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21 March 2023 Multi-focus image registration algorithm based on image preprocessing and improved SIFT
Ke Lin, Wei Pan
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Proceedings Volume 12609, International Conference on Computer Application and Information Security (ICCAIS 2022); 126090X (2023) https://doi.org/10.1117/12.2672153
Event: International Conference on Computer Application and Information Security (ICCAIS 2022), 2022, ONLINE, ONLINE
Abstract
Image registration is an important technology in the image processing, which is widely used in computer vision, image fusion, image reconstruction and other fields. To solve the problem of poor image registration due to fuzzy regions in multi-focus images, this paper proposes a multi-focus image registration algorithm based on image preprocessing and improved SIFT. The reference image and the image to be registered are preprocessed by Gaussian smoothing. And then all images are feature extracted and classified. Last, the image is feature matched by bidirectional adaptive threshold algorithm, and finally the registered image is obtained by the registration result. Compared with SIFT algorithm, the number of feature extraction and feature matching of the proposed algorithm increase by 56.57% and 67.43% respectively.
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Ke Lin and Wei Pan "Multi-focus image registration algorithm based on image preprocessing and improved SIFT", Proc. SPIE 12609, International Conference on Computer Application and Information Security (ICCAIS 2022), 126090X (21 March 2023); https://doi.org/10.1117/12.2672153
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KEYWORDS
Feature extraction
Image registration
Image fusion
Image processing
Fuzzy logic
Image quality
Visualization
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