![]() Robust monocular depth perception can also be attained from motion parallax, the image motion induced by translational self-motion 6, 7, 8. Stereoscopic depth perception relies on slight differences between the retinal images projected onto the two eyes, known as binocular disparity 4, 5. The visual system has evolved multiple mechanisms to judge the depth of objects in a 3D scene 1, 2, 3. To make sense of the 3D structure of the visual scene, the brain must also accurately infer the depths of moving objects. Many situations, some critical to an animal’s survival such as hunting prey, require the brain to correctly identify moving objects in a three-dimensional (3D) scene during self-motion. Our findings establish that scene-relative object motion can confound perceptual judgements of depth during self-motion. ![]() These biases were large when the object was viewed monocularly, and were greatly reduced, but not eliminated, when binocular disparity cues were provided. This pattern of biases is expected if subjects confound image motion due to self-motion with that due to scene-relative object motion. Subjects showed a far bias when object and observer moved in the same direction, and a near bias when object and observer moved in opposite directions. A target object could be either stationary or moving laterally at different velocities, and subjects were asked to judge the depth of the object relative to the plane of fixation. Naïve human subjects viewed a virtual 3D scene consisting of a ground plane and stationary background objects, while lateral self-motion was simulated by optic flow. Thus, it is unknown whether perceived depth based on motion parallax is biased by object motion relative to the scene. Previous experimental and theoretical work on perception of depth from motion parallax has assumed that objects are stationary in the world. To correctly compute depth from motion parallax, only the component of image motion caused by self-motion should be used by the brain. However, if an object moves relative to the scene, this complicates the computation of depth from motion parallax since there will be an additional component of image motion related to scene-relative object motion. During observer translation, the relative image motion of stationary objects at different distances (motion parallax) provides potent depth information. It’s not a diss at 4K to state that home media is often more popular than the attitudes of these studios would suggest.An important function of the visual system is to represent 3D scene structure from a sequence of 2D images projected onto the retinae. Even with the hardware being harder and harder to get, 3D retains a dedicated and passionate fanbase. A lot of these companies could sell their 3D movies MOD and make a profit but they’ve moved onto the next thing. Technically 4K sales are often a rounding error for some of these giga corporations but they put them out because profit is profit, and keeping movie enthusiasts happy is good business. The market isn’t enormous but there’s a dedicated if niche fanbase, and no company should be turning its nose up at profit. 3D movies still sell premium seats in cinemas which is why they keep making them. All physical media is worth championing.ģD died off this time in large part because the home tech for it when it was ‘mainstream’ sucked and was fiddly and inaccessible to the average Joe. My only point is that 3D is much more popular than most people think and you’re saying ‘4K is popular’. I’m really not even sure what your point is. The top 5 3D titles are old titles on a format that basically doesn’t have any new releases? You don’t say! (Robot Monster and Avatar: WOW.)Ī 3D movie shot in 3D is popular in 3D? You don’t say! Industries don’t remove something that is making significant money.īefore I get accused of being a 3D hater, I spent £50 on the format in the last week alone. The supposed popularity of 3D is an illusion. The top 5 3D sales regularly consist of old titles that don’t even crack 1% of share. The fact of the matter is that 4K sees a share of around 20% of all disc sales when we have heavy blockbuster months, which at a £10 mark up, is significant. An individual title, that was shot in 3D is no indication of the bigger market.
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