Optica Applicata最新文献_第5页

Optical design of a short-wave infrared coded aperture snapshot spectral imager based on Offner–Wynne imaging spectrometer 基于Offner-Wynne成像光谱仪的短波红外编码孔径快照光谱成像仪的光学设计

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220201

Chong Song, Liang Zhou, Zhaohui Liu, Kai Jiang, Kai Liu

引用次数: 0

Mid-infrared polarization beam splitter based on square/circular hybrid air holes with wide bandwidth and ultrashort length 基于宽带宽、超短长度的方/圆混合空气孔的中红外偏振分束器

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220302

Guang-Ming Zheng

引用次数: 0

Asymmetric double image encryption, compression and watermarking scheme based on orthogonal-triangular decomposition with column pivoting 基于柱旋转的正交三角分解的非对称双图像加密、压缩和水印方案

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220210

S. Anjana, Pankaj Rakheja, Akash Yadav, Phool Singh, H. Singh

引用次数: 3

Simultaneous intensity projection for projector response computation with application to an active radiometric calibration 投影响应计算的同时强度投影及其在主动辐射定标中的应用

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220404

P. Filio-Aguilar, L. López-García, J. Rueda-Paz, M. Ávila-Aoki

引用次数: 0

Fully negative near-zero ultra-flat dispersion photonic crystal fibers in E+S+C+L band E+S+C+L波段全负近零超平色散光子晶体光纤

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220410

Yucheng Mao, Yiwu Ma, Ying Huang, Hua Yang

引用次数: 0

Polarization multiplexed bit data recording to submicron-particles-arrayed optical storage 偏振复用位数据记录到亚微米粒子阵列光存储

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220105

Daiki Okuzono, C. Egami

引用次数: 0

Interferogram blind denoising using deep residual learning for phase-shifting interferometry 基于深度残差学习的移相干涉图盲去噪

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220108

Xiaoqing Xu, Ming Xie, Song Chen, Ying Ji, Yawei Wang

引用次数: 0

Image encryption algorithm based on rear-mountedphase mask and random decomposition 基于后置相位掩模和随机分解的图像加密算法

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220204

S. Yadav, H. Singh

{"title":"Image encryption algorithm based on rear-mountedphase mask and random decomposition","authors":"S. Yadav, H. Singh","doi":"10.37190/oa220204","DOIUrl":"https://doi.org/10.37190/oa220204","url":null,"abstract":"To escalate the image encryption a new method has been devised which includes double random phase encoding (DRPE) using rear phase masking and random decomposition (RD) technique stranded on fractional Fourier transform. Here, asymmetric cryptographic system is developed in fractional Fourier transform (FrFT) mode using two random phase masks (RPM) and a rear mounted phase mask. In the projected scheme a colored image is decomposed into R, G and B channels. The amplitude of each channel is normalized, phase encoded and modulated using RPM. The modulated R, G and B channels of the colored image are individually transformed using FrFT to produce corresponding encrypted image. The proposed scheme is authorized on grayscale image also. The norm behind the development of the suggested scheme has been elaborated by carrying out cryptanalysis on system based on the RD. The method helps in escalations of the protection of double random phase encoding by cumulating the key length and the parameter amount, so that it vigorously can be used against various attacks. The forte of the suggested cryptographic system was verified using simulations with MATLAB 7.9.0 (R2008a). The efficiency of the suggested scheme includes the analysis using singular value decomposition (SVD), histogram and correlation coefficient.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70014565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Double-image encryption scheme based on the phase-truncated multiple-parameter Fresnel transform 基于相位截断多参数菲涅耳变换的双图像加密方案

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220202

Ling Zhou, _, Hang Zhou, Yan Ma, Nan-Run Zhou

引用次数: 2

Selected visual parameters related to the working conditions of musicians 选择与音乐家工作条件相关的视觉参数

IF 0.6 4区物理与天体物理

Optica Applicata Pub Date : 2022-01-01 DOI: 10.37190/oa220103

Paulina Pyżalska, A. Głowacka-Sobotta, T. Matthews‑Brzozowska, B. Miśkowiak

{"title":"Selected visual parameters related to the working conditions of musicians","authors":"Paulina Pyżalska, A. Głowacka-Sobotta, T. Matthews‑Brzozowska, B. Miśkowiak","doi":"10.37190/oa220103","DOIUrl":"https://doi.org/10.37190/oa220103","url":null,"abstract":"Professional musicians are required to practice playing instruments for long hours, which often exerts significant impact on their health. Attention should be given to the specificity of playing each instrument, including uncomfortable and sustained body position and repetitive movements causing long-term strain of certain parts of the body. The aim of this study was to evaluate the impact of long-term playing wind and string instruments on the visual system. Ninety male and female subjects aged 15 to 30 years were included in the study and divided into two groups: musicians (Msc) and non-musicians (nMsc). Significantly less subjects in the Msc group had properly corrected vision, wore optical prescription recommended by an ophthalmologist/optometrist, and/or underwent any eye examination at all in their lifetime, even though more subjects in this group experienced certain asthenopic symptoms. Also, accommodative amplitude got statistically worse under dim illumination conditions, accommodative facility was significantly different between musicians and non-musicians, although there were no differences between the groups when tested in bright illumination. None of the music stands used by the study subjects met the respective standards concerning uniform illumination rates. Playing string and wind instruments is a challenge for the visual system due to the forced body and head positions, and asymmetry between the visual plane and the plane of regard as well as non-uniform illumination in the working environment. However, conditions such as correct working distance and proper tilt of the music stand may be beneficial to the visual system. It is the role of optometrists to properly educate their patients about the importance of appropriate vision correction, especially in dim light and under adverse working conditions and to communicate the impact of such conditions on the visual system.","PeriodicalId":19589,"journal":{"name":"Optica Applicata","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70014693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0