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Pattern of motion in a visual scene due to relative motion of the observer
Optical flow or optic flow is the pattern of apparent motion of objects, surfaces, and edges in a visual scene caused by the relative motion between an
Optical_flow
Computer vision technique for optical flow estimation
used differential method for optical flow estimation developed by Bruce D. Lucas and Takeo Kanade. It assumes that the flow is essentially constant in a
Lucas–Kanade_method
Method of estimating optical flow
estimating optical flow is a global method which introduces a global constraint of smoothness to solve the aperture problem (see Optical Flow for further
Horn–Schunck_method
American-born computer scientist
the PAMI Distinguished Researcher Award. Black's thesis reformulated optical flow estimation as a robust M-estimation problem. The main observation was
Michael_J._Black
Determining the position and orientation of a robot by analyzing associated camera images
feature detection and optical flow fields and directly uses the image intensities. Dead reckoning Odometry Optical flow Optical motion capture Perspective-n-Point
Visual_odometry
optical flow, has to be used. For example, a neighborhood which has a constant intensity may correspond to a non-zero motion field, but the optical flow
Motion_field
Process to photograph fluid flow
photographing optical inhomogeneities in transparent media that are not necessarily visible to the human eye, typically used to study fluid flow, like the flow of
Schlieren_photography
Optical IP Switching (OIS), is a novel method of creating transparent optical connections between network nodes using a flow-based approach. An IP flow
Optical_IP_Switching
Video format that operates at 24 frames per second
highest quality method of converting 60i footage to 24p. It involves using optical flow to extrapolate 24 frames of information from 60 frames while compensating
24p
Image edge detection algorithm
estimation errors in optical flow estimation. Larger schemes with even higher accuracy and optimized filter families for extended optical flow estimation have
Sobel_operator
Computerized information extraction from images
representation of objects as interconnections of smaller structures, optical flow, and motion estimation. The next decade saw studies based on more rigorous
Computer_vision
Generating high-resolution video frames from given low-resolution ones
low-resolution optical flow, upsample it to high-resolution and warp previous output frame by using this high-resolution optical flow STTN (the spatio-temporal
Video_super-resolution
Process of recording the movement of objects or people
Universal Capture that utilized 7 camera setup and the tracking the optical flow of all pixels over all the 2-D planes of the cameras for motion, gesture
Motion_capture
Number of frames rendered in one second
categorized into optical flow or kernel-based and pixel hallucination-based methods. Flow-based methods linearly combine predicted optical flows between two
Frame_rate
Image upscaling technology by Nvidia
additional frame is generated. DLSS 3.0 makes use of a new generation Optical Flow Accelerator (OFA) included in the Ada Lovelace architecture of GeForce
Deep_Learning_Super_Sampling
Open-source autopiloting library
traditional L1 GPSs, barometers, magnetometers, laser and sonar rangefinders, optical flow, ADS-B transponder, infrared, airspeed, sensors, and computer vision/motion
ArduPilot
Group of neurological disorders causing seizures
demonstrated consistent performance for real-time seizure alerting. An optical-flow-based automated approach reconstructs global movement parameters from
Epilepsy
Method to measure velocities in fluid
Particle image velocimetry (PIV) is an optical method of flow visualization used in education and research. It is used to obtain instantaneous velocity
Particle_image_velocimetry
Variant of Transformer designed for multimodal data
predict optical flow on one pixel a query would attend using the pixel’s xy coordinates plus an optical flow task embedding to produce a single flow vector
Perceiver
Equation describing the transport of some quantity
flow of water through a converging pipe will adjust solely by increasing its velocity as water is largely incompressible. In computer vision, optical
Continuity_equation
1999 film by the Wachowskis
were incorporated into the bullet time scene, and algorithms based on optical flow were used to interpolate between the still images to produce a fluent
The_Matrix
Type of computer mouse
to determine how far the mouse has moved. To understand how optical flow is used in optical mice, imagine two photographs of the same object except slightly
Optical_mouse
Actions to enhance ability to understand
shape parametrization". The theory of optical flow derives from concepts of active perception, and while optical flow is now typically considered a vector
Active_perception
categories: image difference, statistical methods, wavelets, layering, optical flow and factorization. Moreover, depending on the number of views required
Rigid_motion_segmentation
Series of GPUs by Nvidia
