DMRR	Digital Meter Reading Recognition
CFCP	Coarse-to-Fine Cascaded Perception
TLICN	Two-Level Illumination Correction Network
AICM	Adaptive Illumination Correction Module
IFPM	Illumination-invariant Feature Perception Module
SHN	Stacked Hourglass Network
LLIE	Low-Light Image Enhancement
HE	Histogram Equalization
RoI	regions of interest
GAP	Global Average Pooling
CAM	Channel Attention Module
SAM	Spatial Attention Module
MLP	Multi-Layer Perceptron
DB	Differentiable Binarization
OHEM	Online Hard Example Mining
BCE	Binary Cross-Entropy
CTC	Connectionist Temporal Classification
SAR	Show, Attend, and Read
MGV	Mean Gray Value
BiFPN	Bidirectional Feature Pyramid Network