Displays最新文献

{"title":"EDRNet: An attention-based model for multi-type tumor and polyp segmentation in medical imaging","authors":"Syed Wajahat Ali ,&nbsp;Adeel Feroz Mirza ,&nbsp;Muhammad Usman ,&nbsp;Zaiyue Yang","doi":"10.1016/j.displa.2025.103031","DOIUrl":"10.1016/j.displa.2025.103031","url":null,"abstract":"<div><div>In the pursuit of advancing medical image segmentation, this study introduces a novel neural network, Efficient Deep Residual Network (EDRNet). Our approach is designed to handle different types of tumors, encompassing MRI brain tumor segmentation, three breast tumor ultrasound segmentation tasks, and cholorectal polyp segmentation from the Kvasir dataset. EDRNet incorporates advanced architectural features such as Enhanced Residual Dilated Blocks and a Deep Residual Network (DRNet), alongside an EfficientNet-based encoder, optimizing the extraction and processing of image features. A key innovation in our model is the integration of Spatial Channel Fusion Attention, with the DRNet which combines global and local feature extractors using an attention feature fusion module. Our modified Attention Feature Fusion Module (AFFM) plays a crucial role in integrating local features (lc), fused features (fuse), and global features (gf) to produce a rich, multi-scale representation for improved segmentation performance at decoder part. Furthermore, we have used the transfer learning based approach to train single model for the multiple cancer datasets with combine loss functions to efficiently train the neural networks. Specifically, in the MRI and breast cancer datasets, EDRNet has demonstrated good capability in properly segmenting all types of brain tumors with precise details, whether located on the left or right side of the brain. This design choice significantly enhances the model’s ability to differentiate low and high level features and boundaries in medical images, crucial for accurate segmentation. Quantitative evaluations demonstrate that EDRNet sets new benchmarks on all considered datasets. Notably, improvements in Intersection over Union (IoU) were recorded as a 9 % increase for the MRI brain tumor segmentation, a substantial 4% enhancement for breast cancer segmentation datasets, and a 1.5% improvement in cholorectal polyp segmentation on the Kvasir dataset. These results underline the efficacy of EDRNet in boosting accuracy and sensitivity, confirming its state-of-the-art performance in medical image segmentation.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103031"},"PeriodicalIF":3.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MSFFNet: Multi-stream feature fusion network for underwater image enhancement","authors":"Peng Lin,&nbsp;Zihao Fan,&nbsp;Yafei Wang,&nbsp;Xudong Sun,&nbsp;Yuán-Ruì Yáng,&nbsp;Xianping Fu","doi":"10.1016/j.displa.2025.103023","DOIUrl":"10.1016/j.displa.2025.103023","url":null,"abstract":"<div><div>Deep learning-based image processing methods have achieved remarkable success in improving the quality of underwater images. These methods usually extract features from different receptive fields through downsampling operations, and then enhance underwater images through upsampling operations. However, these operations of downsampling and upsampling inevitably disrupt the relations of neighboring pixels in raw underwater images, leading to the loss of image details. Given this, a multi-stream feature fusion network, dubbed MSFFNet, is proposed to enrich details, correct colors, and enhance contrast of degraded underwater images. In MSFFNet, the multi-stream feature estimation block is carefully constructed, which separately takes original resolution feature maps and low-resolution feature maps as inputs. The multi-stream feature estimation block proficiently preserves the details information of the original underwater image while extracting high-level features. Besides, a coordinate residual block is designed to emphasize valuable features and suppress noises based on position knowledge. A local–global feature fusion block is presented for selectively fusing the complementary multi-scale features. Finally, extensive comparative experiments on real underwater images and synthetic underwater images demonstrate that the proposed MSFFNet has superior performance on underwater image enhancement tasks.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103023"},"PeriodicalIF":3.