equipped with built-in GTX 1650 chipsets. TU117 does not support Nvidia Optical Flow, which is useful for motion interpolation software. All TU117 GPUs use
GeForce_GTX_16_series
Type of image
an image. Motion saliency: Relies on motion in a video, detected by optical flow. Objects that move are considered salient. Objectness: Objectness reflects
Saliency_map
The correspondence problem, as the basis for calculating optical flow and stereo matching, is a fundamental problem in image processing. It refers to the
Correspondence_problem
Process used in video coding/compression
and zoom. More often than not, the term motion estimation and the term optical flow are used interchangeably.[citation needed] It is also related in concept
Motion_estimation
Type of imaging sensor
frame cameras. This allows them to track object and camera movement (optical flow) more accurately. They yield grey-scale information. Initially (2014)
Event_camera
Timing of substance within a medium
along the flow (collinear measurements would require generally high flow velocities and extremely narrow-band optical filters). In optical interferometry
Time_of_flight
known video matting method was developed in 2001. The method utilizes optical flow for trimap propagation and a Bayesian image matting technique which is
Video_matting
Digital image distortion
kind of warping has taken place between consecutive images, one can use optical flow estimation techniques. ImWIP is an open-source, image warping tool for
Image_warping
Visual sensation of spatial awareness
arises from processing motion information when the observer moves (e.g. optical flow, parallax). The sensation of stereopsis is similar in both cases. In
Stereopsis
vision, and it is commonly used in visual correspondence problems such as optical flow calculation and disparity estimation. The census transform is related
Census_transform
American psychologist (1904–1979)
the concept of optical flow (later published as part of his theory of affordance). According to Gibson, one determines the optical flow (which can be described
James_J._Gibson
Medical diagnostic method
Qian (2023). "Ranging of Confocal Endoscopy Probe Using Recognition and Optical Flow Algorithm". In Yu, Chen; Zhou, Jiehan; Song, Xianhua; Lu, Zeguang (eds
Confocal_endoscopy
Integrated circuit technology
intelligence Lithionics Neuromorphic olfaction systems Neurorobotics Optical flow sensor Physical neural network SpiNNaker SyNAPSE Retinomorphic sensor
Neuromorphic_computing
Video editing application by Blackmagic Design
keyframe editing, voice over palettes, multi layer compositing tools, new optical flow vector tools and major updates to Magic Mask and depth map. It was released
DaVinci_Resolve
2003 film by the Wachowskis
(similar to the bullet time rig) photogrammetric capture technique called optical flow. The algorithm for Universal Capture was written by George Borshukov
The_Matrix_Reloaded
Means of dead reckoning used by animals
sun position) and distance computations (by monitoring leg movement or optical flow). In mammals, three important discoveries shed light on this. The first
Path_integration
British engineer and computer scientist
automatically extracting 3D models from video frames, using techniques such as optical flow, motion field and point clouds. Moorby joined Co-Design Automation in
Phil_Moorby
are used to process spatial RGB images, temporal optical flow images, and temporal warped optical flow images, respectively. An attention model is employed
Visual_temporal_attention
GPU microarchitecture by Nvidia
intelligence large matrix operations Deep Learning Super Sampling (DLSS) Nvidia Optical Flow Accelerator for video interpolation workloads Memory controller with
Turing_(microarchitecture)
Electrical device which utilizes a sensor to detect nearby motion
by visitors in an art gallery. With a panning camera, models based on optical flow are used to distinguish between apparent background motion caused by
Motion_detector
Indian computer scientist and businessman
and Anandan” optical flow algorithm has been widely used, for example, in special effects. The method was used to compute optical flow for the painterly
P._Anandan
Lab technique in biology and chemistry
and thereby purify cells of interest based on their optical properties. The first impedance-based flow cytometry device, using the Coulter principle, was
Flow_cytometry
German aerospace engineer and academic (born 1962)
related to rotorcraft aerodynamics, transonic wind tunnel testing, and optical flow measurement technologies. He is lead author of a number of books, including
Markus_Raffel
Form of video processing
with native DXVA support for frame interpolation. HopperRender is an optical flow frame interpolator DirectShow filter using OpenCL. Bluesky Frame Rate
Motion_interpolation
Open source AI framework by Google
"Facial Landmarks Detection System with OpenCV Mediapipe and Python using Optical Flow (Active) Approach". 2023 3rd International Conference on Advance Computing
MediaPipe
Middleware software suite
Launching in September 2023, FSR 3 uses a combination of FSR 2 and optical flow analysis, which runs using asynchronous compute (as opposed to Nvidia's
GPUOpen
Perception
