Zhijian Zhao

ORCID: 0000-0002-3302-1495
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About
Contact & Profiles
Research Areas
  • Retinal Development and Disorders
  • Photoreceptor and optogenetics research
  • Neural dynamics and brain function
  • Advanced Fluorescence Microscopy Techniques
  • Neuroscience and Neural Engineering
  • Video Surveillance and Tracking Methods
  • Nitric Oxide and Endothelin Effects
  • Anomaly Detection Techniques and Applications
  • Radar Systems and Signal Processing
  • Circadian rhythm and melatonin
  • Fault Detection and Control Systems
  • Visual perception and processing mechanisms
  • Neurological Disease Mechanisms and Treatments
  • CCD and CMOS Imaging Sensors
  • Artificial Intelligence in Healthcare
  • Neurobiology and Insect Physiology Research
  • Advanced SAR Imaging Techniques
  • Video Analysis and Summarization
  • Retinal Imaging and Analysis
  • Cell Image Analysis Techniques
  • Underwater Acoustics Research
  • Advanced Neural Network Applications
  • Neuroscience, Education and Cognitive Function
  • Intelligent Tutoring Systems and Adaptive Learning
  • Magnetic Bearings and Levitation Dynamics

University of Tübingen
2018-2025

Bernstein Center for Computational Neuroscience Tübingen
2018-2024

Inserm
2024

Sorbonne Université
2024

Institut de la Vision
2024

Centre National de la Recherche Scientifique
2024

Nanjing Polytechnic Institute
2023

Naval Aeronautical and Astronautical University
2011-2020

Shaanxi University of Science and Technology
2018

Southeast University
2011

Visual neuroscientists require accurate control of visual stimulation. However, few stimulator solutions simultaneously offer high spatio-temporal resolution and free over the spectra light sources, because they rely on off-the-shelf technology developed for human trichromatic vision. Importantly, consumer displays fail to drive UV-shifted short wavelength-sensitive photoreceptors, which strongly contribute behaviour in many animals, including mice, zebrafish fruit flies. Moreover,...

10.7554/elife.48779 article EN cc-by eLife 2019-09-23

The task of crowd counting in varying density scenes is an extremely difficult challenge due to large scale variations. In this paper, we propose a novel dual path multi-scale fusion network architecture with attention mechanism named SFANet that can perform accurate count estimation as well present high-resolution maps for highly congested scenes. proposed contains two main components: VGG backbone convolutional neural (CNN) the front-end feature map extractor and networks back-end generate...

10.48550/arxiv.1902.01115 preprint EN other-oa arXiv (Cornell University) 2019-01-01

Abstract The retina decomposes visual stimuli into parallel channels that encode different features of the environment. Central to this computation is synaptic processing in a dense layer neuropil, so-called inner plexiform (IPL). Here, types bipolar cells stratifying at distinct depths relay excitatory feedforward drive from photoreceptors amacrine and ganglion cells. Current experimental techniques for studying IPL do not allow imaging entire simultaneously intact tissue. we extend...

10.1038/s41598-020-60214-z article EN cc-by Scientific Reports 2020-03-10

Neuromodulators have major influences on the regulation of neural circuit activity across nervous system. Nitric oxide (NO) has been shown to be a prominent neuromodulator in many circuits and extensively studied retina. Here, it associated with light adaptation, gain control, gap junctional coupling, but its effect retinal output, specifically different types ganglion cells (RGCs), is still poorly understood. In this study, we used two-photon Ca 2+ imaging multi-electrode array (MEA)...

10.7554/elife.98742.3 article EN cc-by eLife 2025-01-09

Although 2-D canonical correlation analysis (2DCCA) has been proposed to reduce the computational complexity while reserving local data structure of image, learned variables 2DCCA are linear combination all original variables, which makes it hard interpret solutions and might have less generality. In this paper, we propose a sparse (S2DCCA) solve drawbacks method apply image feature extraction. The basic idea S2DCCA is impose two lasso penalties on objective function obtain sets projection...

10.1109/lsp.2011.2177259 article EN IEEE Signal Processing Letters 2011-11-23

More and more football fans prefer to watch highlights because it takes too much time the entire game. At same time, many TV stations sports companies need store retrieve fragments of different events in matches. The traditional way is analyze cut match manually. This method consuming process largely depends on personal choice, which results unsecured accuracy. Therefore, it's necessary develop a fast accurate system for automatic summarization analysis matches video. Automatic event...

10.1109/bigdata.2018.8621906 article EN 2021 IEEE International Conference on Big Data (Big Data) 2018-12-01

Neuromodulators have major influences on the regulation of neural circuit activity across nervous system. Nitric oxide (NO) has been shown to be a prominent neuromodulator in many circuits and extensively studied retina. Here, it associated with light adaptation, gain control, gap junctional coupling, but its effect retinal output, specifically different types ganglion cells (RGCs), is still poorly understood. In this study, we used two-photon Ca 2+ imaging multi-electrode array (MEA)...

