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Hoshi S, Tasaki K, Maruo K, Ueno Y, Mori H, Morikawa S, Moriya Y, Takahashi S, Hiraoka T, Oshika T. Improvement in Dacryoendoscopic Visibility after Image Processing Using Comb-Removal and Image-Sharpening Algorithms. J Clin Med 2022; 11:jcm11082073. [PMID: 35456168 PMCID: PMC9032983 DOI: 10.3390/jcm11082073] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 02/01/2023] Open
Abstract
Recently, a minimally invasive treatment for lacrimal passage diseases was developed using dacryoendoscopy. Good visibility of the lacrimal passage is important for examination and treatment. This study aimed to investigate whether image processing can improve the dacryoendoscopic visibility using comb-removal and image-sharpening algorithms. We processed 20 dacryoendoscopic images (original images) using comb-removal and image-sharpening algorithms. Overall, 40 images (20 original and 20 post-processing) were randomly presented to the evaluators, who scored each image on a 10-point scale. The scores of the original and post-processing images were compared statistically. Additionally, in vitro experiments were performed using a test chart to examine whether image processing could improve the dacryoendoscopic visibility in a turbid fluid. The visual score (estimate ± standard error) of the images significantly improved from 3.52 ± 0.26 (original images) to 5.77 ± 0.28 (post-processing images; p < 0.001, linear mixed-effects model). The in vitro experiments revealed that the contrast and resolution of images in the turbid fluid improved after image processing. Image processing with our comb-removal and image-sharpening algorithms improved dacryoendoscopic visibility. The techniques used in this study are applicable for real-time processing and can be easily introduced in clinical practice.
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Affiliation(s)
- Sujin Hoshi
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
- Correspondence: ; Tel.: +81-298-533-148
| | - Kuniharu Tasaki
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Kazushi Maruo
- Department of Biostatistics, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan;
| | - Yuta Ueno
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Haruhiro Mori
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Shohei Morikawa
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Yuki Moriya
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Shoko Takahashi
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Takahiro Hiraoka
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
| | - Tetsuro Oshika
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8575, Japan; (K.T.); (Y.U.); (H.M.); (S.M.); (Y.M.); (S.T.); (T.H.); (T.O.)
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