visual elements are seen moving in the same direction at the same rate (optical flow), perception associates the movement as part of the same stimulus. For
Principles_of_grouping
derivation of the displacement fields. Many methods are based upon the optical flow. In fluid mechanics a similar method is used, called Particle Image Velocimetry
YaDICs
combination of markerless motion capture, per-frame texture capture and optical flow of pixels over the data from 7 camera setup bought into a shared UV space
Firsts_in_animation
Structured arrangement of light with respect to a point of observation
always be structured in this way. He also noticed that "optical flow patterns", or optical flow invariants, are produced in the array as the agent moves
Ambient_optic_array
recognition can categorized as follows: Methods based on optical flow: by applying optical flow to the dynamic texture, velocity with direction and magnitude
Dynamic_texture
German computer scientist
(ELLIS). Sun, Deqing; Roth, Stefan; Black, Michael J. (2010). "Secrets of optical flow estimation and their principles". 2010 IEEE Computer Society Conference
Stefan_Roth
American fluid dynamicist
multiphase flow, turbulence, turbomachinery flows and oceanography flows, flow-induced vibrations and noise, and development of optical flow diagnostics
Joseph_Katz_(professor)
Light-conducting fiber
An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers are widely used
Optical_fiber
(Two-Handed Movement Tracker Tracking Bi-Manual Movements); 7,379,566 (Optical Flow-Based Tilt Sensor For Phone Tilt Control); 7,389,591 (Phone Tilt for
GestureTek
Series of GPUs by Nvidia
10-bit 120FPS AV1 fixed function hardware encoding A new generation of Optical Flow Accelerator to aid DLSS 3.0 intermediate AI-based frame generation No
GeForce_RTX_40_series
Flow where fluid particles follow smooth paths in layers
flow of the water downstream from the tap can transition to turbulent flow. Optical transparency is then reduced or lost entirely. Laminar airflow is used
Laminar_flow
Series of GPUs by Nvidia
(RT) cores (bounding volume hierarchy acceleration), tensor (AI) cores, optical flow acceleration, dedicated Integer (INT) cores for concurrent execution
GeForce_RTX_20_series
as a product. Optical mouse sensor: The sensor chip used in an optical mouse is a vision chip. Mitsubishi silicon retina chip Optical flow sensor Active
Vision_chip
Type of software algorithm for image manipulation
trained. In a work by Chen Dongdong et al. they explored the fusion of optical flow information into feedforward networks in order to improve the temporal
Neural_style_transfer
German computer scientist
works on non-rigid structure from motion for deformable tracking, dense optical flow estimation, non-rigid video registration, 3D reconstruction of deformable
Lourdes_Agapito
Also referred to as CGI
motion-capture and multi-camera setup photogrammetric capture technique called optical flow was used to make digital look-alikes for the Matrix movies. More recently
Virtual_cinematography
Integration of the sensory and motor systems
detected visually as a rotation of the environment termed optical flow. The input of the optical flow is then converted into a motor command to the fly's neck
Sensory-motor_coupling
Surname list
vision Lucas–Kanade method, is a widely used differential method for optical flow in computer vision Tomasi–Kanade factorization, is the seminal work by
Kanade
Optical component allowing the transmission of light in only one direction
An optical isolator, or optical diode, is an optical component which allows the transmission of light in only one direction. It is typically used to prevent
Optical_isolator
Area of one's field of vision outside of the point of fixation
is thought to be possibly concerned with threat detection, measuring optical flow, color constancy, or circadian rhythm. Averted vision Bitemporal hemianopsia
Peripheral_vision
British psychologist
been cited as one of the first scientists to develop the concept of optical flow. Grindley's academic career began at the University of Bristol, where
G._C._Grindley
American computer scientist (born 1943)
work in the 1970s and 1980s is focused in this area on the topics of optical flow, photometric stereo as well as closed-form solutions of orientation problems
Berthold_K.P._Horn
Topics referred to by the same term
a South African brand of ice tea Background Oriented Schlieren, an optical flow visualization technique Balance of system, components of a photovoltaic
Bos_(disambiguation)
Optical illusion in which a static image appears to be moving
Optical art (or Op art.) is when artists use simple black and white patterns that create vivid illusions of motion, which are known as optical flow.
Illusory_motion
Scientific instruments
Optical tweezers (originally called single-beam gradient force trap) are scientific instruments that use a highly focused laser beam to hold and move
Optical_tweezers
Method to visualize density variations in transparent media
Bradley; Heidrich, Wolfgang; Ihrke, Ivo (5 October 2008). "An evaluation of optical flow algorithms for background oriented schlieren imaging". Experiments in
Schlieren_imaging
Video software application produced by Apple Inc.
