Classical Biomedical Image Analysis in the Era of Deep Learning: Relevance, Complementarity and Hybrid Methods
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biomedical Sensors".
Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 16054
Special Issue Editors
Interests: pattern recognition; computer vision; expert systems; biomedical applications
Special Issues, Collections and Topics in MDPI journals
Interests: signal/image processing and analysis; pattern recognition, data mining & machine learning; software engineering; bio-inspired algorithms & fuzzy systems; decision support & cognitive systems; challenging applications including but not limited to clinical informatics and biomedical engineering
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The deep learning breakthrough dramatically affected all areas of computer vision and image analysis with subsequent repercussions in biomedical image analysis. The state of the art in standard related tasks, such as classification, retrieval and segmentation of biomedical images has been conquered by methods based on convolutional neural networks (CNNs), recurrent neural networks (RNNs) or reinforcement learning. Various CNN-based configurations, such as CifarNet, AlexNet, GoggLeNet, ResNet50, VCG16, and DenseNet, have demonstrated classification accuracy that challenges the one obtained by domain experts. Still, several issues complicate the successful adoption of such methods in clinical practice: 1) deep learning approaches usually rely on the availability of large labelled datasets, which are often hard to obtain, 2) despite the high overall accuracies obtained, deep architectures often appear as ‘black boxes’ and their results cannot be intuitively interpreted by domain experts, 3) the deployment of deep architectures often relies on GPUs and expensive hardware.
On the other hand, ‘classical’ image analysis methods, based on handmade features (SIFT, SURF, LBP, BRIEF etc.), bag-of-visual words, standard classifiers (random forests, SVMs,…), standard segmentation approaches (level-sets, graph-cuts,…), and rule-based decisions, have been refined for several years and, despite their limitations, provide alternatives with respect to the aforementioned issues. This Special Issue is dedicated to biomedical applications of such classical methods, in a complementary fashion to deep neural networks (DNNs). Submitted works could be original contributions, including but not limited to:
- Hybrid schemes combining handcrafted features and DNN-learned features,
- Computer-aided Diagnosis systems combining rule-based and DNN-based components,
- Intelligent labelling techniques employing classical methods,
- Pretasks for DNN training based on classical image analysis methods,
- Standalone ‘classical’ methods, provided that quantitative or qualitative comparisons with DNNs indicate some advantage in terms of accuracy, efficiency, dataset requirements etc.
Reviews on related challenging topics or comparative studies evaluating classical and DNN-based methods are also welcome.
Prof. Dr. Michalis Savelonas
Prof. Dr. Dimitris Iakovidis
Guest Editors
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Keywords
- Machine learning
- pattern recognition
- biomedical image analysis
- biomedical imaging
- image classification
- image retrieval
- image segmentation
- decision support systems
- CAD systems
- unsupervised learning
- handcrafted features
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