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MS2CAM: Multi-scale self-cross-attention mechanism-based MRI super-resolution","authors":"Jinbin Hu ,&nbsp;Yanding Qin ,&nbsp;Hongpeng Wang ,&nbsp;Jianda Han","doi":"10.1016/j.displa.2025.103033","DOIUrl":"10.1016/j.displa.2025.103033","url":null,"abstract":"<div><div>In magnetic resonance imaging (MRI), it is challenging to achieve both real-time imaging and high image quality due to its unique imaging modality. Low-resolution (LR) often accompanies real-time MRI, making super-resolution (SR) techniques essential for enhancing image quality in real-time MRI. This paper proposes a <strong>M</strong>ulti-<strong>S</strong>cale <strong>S</strong>elf-<strong>C</strong>ross-<strong>A</strong>ttention <strong>M</strong>echanism (MS²CAM) for MRI SR tasks, where concrete and abstract features are effectively fused to improve SR performance. Our model demonstrates consistent performance improvements of 1–2% over state-of-the-art methods across various degradation scenarios. Visual results also reveal finer detail restoration, verifying MS²CAM’s effectiveness. Extensive experimental results confirm that MS²CAM achieves superior quantitative and visual performance in MRI SR tasks, establishing it as a leading solution in this domain.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103033"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effects of vibrotactile directions and touch methods on human tactile perceptions","authors":"Tzu-Ying Li,&nbsp;Shana Smith","doi":"10.1016/j.displa.2025.103036","DOIUrl":"10.1016/j.displa.2025.103036","url":null,"abstract":"<div><div>In recent years, the utilization of tactile feedback in human–computer interfaces has gained substantial attention. Among various tactile displays, vibrotactile displays are commonly regarded as the most widely used. Nevertheless, there is limited research investigating the impacts of vibration directions and touch methods on human tactile perceptions. This study aims to address this research gap by exploring the impacts of both normal and lateral vibration directions, as well as passive and active touch methods, on human tactile perceptions. Two tactile perception experiments were conducted at frequencies of 150 Hz, 200 Hz, 250 Hz, and 300 Hz. The experimental results show that for the same displacements, lateral vibrations are significantly more perceivable than normal vibrations for both passive and active touches, except at 150 Hz for passive touch. However, the normal vibrotactile perceivable thresholds are significantly lower than those for lateral vibrations for both passive and active methods. This study also surprisingly found that the most sensitive frequency for lateral vibration is around 150 Hz and 200 Hz, which is about 50–100 Hz lower than that for normal vibration. These findings can help us understand how different vibration directions and touch methods affect human tactile perception, which are important factors in designing tactile human–computer interfaces.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103036"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visible light-activated ultra-long orange afterglow phosphor Sr1−x Ga2O4:xCu2+","authors":"Li Hao,&nbsp;Gongchun Zhang,&nbsp;Qingping Wang,&nbsp;Ling Su,&nbsp;Lijuan Feng,&nbsp;Guiquan Jiang","doi":"10.1016/j.displa.2025.103028","DOIUrl":"10.1016/j.displa.2025.103028","url":null,"abstract":"<div><div>Because of both their independence from external light sources and their energy-saving properties, efficient visible light-activated long persistent luminescence (LPL) phosphors are in high demand. Designing and developing such materials, however, remains a significant challenge. This report describes new LPL phosphors doped with transition metal ions (Sr_1−x Ga₂O₄:xCu²⁺), which address the challenge of excitation of red light-emitting LPL phosphors by visible light. Visible light excitation is achieved by adjusting the calcination atmosphere during preparation of the phosphor. When the Cu²⁺ ion doping level is 2 %, the phosphor can be excited by both UV and visible light. Upon excitation by visible light, the main emission peak occurs at approximately 610 nm; this is observed as orange light, with an afterglow duration of over 11 h. Investigation of the emission spectra after different delay times, together with the photoluminescence and thermoluminescence spectra, revealed a mechanism that involves trapping and de-trapping of electrons. The unique long afterglow and excitation properties, together with the emission characteristics of SrGa₂O₄:0.02Cu²⁺, are particularly suited for applications such as night time signage and dynamic anti-counterfeiting. This research provides new directions for the design of visible light-activated LPL phosphors.