Article
Computer Science, Information Systems
Shuang Yu, Xiongfei Li, Mingrui Ma, Xiaoli Zhang, Shiping Chen
Summary: This paper proposes a new multi-focus image fusion algorithm based on L1 image transform, which effectively preserves edges and detail information. The algorithm constructs an edge-preserving image decomposition framework and designs fusion rules for different subbands to retain both structure and detail information. Experimental results demonstrate the algorithm's superiority in terms of visual perception and objective assessments.
MULTIMEDIA TOOLS AND APPLICATIONS
(2021)
Article
Computer Science, Information Systems
Chunli Meng, Ping An, Xinpeng Huang, Chao Yang, Liquan Shen, Bin Wang
Summary: This paper proposes a full-reference light field image quality evaluation index that aims to accurately assess the overall quality of the light field through key refocused images. Features such as gradient and phase congruency operators are used, combined with chrominance features to construct a union feature, and the similarity of the union feature is pooled by relevant visual saliency maps to obtain predicted scores. The efficiency and precision of the proposed method are demonstrated through extensive comparison experiments.
IEEE TRANSACTIONS ON MULTIMEDIA
(2021)
Article
Optics
Xudong Wang, Wenjing Zhao, Aiping Zhai, Dong Wang
Summary: This study proposes and demonstrates a method for efficiently scanning a focus behind scattering media beyond the optical memory effect (ME) region using wavefront tilting and re-optimization (WFT&RO). By scanning the initial focus to the desired position and utilizing the scanned focus for wavefront re-optimization, the method enables fast scanning of the focus while maintaining a relatively uniform intensity.
Article
Multidisciplinary Sciences
Sohee Jeon, Ayoung Choi, Hyunggoo Kwon
Summary: The newly developed extended-depth-of-focus AcrySof((R)) Vivity (TM) intraocular lens (IOL) shows promise in minimizing dysphotopsia, but has limitations in uncorrected near visual acuity (UNVA). A study found that pupil size is significantly associated with UNVA, suggesting that eyes with smaller pupils may benefit from UNVA.
Article
Computer Science, Artificial Intelligence
Jie Song, Mengjun Liu
Summary: This paper proposes a new methodology to convert a full-reference focus quality assessment metric into a no-reference one. The methodology includes three hypotheses that describe the relationship between focus quality of the original image and its variants. Two no-reference metrics are constructed using this methodology, one using Brenner Gradient and the other using a full-reference metric proposed by the authors. Evaluation is conducted on both a public dataset and a proposed dataset, showing that the second metric exhibits the best performance with comparable calculation time to some fastest metrics considered. (c) 2023 Elsevier Ltd. All rights reserved.
PATTERN RECOGNITION
(2023)
Article
Computer Science, Information Systems
Huibin Luo, KinTak U, Weikang Zhao
Summary: This paper proposes a new multi-focus image fusion method based on pixel-wise voting and morphology. By calculating the gray-scale variance through sliding window and obtaining the voting matrix, a multi-focus decision map is obtained. Morphological operations are then applied to denoise the image and achieve better fusion effect.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Neurosciences
Sebastiaan Mathot, Hermine Berberyan, Philipp Buechel, Veera Ruuskanen, Ana Vilotijevic, Wouter Kruijne
Summary: The size of the eyes' pupils can be manipulated through ipRGC activation, and it has significant effects on visual processing. Induced and spontaneous changes in pupil size mainly modulate activity patterns in the high-frequency beta range, while spontaneous pupil size tends to correlate positively with intertrial coherence in the alpha band.
Article
Optics
Xiao Chen, Noriyuki Tagami, Hiroki Konno, Tomoya Nakamura, Saori Takeyama, Xiuxi Pan, Masahiro Yamaguchi
Summary: This study proposes a novel computational imaging system that integrates a seethrough screen with volume holographic optical elements and a digital camera unit. The system allows eye-contact and captures high-quality frontal images, making it valuable for video communication and other visual applications.
