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Double image encryption based on a hybrid phase-truncation scheme 基于混合相位截断方案的双重图像加密
IF 1.3 4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-12-18 DOI: 10.1080/09500340.2023.2295372
Guangyu Luan, Chenggen Quan
We propose a double image encryption approach based on a hybrid phase-truncation scheme. This approach is realized by spatial and Fresnel encoding, where two plaintexts are encrypted by a random am...
我们提出了一种基于混合相位截断方案的双图像加密方法。这种方法是通过空间和菲涅尔编码实现的,其中两个明文通过一个随机的...
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引用次数: 0
Robust binary fringe pattern optimization for optical three-dimensional shape measurement 用于光学三维形状测量的稳健二元条纹图案优化
IF 1.3 4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-12-18 DOI: 10.1080/09500340.2023.2294809
Feng Lu, Jikun Yang
Current studies show that binary fringe patterns can be optimized in the phase or intensity domain. The problem with the former is the poor sensitivity to defocusing levels and the problem with the...
目前的研究表明,二元条纹模式可以在相位域或强度域进行优化。前者的问题是对散焦水平的灵敏度较低,而后者的问题是对散焦水平的灵敏度较高。
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引用次数: 0
Optical multi-image encryption scheme with chaotic apertured quaternion fractional Mellin transform 采用混沌光圈四元分数梅林变换的光学多图像加密方案
IF 1.3 4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-12-16 DOI: 10.1080/09500340.2023.2294818
Jing-Yi Dai, Nan-Run Zhou
To enhance the encryption quality and the transmission efficiency, an optical compression and encryption scheme for multiple images based on chaotic apertured quaternion fractional Mellin transform...
为了提高加密质量和传输效率,一种基于混沌孔化四元分数梅林变换的多图像光学压缩和加密方案...
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引用次数: 0
Unambiguous correct discrimination of real quantum states 毫不含糊地正确区分真实量子态
IF 1.3 4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-12-16 DOI: 10.1080/09500340.2023.2294435
Shi-Jun Zhang, Wen-Hai Zhang
We investigate the unambiguous correct discrimination strategy of a set of linearly independent equidistant real quantum states and three sets of three linearly independent states. The measurement ...
我们研究了一组线性独立等距实量子态和三组线性独立实量子态的无歧义正确判别策略。测量 ...
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引用次数: 0
Method of unwrapped phase error correction in phase-measuring profilometry based on adaptive local window 基于自适应局部窗口的相位测量轮廓测量中的无包相位误差校正方法
IF 1.3 4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-12-15 DOI: 10.1080/09500340.2023.2294436
Lang Zou, Chen Luo, Jiale Sun, Yijun Zhou
Phase measurement profilometry (PMP) is widely used to reconstruct three-dimensional (3D) shape of objects. However, errors are introduced during standard phase unwrapping process, which considerab...
相位测量轮廓仪(PMP)被广泛用于重建物体的三维(3D)形状。然而,在标准相位解包过程中会产生误差,这就需要考虑...
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引用次数: 0
Numerical investigation on Coulomb impact on bouquetlike photoelectron momentum distributions 库仑效应对束状光电子动量分布的数值研究
IF 1.3 4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-12-15 DOI: 10.1080/09500340.2023.2294437
Shenghua Zhang, Guizhong Zhang, Kecheng Liu, Wei Shi, Jianquan Yao
Deploying the strong-field approximation and the saddle point methods, we numerically simulate the Coulomb impact on the bouquetlike photoelectron momentum distributions (PMDs) induced by intense l...
我们采用强场近似和鞍点方法,数值模拟了强烈光束对束状光电子动量分布(PMDs)的库仑影响。
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引用次数: 0
Similarity-sequenced multi-view discriminant feature extraction for image recognition 基于相似性序列的图像识别多视图判别特征提取
4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-10-28 DOI: 10.1080/09500340.2023.2273552
Shuzhi Su, Kaiyu Zhang, Yanmin Zhu, Maoyan Zhang, Shexiang Jiang
Traditional multi-view feature extraction methods based on manifold learning frequently overlook the similarity sequence between samples, failing to capture the intrinsic manifold structure of raw nonlinear samples and restricting the recognition performance of multi-view learning. In this paper, we propose a novel similarity-sequenced multi-view discriminant feature extraction method, called Similarity -sequenced Multi-view Discriminant Correlation Analysis (SMDCA), which explicitly considers the sample sequences based on similarity. The method constructs similarity-sequenced discriminant scatters for preserving the sequence structure of within-class samples and develops between-class correlations with the similarity-sequence structure information for further constraining intrinsic manifold structure of cross-view samples. SMDCA can also simultaneously extract low-dimensional sequence features with well-discriminative power from multiple views. Extensive experiments exhibit that SMDCA can provide higher recognition accuracy and stronger robustness in image recognition tasks.
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引用次数: 0
Robust noise hybrid active contour model for infrared image segmentation using orientation column filters 基于方向柱滤波器的红外图像分割鲁棒噪声混合主动轮廓模型
4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-05-04 DOI: 10.1080/09500340.2023.2273564
He Zhang, Weixian Qian, Minjie Wan, Kaimin Zhang, Fan Wang, Xiaofang Kong, Qian Chen, Dongming Lu
AbstractInfrared (IR) image segmentation plays an important role in many applications of night vision, including pedestrian detection, security monitoring, etc. However, the precision is constrained by edge blur and noise interference from the original infrared imaging. In order to achieve robust segmentation results under noise interference, a hybrid active contour model for the segmentation of targets in images using local feature information and global information is proposed. Based on the concept of orientation columns in the primary visual cortex, orientation column filters are defined, which can effectively extract local feature information with noise robustness. Then a global term with noise robustness is defined, and the adaptive weight matrix is adopted to combine the two to construct a complete signed pressure force (SPF) function. Several experiments demonstrate that the proposed algorithm performs more accurately and robustly on noisy infrared images segmentation compared to typical algorithms.KEYWORDS: Infrared image segmentationactive contour modelorientation column filterssigned pressure force functionadaptive weight matrix Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingNational Natural Science Foundation of China [62001234, 62201260]; Natural Science Foundation of Jiangsu Province [BK20200487]; Fundamental Research Funds for the Central Universities [JSGP202102]; Equipment Pre-research Weapon Industry Application Innovation Project [627010402]; Equipment Pre-research Key Laboratory Fund Project [6142604210501].