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103028"},"PeriodicalIF":3.7,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying the impact of night-shift display modes on evening melatonin production","authors":"Jiawen Mao ,&nbsp;Yingying Huang ,&nbsp;Mingyuan Zhao ,&nbsp;Feng Zhang ,&nbsp;Xin Li ,&nbsp;Qi Dai","doi":"10.1016/j.displa.2025.103027","DOIUrl":"10.1016/j.displa.2025.103027","url":null,"abstract":"<div><div>The use of self-emitting devices in the evening can significantly suppress melatonin secretion, leading to sleep onset delays and circadian disruption. To minimize these undesirable effects, various night-shift display modes have been developed. In this study, we conducted a human factor experiment to investigate the effectiveness of night-shift modes in maintaining evening melatonin production. The study adopted four different night-shift modes and a normal mode for smartphones, which were applied during the three hours before bedtime. The four different night-shift modes employed constant and dynamically reduced correlated color temperatures (CCTs) and luminance levels. Under modes with constant low luminance and CCTs (leading to low melanopic lux), participants had significantly higher melatonin production than those in the normal mode (with high melanopic lux). This result indicates that a reduction in melanopic lux is effective in mitigating the negative effect of display light on evening melatonin production. Regarding the dynamic modes, despite achieving lower melanopic lux levels before sleep, they exhibited relatively high melanopic lux during the early hours of the experiment. Thus, it is necessary to quantify the cumulative time effects of melanopic lux over various periods when evaluating its impact on melatonin production. It was found that the cumulative Melanopic Equivalent Daylight Illuminance (<em>ʃ</em> m-EDI <em>dt</em>) over two hours before bedtime could be an effective metric, which applies to both dynamic and static display modes. Based on the metric, a value below 35 lx·h in the evening is considered effective in reducing the attenuation of melatonin production.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103027"},"PeriodicalIF":3.7,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The interaction efficiency of different visual areas on a virtual reality interaction space: Standing versus sitting posture","authors":"Jutao Li ,&nbsp;Jingxuan Yuan ,&nbsp;Yanqun Huang ,&nbsp;Xiaotian Liang ,&nbsp;Xueqin Huang ,&nbsp;Jian Zhang","doi":"10.1016/j.displa.2025.103025","DOIUrl":"10.1016/j.displa.2025.103025","url":null,"abstract":"<div><div>User posture and visual area can impact searching-selecting efficiency, thereby influencing interaction efficiency. Virtual Reality (VR) devices extend the traditional two-dimensional interface to a three-dimensional interaction space, requiring users to alter their body postures when using them. This study compared the searching-selecting efficiency of different postures (standing and sitting) and visual areas in a VR environment. An experiment measured thirty-five participants’ searching and selecting times for targets under different conditions. A two-way analysis of variance (ANOVA) indicated that the interaction efficiency was generally higher for participants in a sitting posture than in a standing posture. Participants spent less time searching for left side targets than in other visual areas. However, the interaction effect between posture and visual area was not significant. These results suggest that posture and visual areas respectively influence searching-selecting efficiency in VR environments. These findings could provide insights for VR developers to enhance interaction design, particularly interface design, for different user postures, thus supporting interaction efficiency and user experience.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103025"},"PeriodicalIF":3.