A5058725895- Optical Polarization and Ellipsometry
- Leaf Properties and Growth Measurement
- Spectroscopy and Chemometric Analyses
- Spectroscopy Techniques in Biomedical and Chemical Research
- Textile materials and evaluations
- melanin and skin pigmentation
- Bayesian Methods and Mixture Models
- Domain Adaptation and Few-Shot Learning
- Anomaly Detection Techniques and Applications
- Advanced Image and Video Retrieval Techniques
- Fault Detection and Control Systems
- Non-Invasive Vital Sign Monitoring
- Surface Roughness and Optical Measurements
- Image Retrieval and Classification Techniques
- Advanced Clustering Algorithms Research
- Advanced Chemical Sensor Technologies
- Artificial Immune Systems Applications
- Biosensors and Analytical Detection
- Advanced Neural Network Applications
- Advancements in Transdermal Drug Delivery
- Skin Protection and Aging
- Optical measurement and interference techniques
Tsinghua University
2021-2023
University Town of Shenzhen
2022
Tsinghua–Berkeley Shenzhen Institute
2022
The characterization and evaluation of skin tissue structures are crucial for dermatological applications. Recently, Mueller matrix polarimetry second harmonic generation microscopy have been widely used in imaging due to their unique advantages. However, the features layered too complicated use a single modality achieving comprehensive evaluation. In this study, we propose dual-modality method combining quantitative structures. It is demonstrated that can well divide mouse tail specimens'...
In this study, we propose a quantitative technique to analyze and evaluate microstructures of skin hair follicles based on Mueller Matrix transmission microscopy. We measure the matrix polar decomposition (MMPD) parameter images reveal characteristic linear birefringence distribution induced by in mouse tissue samples. The results indicate that matrix-derived parameters can be used location structural integrity follicles. For accurate follicle identification evaluations, use image...
In this paper, we propose a smartphone-based biosensor for detecting human total hemoglobin concentration in vivo with high accuracy. Compared to the existing biosensors used measure concentration, sensor utilizes camera, memory, and computing power of phone. Thus, cost is largely reduced. sensors, developed highly integrated multi-wavelength LED module specially designed phone fixture reduce spatial errors motion artifacts, respectively. addition, embedded new algorithm into our improve...
Mueller matrix polarimetry is widely used in biomedical studies and applications, for it can provide abundant microstructural information about tissues. Recently, several methods have been proposed to decompose the into groups of parameters related specific optical properties which be reveal tissue samples more clearly quantitatively. In this study, we thoroughly compare differences among derived from polar decomposition (MMPD) transformation (MMT), are two popular while applying them on...
The Mueller matrix contains abundant micro- and even nanostructural information of media. Especially, it can be used as a powerful tool to characterize anisotropic structures quantitatively, such the particle size, density, orientation fibers in sample. Compared with unpolarized microscopic imaging techniques, microscopy also obtain some essential structural about sample from derived parameters images at low resolution. Here, analyze comprehensive effects resolution on polarization...
Conventional model quantization methods use a fixed scheme to different data samples, which ignores the inherent"recognition difficulty" differences between various samples. We propose feed samples with varying schemes achieve data-dependent dynamic inference, at fine-grained layer level. However, enabling this adaptive inference changeable layer-wise is challenging because combination of bit-widths and layers growing exponentially, making it extremely difficult train single in such vast...
Time-division framework is commonly used in Mueller matrix polarimeters (MPs), which takes extra numbers of images at the same position an acquisition sequence. In this Letter, we utilize measurement redundancy to raise a unique loss function can reflect and evaluate degree mis-registration (MM) polarimetric images. Further, demonstrate that constant-step rotating MPs have self-registration free from systematic errors. Based on property, propose framework, able apply efficient sub-pixel...
Water content of stratum corneum has one the most important biological effects on physiological function skin. Measuring and adjusting water can be helpful to understand state skin delay aging. However, existing analyzers have contact results may affected by personal usage habits prominently. Mueller matrix polarimetry is sensitive structural features tissues. Parameters derived from provide microstructural information quantitatively, such as sizes scatterers, distribution collagen fibers so...
Here we introduce an image fusion method based on color spaces to combine different Mueller matrix derived parameters provide multi-dimensional structural information pixel by in a single polarization staining image. Then, order quantitatively analyze the texture characteristics of images for structures, Tamura processing and gray level co-occurrence (GLCM) methods are adopted various evaluation indices after segmentations. The experimental results confirm that provided can be used accurate...