摘要红外图像分割在夜视的许多应用中起着重要的作用,包括行人检测、安防监控等。但是,其精度受到原始红外图像边缘模糊和噪声干扰的限制。为了在噪声干扰下获得鲁棒的分割结果,提出了一种利用局部特征信息和全局信息对图像中目标进行分割的混合主动轮廓模型。基于初级视觉皮层中方向列的概念,定义了方向列滤波器,该滤波器能有效提取局部特征信息,具有噪声鲁棒性。然后定义了具有噪声鲁棒性的全局项,并采用自适应权矩阵将二者结合,构造了完全签名压力(SPF)函数。实验结果表明,与传统算法相比,该算法对红外噪声图像的分割更加准确、鲁棒。关键词:红外图像分割主动轮廓模型方向柱滤波器签名压力力函数自适应权重矩阵披露声明作者未报告潜在利益冲突。国家自然科学基金资助项目[62001234,62201260];江苏省自然科学基金[BK20200487];中央高校基本科研业务费专项经费[JSGP202102];装备预研武器工业应用创新项目[627010402];设备预研重点实验室基金项目[6142604210501]。
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引用次数: 0
THz properties of two food additives sodium solution based on microfluidic chips 基于微流控芯片的两种食品添加剂钠溶液太赫兹特性研究
4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-05-04 DOI: 10.1080/09500340.2023.2273563
Bo Peng, Siyu Qian, Boyan Zhang, Qingjun Li, Bo Su, Hailin Cui, Shengbo Zhang, Cunlin Zhang
AbstractThe vibration and rotation energy levels of many molecules are in the terahertz (THz) band, so THz spectroscopy can be used to qualitatively identify substances. However, the THz spectrum of most molecules in aqueous solution is completely different from that of solid molecules, and they have strong absorption characteristics for THz waves. In this study, a microfluidic chip with very low THz wave absorption was designed, and the THz transmission spectra of food-additive sodium hexametaphosphate solution and sodium pyrophosphate solution were measured using THz time domain spectroscopy (THz-TDS). The results show that the THz transmission spectral intensity of the two sodium salt solutions increases with the increase of solution concentration, which is due to the influence of ion hydration process on hydrogen bonds between water molecules and changes the absorption of THz waves by water. This method lays a foundation for further study of the THz characteristics of electrolyte solutions.KEYWORDS: Terahertzmicrofluidic chipTHz-TDS systemsodium salt solutionsodium hexametaphosphatesodium pyrophosphate Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China (NSFC 61575131).
摘要许多分子的振动和旋转能级都在太赫兹(THz)波段,因此太赫兹光谱可以用于定性识别物质。然而,水溶液中大多数分子的太赫兹谱与固体分子的太赫兹谱完全不同,它们对太赫兹波有很强的吸收特性。本研究设计了一种极低太赫兹吸收的微流控芯片,利用太赫兹时域光谱(THz- tds)测量了食品添加剂六偏磷酸钠溶液和焦磷酸钠溶液的太赫兹透射光谱。结果表明,两种钠盐溶液的太赫兹透射光谱强度随溶液浓度的增加而增大,这是由于离子水化过程对水分子间氢键的影响,改变了水对太赫兹波的吸收。该方法为进一步研究电解质溶液的太赫兹特性奠定了基础。关键词:太赫兹微流控芯片thz - tds系统钠盐溶液六偏磷酸钠焦磷酸钠披露声明作者未报告潜在利益冲突。本研究得到国家自然科学基金(NSFC: 61575131)资助。
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引用次数: 0
One-dimensional far-field super-resolution imaging without missing k -space regions 无k空间区域缺失的一维远场超分辨率成像
4区 物理与天体物理 Q4 OPTICS Pub Date : 2023-05-04 DOI: 10.1080/09500340.2023.2273551
Deng Xie
AbstractThe lack of parts of k-space regions will lead to the missing of some spatial frequencies and even generate artificial details in super-resolution imaging. We report a convenient scheme constructed with subwavelength grating supported by a metal–dielectric multilayer to realize super-resolution imaging with the whole k-space but without the increment of measuring complexity.KEYWORDS: Super-resolution imagingmetasurface Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is supported by the Science and Technology Project of Fujian, China [grant number JAT220233], Scientific Research Fund of Fujian University of Technology [grant number GY-Z220194] and the Natural Science Foundation of Fujian Province [grant number 2023J01952].
摘要在超分辨率成像中,缺少部分k空间区域会导致部分空间频率缺失,甚至产生人为细节。本文提出了一种由金属介质多层支撑的亚波长光栅实现全k空间超分辨率成像而不增加测量复杂度的简便方案。关键词:超分辨率成像;超表面;披露声明作者未报告潜在利益冲突。本工作得到福建省科技计划项目[批准号JAT220233]、福建工业大学科研基金[批准号GY-Z220194]和福建省自然科学基金[批准号2023J01952]的资助。
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引用次数: 0
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Journal of Modern Optics
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