Defect detection 14 Defects 11 Deep learning 6 deep learning 5 defect detection 4 Convolutional neural networks 3 Extraction 3 Feature extraction 3 Semantics 3 Additives 2 Algorithm unfolding 2 CNN 2 Clutter (information theory) 2 Clutter suppression 2 Compressed sensing 2 Compressive sensing 2 Convolution 2 Detection accuracy 2 Detection methods 2 Detection of materials 2 Echo suppression 2 Feature map 2 Iterative methods 2 Layered Structures 2 MIMO systems 2 Machine learning 2 Material defect 2 Mean square error 2 Non destructive testing 2 Nondestructive examination 2