Simplification of neural networks for skin lesion image segmentation using color channel pruning

•Proposing a pruning framework to simplify CNN structures.•Segmenting skin abnormalities by designing simple and efficient neural network structures.•Reducing the complexity of MLP structures by pruning color channels. Automatic analysis of skin abnormality is an effective way for medical experts to...

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Bibliographic Details
Published in:Computerized medical imaging and graphics 2020-06, Vol.82, p.101729-13, Article 101729
Main Authors: Hajabdollahi, M., Esfandiarpoor, R., Khadivi, P., Soroushmehr, S.M.R., Karimi, N., Samavi, S.
Format: Article
Language:English
Subjects:
Abnormalities
Artificial neural networks
Channels
Color
Complexity
Feature extraction
Image processing
Image segmentation
Lesion segmentation
Low complexity neural network
Medical imaging
Medical instruments
Neural networks
Portable devices
Pruning
Real-time
Simplification
Skin diseases
Skin lesions
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Summary:•Proposing a pruning framework to simplify CNN structures.•Segmenting skin abnormalities by designing simple and efficient neural network structures.•Reducing the complexity of MLP structures by pruning color channels. Automatic analysis of skin abnormality is an effective way for medical experts to facilitate diagnosis procedures and improve their capabilities. Efficient and accurate methods for analysis of the skin abnormalities such as convolutional neural networks (CNNs) are typically complex. Hence, the implementation of such complex structures in portable medical instruments is not feasible due to power and resource limitations. CNNs can extract features from the skin abnormality images automatically. To reduce the burden of the network for feature extraction, which can lead to the network simplicity, proper input color channels could be selected. In this paper, a pruning framework is proposed to simplify these complex structures through the selection of most informative color channels and simplification of the network. Moreover, hardware requirements of different network structures are identified to analyze the complexity of different networks. Experimental results are conducted for segmentation of images from two publicly available datasets of both dermoscopy and non-dermoscopy images. Simulation results show that using the proposed color channel selection method, simple and efficient neural network structures can be applied for segmentation of skin abnormalities.
ISSN:0895-6111
1879-0771
DOI:10.1016/j.compmedimag.2020.101729