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Table 1 List of Abbreviations

From: Hajj pilgrimage abnormal crowd movement monitoring using optical flow and FCNN

Short form

Full form

FCNN

Fully convulation neural network

UCSD Ped2

University of California San Diego

CNN

convolutional neural network

HoG

Histograms of gradients

GPU

Graphics processing unit

MRF

Markov random field

PCA

Patterns using a combination of probabilistic

GMMs

Gaussian mixture model

HMM

Hidden Markov model

SF

Social force

BOV

bag of videos

HOT

Histogram of oriented tracklets

SCD

Structural context descriptor

HVS

Human visual system to determine spatial

SSMF

Sparse semi-nonnegative matrix factorization

CL

Convulation layer

DL

Dropout layer

FCL

Fully convulation layer

PL

Pooling layer

BPS

Backward propagation stage

DCNN

Deep convulation neural network

LK

Lucas-Kandae

ROC

Receiver operating characteristic

AUC

Area under the ROC curve