{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T12:16:21Z","timestamp":1792671381969,"version":"4.5.0"},"reference-count":43,"publisher":"Wiley","license":[{"start":{"date-parts":[[2021,12,11]],"date-time":"2021-12-11T00:00:00Z","timestamp":1639180800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Healthcare Engineering"],"published-print":{"date-parts":[[2021,12,11]]},"abstract":"<jats:p>In this study, we introduced a preprocessing novel transformation approach for multifocus image fusion. In the multifocus image, fusion has generated a high informative image by merging two source images with different areas or objects in focus. Acutely the preprocessing means sharpening performed on the images before applying fusion techniques. In this paper, along with the novel concept, a new sharpening technique, Laplacian filter\u2009+\u2009discrete Fourier transform (LF\u2009+\u2009DFT), is also proposed. The LF is used to recognize the meaningful discontinuities in an image. DFT recognizes that the rapid change in the image is like sudden changes in the frequencies, low-frequency to high-frequency in the images. The aim of image sharpening is to highlight the key features, identifying the minor details, and sharpen the edges while the previous methods are not so effective. To validate the effectiveness the proposed method, the fusion is performed by a couple of advanced techniques such as stationary wavelet transform (SWT) and discrete wavelet transform (DWT) with both types of images like grayscale and color image. The experiments are performed on nonmedical and medical (breast medical CT and MRI images) datasets. The experimental results demonstrate that the proposed method outperforms all evaluated qualitative and quantitative metrics. Quantitative assessment is performed by eight well-known metrics, and every metric described its own feature by which it is easily assumed that the proposed method is superior. The experimental results of the proposed technique SWT (LF\u2009+\u2009DFT) are summarized for evaluation matrices such as RMSE (5.6761), PFE (3.4378), MAE (0.4010), entropy (9.0121), SNR (26.8609), PSNR (40.1349), CC (0.9978), and ERGAS (2.2589) using clock dataset.<\/jats:p>","DOI":"10.1155\/2021\/7000991","type":"journal-article","created":{"date-parts":[[2021,12,11]],"date-time":"2021-12-11T20:50:06Z","timestamp":1639255806000},"page":"1-17","source":"Crossref","is-referenced-by-count":3,"title":["Hybrid Sharpening Transformation Approach for Multifocus Image Fusion Using Medical and Nonmedical Images"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6387-4114","authenticated-orcid":true,"given":"Sarwar Shah","family":"Khan","sequence":"first","affiliation":[{"name":"Department of Software Engineering, University of Sialkot, Sialkot 51310, Pakistan"},{"name":"Department of Computer & Software Technology, University of Swat, Swat 19130, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4656-1041","authenticated-orcid":true,"given":"Muzammil","family":"Khan","sequence":"additional","affiliation":[{"name":"Department of Computer & Software Technology, University of Swat, Swat 19130, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6523-628X","authenticated-orcid":true,"given":"Yasser","family":"Alharbi","sequence":"additional","affiliation":[{"name":"College of Computer Science & Engineering, University of Hail, Ha\u2019il, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Usman","family":"Haider","sequence":"additional","affiliation":[{"name":"Ghulam Ishaq Khan Institute of Engineering Science and Technology, Topi Swabi, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kifayat","family":"Ullah","sequence":"additional","affiliation":[{"name":"Department of Computer & Software Technology, University of Swat, Swat 19130, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6802-6133","authenticated-orcid":true,"given":"Shahab","family":"Haider","sequence":"additional","affiliation":[{"name":"Department of Computer Science, City University of Science and IT, Peshawar, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","reference":[{"issue":"3","key":"1","doi-asserted-by":"crossref","first-page":"1526","DOI":"10.1109\/TIP.2017.2779274","article-title":"Robust multi-focus image fusion using edge model and multi-matting","volume":"27","author":"Y. 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