Import, playback, and editing of HEVC video clips and HEIF photos. Faster optical flow analysis Motion 5.4.1 was released on April 9, 2018. New feature: ProRes
Motion_(software)
Family of insects
and also by evaluating the movement of objects in their visual field (optical flow). Directions are measured using the position of the sun. They integrate
Ant
Computational neuroscience model
SNS are listed here: This study produced an SNS that calculated the optic flow of a lobster's visual scene, and formulated direction-specific descending
Synthetic_nervous_system
Sliding motion vertically or horizontally over display devices
if the user pulled the device closer to them. Smartphone cameras and “optical flow” image analysis utilize this technique nowadays. A 1996 research paper
Scrolling
of ultrasound to detect flow velocity. The much shorter optical wavelength means this technology is able to detect low flow velocities out of the range
Photoacoustic_Doppler_effect
Quantification of bulk fluid movement
Flow measurement is the quantification of bulk fluid movement. Flow can be measured using devices called flowmeters in various ways. Volumetric flow meters
Flow_measurement
Tensor related to gradients
The structure tensor also plays a central role in the Lucas-Kanade optical flow algorithm, and in its extensions to estimate affine shape adaptation;
Structure_tensor
Special effect
film or video footage by morphing between each individual frame using optical flow technology.[citation needed] Morphing has also appeared as a transition
Morphing
Open source compositing software
store several color layers, or for non-color information such as depth, optical flow, binocular disparity, or masks. Support for reading and writing video
Natron_(software)
Computer vision algorithm
Meng; Wu, Chengdong; Zhang, Yunzhou (2008-07-01). "Multi-resolution optical flow tracking algorithm based on multi-scale Harris corner points feature"
Harris_corner_detector
Visualization technique in fluid dynamics
fluid flow will exhibit the most accurate visualization. Optical methods: Some flows reveal their patterns by way of changes in their optical refractive
Flow_visualization
Type of image noise
can be used to measure activity, by means of, for example, an optical flow sensor (optical computer mouse). In biological materials, the phenomenon is known
Speckle_(interference)
Refractive property of materials
ne) but still has the power flow in the direction of the wave vector. A crystal with its optic axis parallel to the optical surface, may be used to create
Birefringence
images. OCT can be used to capture functional images of blood flow, a technique known as optical coherence tomography angiography (OCT-A). SV-OCT is one method
Speckle variance optical coherence tomography
Speckle_variance_optical_coherence_tomography
Particle Emitter 3D BCC DVE Basic BCC Drop Shadow BCC Fractal Noise BCC Optical Flow BCC Pin Art 3D BCC DVE BCC Emboss BCC Granite BCC Posterize Time BCC
Boris_RED
Non-destructive chromatography detector measuring UV or visible light absorption
diffraction grating or prism, a flow cell, to where the sample arrives directly from the chromatographic column, an optical bench of lenses and mirrors,
UV_detectors
Area of computer graphics
after 2000. In The Matrix Reloaded and The Matrix Revolutions, dense optical flow from several high-definition cameras was used to capture realistic facial
Computer_facial_animation
Camera that can see in all directions
ability to capture a 360-degree view, better results can be obtained for optical flow and feature selection and matching. Within the real estate industry,
Omnidirectional_camera
Irregular frame delivery causing perceived stutter despite adequate average frame rates
2022, Nvidia introduced AI-based frame generation, which uses dedicated optical flow hardware and a neural network to create new frames between traditionally
Micro_stuttering
Optical inhomogeneities in transparent media
(/ˈʃlɪərən/ SHLEER-ən; German: [ˈʃliːʁn̩] , German for 'streaks') are optical inhomogeneities in transparent media that are not necessarily visible to
Schlieren
Extraction of information from images via digital image processing techniques
segmentation, motion detection e.g. Single particle tracking, video tracking, optical flow, medical scan analysis, 3D Pose Estimation. Since the early 2010s, deep
Image_analysis
Mathematical image techniques
Digital image correlation and tracking is an optical method that employs tracking and image registration techniques for accurate 2D and 3D measurements
Digital image correlation and tracking
Digital_image_correlation_and_tracking
Model for predicting digital media quality
filter bank using a perceptually relevant measurement of phase-based optical flow. These measurements on the reference and test videos are then differentially
MOVIE_Index
System for visual inspection of printed circuit boards by a computerized system
Automated optical inspection (AOI) is an automated visual inspection of printed circuit board (PCB) (or LCD, transistor) manufacture where a camera autonomously
Automated_optical_inspection
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