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Opto-mechanical design of Fourier transform spectral polarization imaging system based on dual Wollaston prisms","authors":"Jingping Zhu,&nbsp;Xiaofang Liu,&nbsp;Angze Li,&nbsp;Yue Liu,&nbsp;Xun Hou","doi":"10.1016/j.displa.2025.103026","DOIUrl":"10.1016/j.displa.2025.103026","url":null,"abstract":"<div><div>The integration of polarization and spectral imaging, which exploits the principle of spectral interference, has long been a subject of extensive research. However, existing literature lacks comprehensive discussions on the opto-mechanical design of Fourier transform spectral polarization imaging systems (FTSPIS) employing dual Wollaston prisms (DWP). We proposing a novel opto-mechanical design strategy for FTSPIS based on DWP. Specifically, the FTSPIS system is divided into three independent modules: telescopic objective lens with phase modulation module (PMM), eyepiece and splitting system with DWP, and secondary imaging system. For each module, a detailed optimization design process is presented, with special emphasis on the optical effects produced by each module and their compatibility with one another. A practical design instance is provided to illustrate the feasibility of constructing a visible-spectrum FTSPIS that can achieve a full field of view (FOV) of ± 5°. The effectiveness of the proposed design is verified through simulation analysis of interference patterns and demodulation. An elaboration on the mechanical structures for each module is also provided. These multi-degree-of-freedom adjustment capabilities enable precise control of the system’s performance, thus ensuring that the desired optical results can be achieved.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103026"},"PeriodicalIF":3.7,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Power integrated driver circuits with multiple outputs based on Thin-Film transistors for mobile micro Light-Emitting diode displays","authors":"Ye-Rim Jeong ,&nbsp;Eun Kyo Jung ,&nbsp;Kook Chul Moon ,&nbsp;Hwarim Im ,&nbsp;Yong-Sang Kim","doi":"10.1016/j.displa.2025.103022","DOIUrl":"10.1016/j.displa.2025.103022","url":null,"abstract":"<div><div>This article proposes low-power integrated driver circuits based on low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) for small and medium-sized mobile micro light-emitting diode (μLED) displays. Two integrated driver circuits can output four signals to operate the μLED pixel circuit: the integrated scan driver outputs two scan signals, and the integrated emission driver outputs an emission signal and a sweep signal. Moreover, driver circuits are designed to enable the always-on-display (AOD) mode, which consumes less power than the normal mode. Compared to the normal mode, the proposed circuits do not output unnecessary signals in the AOD mode, reducing power consumption by 38.0 and 29.6% in the integrated scan and emission circuits. In addition, compared to the gate driver circuits with a single output signal. The proposed integrated scan and emission driver circuits reduce power consumption by 16.6 (25.2) and 42.5 (51.3)% in the normal (AOD) mode, respectively, by sharing the control unit for multiple outputs. We also fabricated the proposed driver circuits and verified that the proposed circuits successfully output multiple signals for mobile μLED pixel circuits.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103022"},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An AI-driven framework for perceived display spectra: The effects of dimming, observer age, and viewing distance","authors":"N. Senyer ,&nbsp;D. Durmus","doi":"10.1016/j.displa.2025.103024","DOIUrl":"10.1016/j.displa.2025.103024","url":null,"abstract":"<div><div>Displays have become ubiquitous in modern society, serving as pervasive light sources that exert visual and non-visual effects on human physiology and behavior. Despite their widespread use and impact, a universal framework for characterizing perceived display light output across various viewing conditions still needs to be developed. This study introduces a novel, AI-driven framework for comprehensive perceived display light output characterization, accounting for the effects of observer age, viewing distance, and display dimming. The framework employs a deep neural network (DNN) trained on an extensive dataset of measured display spectra to predict spectral power distributions (SPDs) from RGB inputs. To simulate real-world scenarios, the DNN-predicted SPDs were transformed to account for viewing distance (36 cm–71 cm), display dimming (0–100 %), and observer age (1–100 years). The initial model achieved high accuracy (<em>R</em>2_avg = 0.99), maintaining robust performance even for challenging cases (<em>R</em>² &gt; 0.94). Results show high accuracy in predicting photometric, colorimetric, and circadian measures. Future research will incorporate other parameters to the proposed framework.</div></div>","PeriodicalId":50570,"journal":{"name":"Displays","volume":"88 ","pages":"Article 103024"},"PeriodicalIF":3.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}