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- W4307293208 endingPage "119095" @default.
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- W4307293208 abstract "COVID-19 is pervasive and threatens the safety of people around the world. Therefore, now, a method is needed to diagnose COVID-19 accurately. The identification of COVID-19 by X-ray images is a common method. The target area is extracted from the X-ray images by image segmentation to improve classification efficiency and help doctors make a diagnosis. In this paper, we propose an improved crow search algorithm (CSA) based on variable neighborhood descent (VND) and information exchange mutation (IEM) strategies, called VMCSA. The original CSA quickly falls into the local optimum, and the possibility of finding the best solution is significantly reduced. Therefore, to help the algorithm avoid falling into local optimality and improve the global search capability of the algorithm, we introduce VND and IEM into CSA. Comparative experiments are conducted at CEC2014 and CEC’21 to demonstrate the better performance of the proposed algorithm in optimization. We also apply the proposed algorithm to multi-level thresholding image segmentation using Renyi’s entropy as the objective function to find the optimal threshold, where we construct 2-D histograms with grayscale images and non-local mean images and maximize the Renyi’s entropy on top of the 2-D histogram. The proposed segmentation method is evaluated on X-ray images of COVID-19 and compared with some algorithms. VMCSA has a significant advantage in segmentation results and obtains better robustness than other algorithms. The available extra info can be found at https://github.com/1234zsw/VMCSA." @default.
- W4307293208 created "2022-10-31" @default.
- W4307293208 creator A5024138459 @default.
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- W4307293208 creator A5028441474 @default.
- W4307293208 creator A5042568127 @default.
- W4307293208 creator A5082892026 @default.
- W4307293208 date "2023-03-01" @default.
- W4307293208 modified "2023-10-13" @default.
- W4307293208 title "Boosted crow search algorithm for handling multi-threshold image problems with application to X-ray images of COVID-19" @default.
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