tangchen@tju.edu.cn
信息与通信工程
教授
教授
高损伤容限型激光焊接机身壁板力学参数反演与承载能力研究

---

图像滤波方法研究

---

双光路三维高速显微散斑干涉系统,信息提取新技术及应用

---

动态电子散斑干涉相位提取的高性能方法研究及应用

---

精细积分多步法及在非线性微分方程...

---

间接费_国家自然基金

---

基于图像识别的新一代天气雷达电磁干扰回波的质量控制方法研究

---

光测力学软件代码开发及测试

---

“XXXXX“技术开发_科研项目S

---

科研发展金

---

基于SPM 的微纳米尺度力学特性测量
基于二维离散余弦变换和二维混沌映射图像加密方法

---

单透镜彩色图像加密系统

---

基于经验曲波变换的条纹投影轮廓术的形貌测量方法

---

含有非局域数据保真项的图像分解滤波方法

---

二维超混沌结合菲涅耳变换单透镜光学图像加密方法

---

线性正则变换和混沌双随机相位编码双图像加密方法

---

基于分光镜的双光路三维散斑干涉系统

---

离散小波变换混沌双随机相位编码单通道彩图加密方法

---

基于支持向量机的天气雷达电磁干扰回波识别方法

---

基于完全三叉树结构的多幅彩色图像加密方法

---

用于条纹投影图像的方向偏微分方程滤波方法

---

结合二维混沌和约束优化算法的级联菲涅耳全息加密系统
本发明属于信息安全和光信息处理技术领域，为增大密钥空间，增大破译难度，从而提高加密图像的质量，并且加密方法简单易行，便于操作。本发明采用的技术方案是，基于二维离散余弦变换和二维混沌映射图像加密方法。

---

本发明属于信息安全和光信息处理技术领域，为实现从光学系统上解决第一块随机相位掩膜在图像为实值时不能起到密钥作用的问题，以及从密钥生成方法上解决密钥管理和传输、密钥更新的问题。本发明采用的技术方案是，单透镜彩色图像加密系统。

---

本发明属于光学图像处理和模式识别领域，为实现 FPP 条纹图的背景移除，方法抗噪声能力更强，计算时间更短。本发明采用的技术方案是，基于经验曲波变换的条纹投影轮廓术的形貌测量方法，步骤是，先通过经验曲波变换实现频域内对条纹图的傅里叶频谱分割，再通过选择合适的滤波器滤除噪声和背景部分，实现 FPP 条纹图的背景移除。

---

本发明属于光学检测和光信息处理技术领域，为改进图像分解算法中的数据保真项，提高图像分解算法的性能，提升图像分解算法去噪性能。本发明采用的技术方案是，含有非局域数据保真项的图像分解滤波方法，根据非局域均值滤波模型、非局域全变分滤波模型、适应性正则非局域均值滤波模型，构造非局域数据保真项，并分别与TV Hilbert？？L2 模型、 TV G？？Shearlet 模型结合，进行带有数据保真项的图像分解滤波。

---

本发明涉及图像信息安全和光信息处理技术领域，为实现两块随机相位掩模都可以作为加解密过程中的主密钥；并能够有效抵抗已知明文攻击和选择明文攻击，且从密钥生成上解决密钥管理和传输问题。为此，本发明：二维超混沌结合菲涅耳变换单透镜光学图像加密方法。

---

本发明涉及信息安全和光信息处理技术领域，为提出新的图像加密方法，实现两幅图像的同时加密。该发明方法可同时加密两幅灰度图像，且具有较大的密钥空间及较高的安全性；本发明是，线性正则变换和混沌双随机相位编码双图像加密方法。

---

本实用新型公开了一种基于分光镜的双光路三维散斑干涉系统，该系统包括激光器、第一分光镜、第二分光镜、第三分光镜、第四分光镜、第五分光镜、第一全反镜、第二全反镜、第三全反镜、第四全反镜、第一扩束镜、第二扩束镜、放大系统以及 CCD 摄像机。

---

本发明涉及信息安全和光信息处理技术领域，为实现彩色图像的单通道加密，大大降低加密系统的复杂性；大大增大密钥空间，提升系统的安全性；使得对随机相位板密钥的管理和传输变得非常方便，可以有效抵抗常见的密码学攻击。为此，本发明采用的技术方案是，离散小波变换混沌双随机相位编码单通道彩图加密方法。