Article
Ophthalmology
Nisar Latif, Shehzad A. Naroo
Summary: This study investigates the immediate short-term effects of smoking on the tear film and accommodative ability of habitual smokers. The results show that smoking has an adverse effect on TBUT and AoA, but these effects appear to be transient.
CONTACT LENS & ANTERIOR EYE
(2022)
Article
Environmental Sciences
Mario Carere, Antonio Antoccia, Annamaria Buschini, Giada Frenzilli, Francesca Marcon, Cristina Andreoli, Gessica Gorbi, Antonio Suppa, Serena Montalbano, Valentina Prota, Francesca De Battistis, Patrizia Guidi, Margherita Bernardeschi, Mara Palumbo, Vittoria Scarcelli, Marco Colasanti, Veronica D'Ezio, Tiziana Persichini, Massimiliano Scalici, Antonella Sgura, Federica Spani, Ion Udroiu, Martina Valenzuela, Ines Lacchetti, Kevin di Domenico, Walter Cristiano, Valentina Marra, Anna Maria Ingelido, Nicola Iacovella, Elena De Felip, Riccardo Massei, Laura Mancini
Summary: The study highlights the presence of a wide range of emerging contaminants in aquatic ecosystems, such as pharmaceuticals, pesticides, personal care products, and PFAS, which can have a significant impact on environmental health. The use of Effect-Based Methods (EBMs) revealed chemical pollution and ecotoxicological effects in the river, providing insights for future studies and measures to monitor, mitigate, or eliminate chemical contamination and its adverse effects on ecosystem health.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Automation & Control Systems
Xuefeng Zhang, Hao He, Jin-Xi Zhang
Summary: This paper presents a novel approach for the fusion of multi-focus images in registered or mis-registered cases. The proposed approach includes the use of fractional order differential mask for pre-processing, closed matting technique for refining decision maps, and global threshold processing for final decision maps. Experimental results demonstrate the superiority of the designed algorithm in terms of visual perception and objective evaluation compared to existing algorithms.
Article
Computer Science, Information Systems
Jun Chen, Xuejiao Li, Linbo Luo, Jiayi Ma
Summary: Multi-focus image fusion technology aims to extract different focused regions from partially focused images and merge them into a clear composite image. This paper introduces an accurate focus measurement and segmentation method, and utilizes an image matting algorithm and the correlation between source images to optimize the fusion decision map and improve the image fusion quality.
IEEE TRANSACTIONS ON MULTIMEDIA
(2022)
Article
Optics
Andre Perennou, Veronique Quintard, Adan Omar Arellanes
Summary: The study proposes the use of an arbitrary waveform generator to create a specific radio frequency (RF) signal for an acousto-optic tunable filter. By controlling the acoustic pulse, the filter's transmission function can be changed in terms of selectivity and side-lobe levels. The measurement results show agreement with the simulation model, and the Hamming window effectively suppresses side lobes in the transmission function even at high acoustic powers.
Article
Neurosciences
Marcos L. Aranda, Omar Narvaez, Florencia Altschuler, Juan S. Calanni, Maria F. Gonzalez Fleitas, Pablo H. Sande, Damian Dorfman, Luis Concha, Ruth E. Rosenstein
Summary: The study found that optic neuritis affects the non-image-forming visual system, leading to weakened pupillary reflex, misconnection between the retina and suprachiasmatic nuclei, and decreased RGC number. Melatonin can prevent the decrease in blue light-evoked pupillary reflex and the disruption in locomotor activity rhythm induced by optic neuritis.
Article
Computer Science, Information Systems
Svetlana N. Khonina, Sergey G. Volotovskiy, Alexey P. Dzyuba, Pavel G. Serafimovich, Sergey B. Popov, Muhammad A. Butt
Summary: The study found that increasing the high-degree power phase apodization function can improve the independence of the PSF and defocusing in the imaging system, while reducing the depth of field, which can be compensated by increasing the parameter but might lead to an increase in the size of the light spot. The optimal solution involves balancing restrictions on the circle of confusion and depth of field.
