Table 1 Abbreviations and symbols.

From: DEENet: an edge-enhanced CNN–Transformer dual-encoder model for steel surface defect detection

 

Symbol

Explain

Model

DEENet

This paper proposes an edge enhancement CNN–Transformer dual encoder model

AKConv

Adaptive-Kernel Convolution

DCF

Dual Channel Fusion

C2f_EEM

Edge-Enhancement Module

CBAM

Convolutional Block Attention Module

ViT

Vision Transformer

Evaluation indicators

mAP

mean Average Precision

F1-score

Harmonic mean of precision and recall

FPS

Frames Per Second

GFLOPs

Measuring the computational complexity and resource consumption of the model

Mathematical symbols

\(C_{i}\) \(T_{i}\)

These represent feature maps from the CNN branch and the Transformer branch, respectively

\(Q,K,V\)

Query, Key, and Value in Attention Mechanisms

\(\sigma\)

Sigmoid activation function

\(F_{a}\)\(F_{b}\)

These represent the shallow and deep features in the edge enhancement module, respectively

\(\varphi (Z)\)

High-frequency feature maps are used to extract edge information through differential operations

\(\oplus\)

Element addition in residual join