Abstract
This paper introduces a novel local intensity fitting energy model for segmenting noisy and intensity inhomogeneous images. A notable feature of the proposed model is its ability to simultaneously segment the image while obtaining a denoised and inhomogeneity-corrected result. The model integrates a local clustering criterion function with a denoising mechanism, in which the total energy functional comprises three key components: a local fitting energy on the denoised image, which generates a local force to attract the segmentation contour towards the expected object boundary; an edge detector-dependent smoothing term to denoise the source image, and a length regularization ensuring precise wrapping of the segmentation contour around the target object. In addition, we employ an efficient iterative convolution-thresholding method to solve the associated energy minimization problem, ensuring energy decay at each iteration. We demonstrate the efficacy and efficiency of our proposed variational image segmentation model through numerical experiments conducted on both synthetic and real images.
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The datasets generated during and analyzed during the current study are available from the corresponding author upon reasonable request.
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Acknowledgements
The authors thank the anonymous referees for their valuable comments and suggestions, which improved the quality of the paper. This work was partially funded by the National Science and Technology Council, Taiwan, under grants NSTC 112-2115-M-005-006-MY2 and NSTC 112-2811-M-008-043, and by the Ministry of Science and Technology, Taiwan, under grant MOST 111-2115-M-008-006-MY3.
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PWH: methodology, analysis; CLT: methodology, analysis, coding; SYY: conceptualization, methodology, analysis, writing; All authors reviewed the manuscript.
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Hsieh, PW., Tseng, CL. & Yang, SY. Efficient variational segmentation with local intensity fitting for noisy and inhomogeneous images. Multimedia Systems 30, 277 (2024). https://doi.org/10.1007/s00530-024-01487-6
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DOI: https://doi.org/10.1007/s00530-024-01487-6
Keywords
- Variational image segmentation
- Local intensity fitting energy
- Noise
- Intensity inhomogeneity
- Iterative convolution-thresholding method