10.7554/elife.98742 article EN cc-by eLife 2024-06-10

Abstract The retina decomposes visual stimuli into parallel channels that encode different features of the environment. Central to this computation is synaptic processing in a dense and thick layer neuropil, so-called inner plexiform (IPL). Here, types bipolar cells stratifying at distinct depths relay excitatory feedforward drive from photoreceptors amacrine ganglion cells. Current experimental techniques for studying IPL do not allow imaging entire simultaneously intact tissue. we extend...

10.1101/743047 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2019-08-21

Variability, stochastic or otherwise, is a central feature of neural activity. Yet the means by which estimates variation and uncertainty are derived from noisy observations activity often heuristic, with more weight given to numerical convenience than statistical rigour. For two-photon imaging data, composed fundamentally probabilistic streams photon detections, problem particularly acute. Here, we present pipeline for inference analysis using Gaussian Process regression, applied recordings...

10.1371/journal.pcbi.1007205 article EN cc-by PLoS Computational Biology 2019-08-02

Summary Pressures for survival drive sensory circuit adaption to a species’ habitat, making it essential statistically characterise natural scenes. Mice, prominent visual system model, are dichromatic with enhanced sensitivity green and UV. Their environment, however, is rarely considered. Here, we built UV-green camera record footage from mouse habitats. We found chromatic contrast greatly diverge in the upper but not lower field, an environmental difference that may underlie superior...

10.1101/2020.12.08.416172 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2020-12-09

Based on modified rank test, this paper proposes two new nonparametric detectors by using the K-distributed sea clutter model. These are Modified-Rank-based Generalized Sign detector (MRGS) and Mann-Whitney (MRMW). The achieved designing inverse-normal-score functions of statistics. They CFAR (Constant False Alarm Rate) for data with continuous CDF (Cumulative Distribution Function) PDF (Probability Density bing symmetric about zero. performance is analyzed under Swerling II target model...

10.1109/cie-radar.2011.6159909 article EN 2011-10-01

Abstract Visual neuroscientists require accurate control of visual stimulation. However, few stimulator solutions simultaneously offer high spatio-temporal resolution and free over the spectra light sources, because they rely on off-the-shelf technology developed for human trichromatic vision. Importantly, consumer displays fail to drive UV-shifted short wavelength-sensitive photoreceptors, which strongly contribute behaviour in many animals, including mice, zebrafish fruit flies. Moreover,...

10.1101/649566 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2019-05-24

This paper mainly proposed to identify and classify the medical data of cervical cancer using neural network models such as SVM, FNN, KNN so on.The computer recognition algorithm can overcome deficiency that artificial identification tends be affected by cognitive ability, subjective experience fatigue degree.The model trained under various networks with experts' manual marked will obtain a more precise result in process data.

10.2991/ncce-18.2018.93 article EN cc-by-nc Proceedings of the 2018 International Conference on Network, Communication, Computer Engineering (NCCE 2018) 2018-01-01

The micro-motion of a subject induces Doppler frequency modulations around the carrier reflected sensor signals. Recently, it has been proved that sea clutter is significantly variable and surface subjects have their micro-motions influenced by state. micro-Doppler (m-D) signatures can describe refined motion characteristics target. micromotion signal model target established in this paper based on length observation time. Finally, properties are analyzed using real radar data, i.e., X-band...

10.1109/igarss.2016.7729704 article EN 2016-07-01

A novel long-time coherent integration method, i.e., scaling processing and Radon-Fourier transform (SPRFT), is proposed to detect the low-observable manuevering target, which can compensate range Doppler migrations simultaneously. The target signal be well accumulated as an obvious peak in centroid frequency-chirp rate (CFCR) domain by simple FT calculations. It shown that SPRFT a generalized form of RFT Lv's distribution (LVD), includes instantaneous autocorrelation function, process,...

10.1049/cp.2015.1162 article EN 2015-01-01

Videos are dominant on the Internet. Current systems to process large-scale videos suboptimal due following reasons: (1) machine learning modules such as feature extractors and classifiers generate huge intermediate data place heavy burden storage network, (2) task scheduling is explicit; manually configuring cluster tedious inefficient. In this work, we propose Elastic Streaming Sequential Processing system (ESSP) that supports automatic scheduling; multiple components automatically...

10.1145/3134263.3134264 article EN 2017-10-20

Abstract The visual system of any animal species is adapted to its ecological niche. Thus, investigating function and behavior using naturalistic stimuli holds significant potential. In mice, these adaptations include a field view ∼280° cone opsins sensitive UV green wavelengths. Such adaptations, however, cannot be probed with standard consumer displays. To present we built hemispheric dome setup, enabling the controlled projection wide-field movies UV-green spectral content. For our...

10.1101/2024.05.31.596599 preprint EN cc-by-nc bioRxiv (Cold Spring Harbor Laboratory) 2024-06-01
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