NNs	Neural Networks
CNNs	Convolutional NNs
RNNs	Recurrent NNs
FCL	Fully Connected Layer
UAV	Unmanned Aerial Vehicle
ReLU	Rectified Linear Unit
GTD	Ground Truth Density
ED	Estimated Density
GLCM	Gray Level Co-Occurrence Metrics
HOG	Histogram Oriented Gradient
LBP	Local Binary Pattern
KLT	Kanade–Lucas–Tomasi
GANs	Generative Adversarial Networks
MAE	Mean Absolute Error
MSE	Mean Square Error
STA	ShanghaiTech-A (a dataset)
STB	ShanghaiTech-B (a dataset)
WE	World Expo 10 (a dataset)
CNN-CC	CNN Crowd Counting
Network-CNN-CC	Network-based CNN-CC techniques
Basic-CNN-CC	Basic CNN-CC techniques
Context-CNN-CC	Context-aware CNN-CC techniques
Scale-CNN-CC	Scale-aware CNN-CC techniques
Multi-task-CNN-CC	Multitask CNN-CC techniques
Image-view-CNN-CC	Image-view-based CNN-CC techniques
Aerial-view-CNN-CC	Aerial-view-based CNN-CC techniques
Perspective-CNN-CC	Perspective-view-based CNN-CC techniques
Patch-based-CNN-CC	Patch-based CNN-CC techniques
Whole-image-CNN-CC	Whole-image-based CNN-CC techniques
Training-CNN-CC	Training-approach-based CNN-CC techniques