#optical flow

[anthony-samaniego]

billow bay 

[bpod-bpod]

Before a Fall

Imagine walking down this eerie hallway, then all of a sudden the walls begin to shake – forcing you to shift your feet and regain your balance. This 'balance challenge' is a trick of virtual reality used to fluster the participant’s optical flow – how we perceive our movement relative to the scenery – and spot problems with gait and balance common in those with multiple sclerosis. While a walk on a treadmill often isn’t enough to distinguish between healthy and affected legs, which may have damaged neurons more susceptible to falls, this simulated instability creates a tell-tale reaction, helping with diagnosis and treatment. Spotting these symptoms early, with a portable version of this test perhaps, may help patients avoid injury – while similar technology helps to improve their balance in the real world.

Written by John Ankers

Image from the Franz Lab, UNC School of Medicine

Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, USA

Image copyright held by the original authors

Research published in PLOS ONE, March 2020

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[maxofs2d]

[prostheticknowledge]

OpticalFlow meets FlipFluids

Visual experiments from Lulu xXX translates optical flow from movement of videos into 3D fluid dynamics using the Houdini renderer:

Link

[prostheticknowledge]

Kepler

Music video for track by The Hubschrauber put together by GUAP features unique visual style formed from visualizing video motion vectors.

If you don’t know what motion vectors are, it is part of the video compression process to make video sizes smaller by compaing neighbour frames for visual differences between each other.

Dutch media production collective GUAP created the experimental music video for 'Kepler', using a technique that visualises organically generated motion vectors from regular footage. Motion vectors are normally generated to manipulate footage for slow motion for example, but the raw date can be used to create effects like in the video. Kepler is the lead single of the debut album 'Kepler-186f' from rock band The Hubschrauber. The music and the video both heavily incorporate themes of space travel, and leaving our planet and moving to the titular Earth-like planet (Kepler-186f) instead. The record itself will actually be launched to the moon via satellite in 2018, with the help of a Dutch university that develops measuring instruments for a Chinese lunar mission. 

Link

[techbitgr]

LYZRC L200 PRO MAX : Με GPS, αποφυγή εμποδίων και δύο μπαταρίες, δικό σας, με τιμές από 113.7€

Home » LYZRC L200 PRO MAX : Με GPS, αποφυγή εμποδίων και δύο μπαταρίες, δικό σας, με τιμές από 102.3€ Το πέταγμα drone δεν είναι για όλους. Θέλει χάρη, θέλει τεχνική, θέλει σκληρά μαθήματα, σκληρά όπως ο τοίχος που θα στείλει πάνω του το drone, ο ικανός πιλότος του.. Γενικά η περίπτωση των drones θυμίζει λίγο την παροιμία με την ομελέτα και τα αυγά. Αν δε σπάσεις drones δε μαθαίνεις να…

LYZRC L200 PRO MAX : Με GPS, αποφυγή εμποδίων και δύο μπαταρίες, δικό σας, με τιμές από 113.7€

[taufiqmarhaban]

Apollo 17 footage a17v 1181422

Experiment with optical flow to restore and resize 29.97 VCD Mpeg-1 resolution footage from Apollo 17  Landing at Taurus-Littrow to HD 1080p

Original footage: https://www.hq.nasa.gov/alsj/a17/video17.html#landing

Clip name: a17v 1181422.mpg

Clips by: Ken Glover

[youjirec]

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