CAMERA POSE-INDEPENDENT ACTION RECOGNITION IN AN OPERATING ROOM

2018 ◽  
Vol SV2018 (1) ◽  
pp. 35-39
Author(s):  
Dinh Tuan Tran
Keyword(s):  
Operating Room ◽  
Action Recognition ◽  
Independent Action ◽  
Camera Pose

Bayesian Covariance Representation with Global Informative Prior for 3D Action Recognition

2021 ◽  
Vol 17 (4) ◽  
pp. 1-22
Author(s):  
Jianhai Zhang ◽  
Zhiyong Feng ◽  
Yong Su ◽  
Meng Xing
Keyword(s):  
Action Recognition ◽  
Temporal Order ◽  
State Of The Art ◽  
Feature Representation ◽  
Independent Action ◽  
Sufficient Statistics ◽  
Informative Prior ◽  
Global Action ◽  
High Order Statistics ◽  
Order Structures

For the merits of high-order statistics and Riemannian geometry, covariance matrix has become a generic feature representation for action recognition. An independent action can be represented by an empirical statistics over all of its pose samples. Two major problems of covariance include the following: (1) it is prone to be singular so that actions fail to be represented properly, and (2) it is short of global action/pose-aware information so that expressive and discriminative power is limited. In this article, we propose a novel Bayesian covariance representation by a prior regularization method to solve the preceding problems. Specifically, covariance is viewed as a parametric maximum likelihood estimate of Gaussian distribution over local poses from an independent action. Then, a Global Informative Prior (GIP) is generated over global poses with sufficient statistics to regularize covariance. In this way, (1) singularity is greatly relieved due to sufficient statistics, (2) global pose information of GIP makes Bayesian covariance theoretically equivalent to a saliency weighting covariance over global action poses so that discriminative characteristics of actions can be represented more clearly. Experimental results show that our Bayesian covariance with GIP efficiently improves the performance of action recognition. In some databases, it outperforms the state-of-the-art variant methods that are based on kernels, temporal-order structures, and saliency weighting attentions, among others.

Hierarchical Hough forests for view-independent action recognition

2016 ◽  
Author(s):  
Barbara Hilsenbeck ◽  
David Munch ◽  
Hilke Kieritz ◽  
Wolfgang Hubner ◽  
Michael Arens
Keyword(s):  
Action Recognition ◽  
Independent Action ◽  
Hough Forests

Viewpoint Independent Action Recognition

2008 ◽  
Vol 19 (7) ◽  
pp. 1623-1634 ◽  
Author(s):  
Fei-Yue HUANG
Keyword(s):  
Action Recognition ◽  
Independent Action

View-independent action recognition: a hybrid approach

2015 ◽  
Vol 75 (12) ◽  
pp. 6755-6775 ◽  
Author(s):  
Seyed Mohammad Hashemi ◽  
Mohammad Rahmati
Keyword(s):  
Action Recognition ◽  
Hybrid Approach ◽  
Independent Action

scholarly journals View-Independent Action Recognition from Temporal Self-Similarities

2011 ◽  
Vol 33 (1) ◽  
pp. 172-185 ◽  
Author(s):  
I N Junejo ◽  
E Dexter ◽  
I Laptev ◽  
Patrick Pérez
Keyword(s):  
Action Recognition ◽  
Independent Action

Biomedical applications: Pitfalls in the practice

1994 ◽  
Vol 52 ◽  
pp. 378-379
Author(s):  
J. D. Shelburne ◽  
Peter Ingram ◽  
Victor L. Roggli ◽  
Ann LeFurgey
Keyword(s):  
Operating Room ◽  
Liquid Nitrogen ◽  
Lung Tissue ◽  
Biomedical Applications ◽  
Microprobe Analysis ◽  
Tissue Sample ◽  
Cellular Level ◽  
Tissue Samples ◽  
Asbestos Fibers

At present most medical microprobe analysis is conducted on insoluble particulates such as asbestos fibers in lung tissue. Cryotechniques are not necessary for this type of specimen. Insoluble particulates can be processed conventionally. Nevertheless, it is important to emphasize that conventional processing is unacceptable for specimens in which electrolyte distributions in tissues are sought. It is necessary to flash-freeze in order to preserve the integrity of electrolyte distributions at the subcellular and cellular level. Ideally, biopsies should be flash-frozen in the operating room rather than being frozen several minutes later in a histology laboratory. Electrolytes will move during such a long delay. While flammable cryogens such as propane obviously cannot be used in an operating room, liquid nitrogen-cooled slam-freezing devices or guns may be permitted, and are the best way to achieve an artifact-free, accurate tissue sample which truly reflects the in vivo state. Unfortunately, the importance of cryofixation is often not understood. Investigators bring tissue samples fixed in glutaraldehyde to a microprobe laboratory with a request for microprobe analysis for electrolytes.

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