---

本发明涉及图像信息处理技术，为实现充分利用三类电磁干扰回波的不同特征及 SVM 方法的优越性，可同时识别三类电磁干扰回波，提高电磁干扰回波识别的准确率。

---

本发明涉及信息安全和光信息处理技术领域，为提出一种新的图像加密方法，该方法可以有效抵抗已知明文攻击、选择明文攻击等多种密码攻击。此外，该方法还具有较强的抗暴力攻击、统计攻击、噪声攻击和剪切攻击等的能力。本发明采取的技术方案是，基于完全三叉树结构的多幅彩色图像加密方法，在基于完全三叉树结构的加密系统中，加密模块作为完全三叉树的分支节点和根节点，彩色图像的三个颜色通道作为连接分支节点的叶子节点，不同的彩色图像对应着不同的加密路径和主密钥，且由此具有不同的解密路径。

---

本发明属于光学检测和图像处理技术领域，为提出对数值求解偏微分方程提供新方法，使得偏微分方程滤波效果得到提升。本发明采用的技术方案是，用于条纹投影图像的方向偏微分方程滤波方法。

---

本实用新型公开了一种结合二维混沌和约束优化算法的级联菲涅耳全息加密系统，包括沿水平光路依次设置的激光器、空间滤波器、透镜、第一分束镜和第一反射镜，所述第一分束镜下端设置有第二反射镜，所述第一反射镜下端设置有第二分束镜，所述第二反射镜和第二分束镜之间设置有混沌随机相位掩膜，所述第二分束镜另一侧设置有电荷耦合器件相机。本实用新型主要从光学系统上解决了加密图像为复数形式不便直接记录的问题，从恢复算法上解决了不能加密动态视频的问题，以及从密钥生成方法上解决了密钥管理和传输的问题。
A shape-preserving oriented partial differential equation based on a new fidelity term for electronic speckle pattern interfe

---

基于多尺度Ｒｅｔｉｎｅｘ算法的光干涉条纹图像增强

---

基于矢量分解和混沌随机相位掩模的图像加密

---

基于剪切波变换的改进全变分散斑去噪方法

---

基于全卷积神经网络的多尺度视网膜血管分割

---

基于变分图像分解的电子散斑干涉信息提取方法

---

Texture preservation and speckle reduction in poor optical coherence tomography using the convolutional neural network

---

Generalized optical encryption framework based on Shearlets for medical image

---

Optical asymmetric cryptosystem for multi-image in cyan magenta-yellow-black color space

---

Image encryption algorithm based on gradient decomposition and improved logistic map

---

Optical image encryption based on biometric keys and singular value decomposition

---

Speckle removal in variable density ESPI fringe patterns with TGV-Hilbert-Shearlet algorithm

---

Skeleton extraction and inpainting from poor, broken ESPI fringe with an M-net convolutional neural network

---

Variational image decomposition for estimation of fringe orientation and density from electronic speckle pattern interferomet

---

Cascaded Fresnel holographic image encryption scheme based on a constrained optimization algorithm and Henon map

---

Image decomposition model Shearlet-Hilbert-L2 with better performance for denoising in ESPI fringe pattern

---

The oriented bilateral filtering method for removal of speckle noise in electronic speckle pattern interferometry fringes.

---

Binarization of ESPI fringe patterns based on local entropy.

---

Batch denoising of ESPI fringe patterns based on convolutional neural network.

---

Texture preservation and speckle reduction in optical coherence tomography using the shearlet-based total variation algorithm

---

Fuzzy c-means clustering based segmentation and the filtering method for discontinuous ESPI fringe patterns.

---

Weighted least-squares phase-unwrapping algorithm based on the orientation coherence for discontinuous optical phase patterns

---

Fully automated extraction of the fringe skeletons in dynamic electronic speckle pattern interferometry using a U-Net convolu

---

Greyscale image encoding and watermarking based on optical asymmetric cryptography and variational image decomposition.

---

Accurate and efficient extraction of fringe orientation from the poor-quality ESPI fringe pattern with a convolutional neural

---

Optical encryption scheme for multiple color images using complete trinary tree structure

---

Adaptive oriented PDEs filtering methods based on new controlling speed function for discontinuous optical fringe patterns

---

Optical single-channel color image cryptosystem based on vector decomposition and three-dimensional chaotic maps

---

Image decomposition and denoising based on Shearlet and nonlocal data fidelity term

---

A clustering framework based on FCM and texture features for denoising ESPI fringe patterns with variable density

---

Binarization of optical fringe patterns with intensity inhomogeneities based on modified FCM algorithm

---

Selective retinex enhancement based on the clustering algorithm and BM3D for OCT images

---

BM3D-based total variation algorithm for speckle removal with structure-preserving in OCT images

---

Single-lens Fourier-transform-based optical color image encryption using dual two-dimensional chaotic maps and the Fresnel tr

---

Optical colour image watermarking based on phase-truncated linear canonical transform and image decomposition

