of binocular depth cues can be reduced through aggressive disparity compression. We considered that the effects of triple-plane stimuli might be limited by a conflict between its motion parallax depth cue and a binocular disparity cue. In this work, we study the motion parallax cue, which is a relatively strong depth cue, and can be freely reproduced even on a 2D screen without any limits. For example, due to the low angular resolution of current automultiscopic screens, they can only reproduce a shallow depth range. However, in many scenarios, the range of depth that can be reproduced by this cue is greatly limited and typically fixed due to constraints imposed by displays. European Journal of Neuroscience, 37, 1103–1111.Starting from a stereoscopic video content with a static observer in a moving train (Left), our method detects regions where motion parallax acts as an additional depth cue (Center, white) and uses our model to redistribute the disparity depth budget from such regions (the countryside) to regions where it is more needed (the train interior) (Right).īinocular disparity is the main depth cue that makes stereoscopic images appear 3D. Motion parallax processing in pigeon ( Columba livia) pretectal neurons. A, Neuroethology, Sensory, Neural, and Behavioral Physiology, 187, 997–1007. Depth generalization from stereo to motion parallax in the owl. Object recognition in flight: How do bees distinguish between 3D shapes? PloS One, 11, e0147106. Motion Parallax in Psychology: Definition & Explanation John Paul Jones: Biography, Facts & Quotes The Battle of Lake Erie in 1813: Summary & Facts Annapolis Convention of 1786: Definition. Similarities between motion parallax and stereopsis in human depth perception. From this visual signal, the brain can calculate relative distances. In prior studies, constant information density was provided within the viewing angle by views. If you move your head from side to side, an object close to you will move more quickly across the retina than an object farther from you. A higher information density provides a higher spatial resolution with more fluidic motion parallax. Distance estimation in the hooded rat: Experimental evidence for the role of motion cues. How fast objects move across the retina provides a depth cue for the brain. Behavioral-analytical studies of the role of head movements in depth perception in insects, birds, and mammals. The role of image size and retinal motion in the computation of absolute distance by the Mongolian gerbil ( Meriones unguiculatus). This video demonstrates the movement different of a game background that doesnt use a parallax scroll effect, versus one that does. to detect and discriminate head-motion parallax depth cues is degraded by time delays between head movement and image update. Three experiments investigated whether motion parallax would allow observers to determine the distance of a floating object without intermediate contact. Distance estimation in the Mongolian gerbil: The role of dynamic depth cues. Figure 2.3a illustrates how motion parallax cues can influence distant perception. Infant Behavior & Development, 36, 238–244.Įllard, C. 34 reviews Abstract Want to stretch your imagination One good way is to try to imagine how far it is to a distant star. Motion parallax refers to relative motion of the images of object points at different distances that is caused by motion of the observer or by coherent motion. Motion parallax as a distance cue is particularly evident when the. Six-month-old infants use motion parallax to direct reaching in depth. Insect vision: Controlling actions through optic flow. Behavioral assessment of motion parallax and stereopsis as depth cues in rhesus monkeys.
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