Results 91 to 100 of about 776,776 (196)

Optical Flow on Evolving Surfaces with an Application to the Analysis of 4D Microscopy Data

We extend the concept of optical flow to a dynamic non-Euclidean setting. Optical flow is traditionally computed from a sequence of flat images. It is the purpose of this paper to introduce variational motion estimation for images that are defined on an ...
A. Imiya, A. Torii, B.K.P. Horn, C.B. Kimmel, J. Lefèvre, P. Cermelli, P. Quelhas, R. Courant, R.M. Warga, S. Baker, S.G. Megason, T. Mizoguchi   +11 more
core   +2 more sources

Bio-inspired speed detection and discrimination [PDF]

In the field of computer vision, a crucial task is the detection of motion (also called optical flow extraction). This operation allows analysis such as 3D reconstruction, feature tracking, time-to-collision and novelty detection among others.
Cerda, Mauricio, Girau, Bernard, Terissi, Lucas   +2 more
core  

Multi-level processing of emotions in life motion signals revealed through pupil responses

eLife
Perceiving emotions from the movements of other biological entities is critical for human survival and interpersonal interactions. Here, we report that emotional information conveyed by point-light biological motion (BM) triggered automatic physiological
Tian Yuan, Li Wang, Yi Jiang
doaj   +1 more source

Cortical Dynamics of Visual Motion Perception: Short-Range and Long Range Apparent Motion [PDF]

This article describes further evidence for a new neural network theory of biological motion perception that is called a Motion Boundary Contour System. This theory clarifies why parallel streams Vl-> V2 and Vl-> MT exist for static form and motion form ...
Grossberg, Stephen, Rudd, Michael E.
core  

Continuous volumetric imaging via an optical phase-locked ultrasound lens

In vivo imaging at high spatiotemporal resolution is key to the understanding of complex biological systems. We integrated an optical phase-locked ultrasound lens into a two-photon fluorescence microscope and achieved microsecond-scale axial scanning ...
Cui, M., Germain, R., Kong, L., Lin, C., Little, J., Lämmermann, T., Tang, J., Yu, Y.   +7 more
core   +1 more source

Computing motion in the primate's visual system [PDF]

Computing motion on the basis of the time-varying image intensity is a difficult problem for both artificial and biological vision systems. We will show how one well-known gradient-based computer algorithm for estimating visual motion can be implemented ...
Koch, Christof, Mathur, Bimal, Wang, H. Taichi   +2 more
core  

Motion by Stopping: Rectifying Brownian Motion of Non-spherical Particles

We show that Brownian motion is spatially not symmetric for mesoscopic particles embedded in a fluid if the particle is not in thermal equilibrium and its shape is not spherical. In view of applications on molecular motors in biological cells, we sustain
A. Einstein, Christian Goll, K. Mecke, Klaus Mecke, M. v. Smoluchowski, R. Feynman, Susan Sporer   +6 more
core   +2 more sources

Do different experimental tasks affect psychophysical measurements of motion perception in autism-spectrum disorder? An analysis

Clinical Optometry, 2018
Asmaa Bakroon,1 Vasudevan Lakshminarayanan1–3 1Theoretical and Experimental Epistemology Laboratory, School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada; 2Departments of Physics and Systems Design Engineering ...
Bakroon A, Lakshminarayanan V
doaj  

Life Detection From Biological Motion. [PDF]

Curr Dir Psychol Sci, 2023
Troje NF, Chang DHF.
europepmc   +1 more source

Audiovisual correspondence facilitates the visual search for biological motion. [PDF]

Psychon Bull Rev, 2023
Shen L, Lu X, Wang Y, Jiang Y.
europepmc   +1 more source