Structure From Motion
Structure from motion is an interesting method of reverse engineering what an object looks like, from studying how it moves. It is most commonly used in machine vision applications where the object?s shape is not known, and needs to be known in order to interact.
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Detecting 3D is a trait of stereoscopy. Its why humans tend to have two eyes, two different viewpoints create a degree of parallax, and allow us to perceive in 3D. However, motion parallax and movement in all three dimensions is harder to discern than simple 3D structure.
Motion sensors are starting to creep into a whole plethora of applications. They are the linch pins of haptics, of 3D pointers, of stress based sensor networks and locomotive VR interfaces. Yet, there's a problem. Small, discrete motion sensors, tiny enough to be built into larger devices the size say, of a Wii-remote or a 6 ounce HMD, are extremely difficult and expensive to produce.
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This podcast comes from TED 2004, and discusses the nature of the organic brain; its ability to learn, to structure itself, and then re-structure itself, together with examples of early attempts to manually steer that process, altering the input, and changing learned behaviours fundamentally.
Eadweard Muybridge's pioneering work on the motion of all manner of quadrupeds. Horses, goats, cats, gnus, eagles, gazelles, sloths, camels, many others shown walking, running, flying, leaping, almost a complete range of natural motions duplicated for the benefit of animators and skeletal model making.
The paperback 'lightweight version of 'The Human Figure in Motion', this book as might be extrapolated from the title, contains 60 photographic sequences of the more common everyday activities of both men and women. Most are nude, allowing the musculature and natural drooping from one frame to another to be clearly seen and analysed.
Horses and other Animals in Motion is a collection of, as the title says, 45 sets of photographs of horses hauling, walking, trotting, etc., plus sequences of donkeys, an ox, pig, dog, cat, deer and other animals capture details of anatomy and movement. These images, were taken by the definitive expert in the field, Eadweard Muybridge.
After photographer Eadweard Muybridge created his revolutionary photographs of animals in motion in the late 1890s, he turned his attention to the study of the human form, by taking detailed photographs in rapid succession step by step as the human body underwent all manner of daily activities. These photographs have served for over a century, as the most highly acclaimed reference point for animators.
This book and CD is essentially the electronic format version of Eadweard Muybridge?s ?Animals in Motion?. It contains electronic format versions of 167 black-and-white photographic sequences captures the movements of 34 different animals as they run, fly, leap, and perform other characteristic actions. Includes 10 bonus Flash animations plus 15 photographic sequences that are ready to be animated.
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Researchers have long known of the brain's ability to learn based on visual motion input, and a recent study has uncovered more insight into where the learning occurs.
The brain first perceives changes in visual input (local...
It is well known that people use head motion during conversation to convey a range of meanings and emotions, and that women use more active head motion when conversing with each other than men use when they talk with each other.
Leap Motion is unveiling its Leap 3D motion control system, Technology Review Hello World reports.
Leap Motion appears to outrank Kinect in terms of its capability. The technology, reports CNET, can detect motion with up to a...
A low-power motion sensor that crams an accelerometer, gyroscope and wireless transmitter on a three-square-millimeter chip could be used in cellphones and other portable devices, clothing and even implanted in the body....
June 13, June 18 2010
San Francisco, California, USA
Papers in the main technical program must describe high-quality, original research.
Topics of interest include all aspects of computer vision and pattern reco...