---

Combination of oriented partial differential equation and shearlet transform for denoising in electronic speckle pattern inte

---

General filtering method for electronic speckle pattern interferometry fringe images with various densities based on variatio

---

Optical image encryption based on mixed chaotic maps and single shot digital holography

---

Fourier-transform-based optical colorimage encryption using dual two-dimensional chaotic maps and the Fresnel transform

---

Gradient vector fields based on variational image decomposition for skeletonization of electronic speckle pattern interferome

---

Combination of oriented partial differential equation and shearlet transform for denoising in electronic speckle pattern inte

---

Shearlet transform for phase extraction in fringe projection profilometry with edges discontinuity

---

Two parabolic–hyperbolic oriented partial differential equations for denoising in electronic speckle

---

General construction of transform-domain filters, filtering methods for electronic speckle pattern interferometry, and compa

---

A 3D shape retrieval method for orthogonal fringe projection based on a combination of variational image decomposition and v

---

Image/video encryption using single shot digital holography

---

An efficient method for salt-and-pepper noise removal based onshearlet transform and noise detection

---

Exponential total variation model for noise removal,its numerical algorithms and applications

---

Image decomposition model BL-Hilbert-L2 for dynamic thermal measurements of the printed circuit board with a chip by ESPI

---

Switching degenerate diffusion PDE filter based on impulselike probability for universal impulse noise removal

---

Phase retrieval from single frame projection fringe pattern with variational image decomposition

---

ESPI filtering method based on radial basis function

---

Random-valued impulse noise removal using fuzzy weighted non-local means

---

Numerous possible oriented partial differential equations and investigation of their performance for optical interferometry f

---

The new second-order single oriented partial differential equations for optical interferometry fringes with high density

---

Application of two oriented partial, differential equation filtering models on speckle fringes with poor quality and their nu

---

Variational image decomposition for automatic background and noise removal of fringe patterns

---

Comparison on performance of some representative and recent filtering methods in electronic speckle pattern interferometry

---

Overview of anisotropic filtering methods based on partial differential equations for electronic speckle pattern interferomet

---

A new filter for the removal of random-valued impulse noise from highly corrupted images

---

Electronic speckle pattern interferometry for fracture expansion in nuclear graphite based on PDE image processing methods

---

A TVSOOPDE model for denoising fringe pattern in electronic speckle pattern interferometry

---

The sub-pixel searching algorithm based on gradient in digital speckle correlation method

---

Pde(ode)-based image processing methods for optical interferometry fringe

---

A new fourth-order oriented partial-differential equations for filtering in optical image

---

Fingerprint enhancement using the second-order oriented partial differential equation

---

Localized Fourier transform filter for noise removal in electronic speckle pattern interferometry wrapped phase patterns

---

PDE-Based Random-Valued Impulse Noise Removal Based on New Class of Controlling Functions

---

An efficient decision-based and edge-preserving method for salt-and-pepper noise removal，Pattern Recognition Letters

---

New fourth-order partial differential equations for filtering in electronic speckle pattern interferometry fringes

---

The orient-couple partial differential equations for filtering in wrapped phase patterns,

---

Contrast enhancement for electronic speckle pattern interferometry fringes by the differential equation enhancement method

---

Second-order oriented partial-differential equations for denoising inelectronic-speckle-pattern interferometry fringes

---

Displacement field analysis based on the combination digital speckle correlation method with radial basis function interpolat

---

The arbitrary order implicit multistep schemes of exponential fitting and their Applications

---

Performance evaluation of partial differential equation models in electronic speckle pattern interferometry and δ-mollificati

---

tangent least-squares fitting filtering method for electrical speckle pattern interferometry phase fringe

---

The various order explicit multistep exponential fitting for systems of ordinary differential equations

---

High-order predictor-corrector of exponential fitting for the N-body problems

---

A new neural network model for medical color images segmentation

---

Estimation of fringe orientation for optical fringe patterns with poor quality based on Fourier transform

---

Denoising in electronic speckle pattern interferometry fringes by the filtering method based on partial differential equation

---

Denoising by coupled partial differential equations and extracting phase by backpropagation neural networks for electronic

---

Oriented couple gradient vector fields for skeletonization of gray-scale optical fringe patterns with high density，Applied Op

---

The oriented spatial filter masks for electronic speckle pattern interferometry phase patterns

---

The fringe patterns with high contrast in electronic speckle pattern interferometry by Monte Carlo Markov chain techniques

---

Nearly preprocessing-free method for skeletonization of gray-scale electronic speckle pattern interferometry fringe patterns

---

Noise reduction in electronic speckle pattern interferometry fringes by fourth-order Partial Differential Equations