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Acceleration of infrared Target detection via Efficient Channel Pruning

Journal of Physics: Conference Series 2022年第1期2203卷

作者： Zhuang Miao Yong Zhang Weihua Li Ruimin Chen Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China School of Electronic Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing 100049 China

Deployment of modern detection models is difficult for infrared target detection used in robot vision systems due to their heavy computational burden. To alleviate this situation, a simple but efficient channel pruning method is proposed for model acceleration. Specifically, a soft-gated module combined with batch normalization (SGBN) is designed as a standalone layer to substitute the standard batch normalization (BN) layer during training. The conversion between SGBN and BN is easy, and the training overhead introduced is almost negligible after replacement. By controlling the sparsity of the scaling factor in SGBN, unimportant channels with small output are blocked automatically and globally, which is simultaneous with model training. Removing these redundant channels no longer requires fine-tuning, thus significantly speeding up the pruning process. Experiments of pruning different detection models on the infrared dataset show the effectiveness of our method. For example, the parameters and FLOPs of pruned CetnerNet are reduced by 72.70% and 40.20%, respectively, without accuracy loss. The inference speed on the CPU is 12.01ms faster. Extended studies on the classification task also demonstrate its great potential when transferring to other applications.

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An improvement method of a lossless compression scheme for the datacube from Geostationary Interferometric infrared Sounder (GIIRS) and its FPGA implementation

An improvement method of a lossless compression scheme for t...

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IEEE Joint International Information technology and Artificial Intelligence Conference (ITAIC)

作者： Minzhu Yang Raúl Guerra Hernández Changpei Han José Francisco López Feliciano Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province College of Information Engineering China Jiliang University Hangzhou China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Science Shanghai China Instituto Universitario de Microelectrónica Aplicada Universidad de Las Palmas de Gran Ganaria Las Palmas Spain

ISBN: (数字)9781728152448

ISBN: (纸本)9781728152455

This paper briefly described an improved method for the original proposed scheme based on Vector Quantization and Linear Prediction to further enhance the compression ratio while reduce the time cost. Given the fact that the interferograms belong to the same datacube are similar to each other, there are two obvious modifications in this paper: predict only once to get the general predicted coefficients for the same datacube; along with treat datacube rather than sequence as the encoded unit. The time consumption spent by Linear Prediction part will shrink about 35.55% by predicting just once. Moreover, the change of the encoded object makes the final compression ratio get a further rise range from 2.62% to 3.711%.

关键词： Vector quantization Conferences Information technology Artificial intelligence Field programmable gate arrays

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Development and Prospect of Spaceborne infrared Fourier Spectrometer 1

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5th China High-resolution Earth Observation Conference, CHREOC 2018

作者： Chen, Ren Gao, Cong Hua, Jianwen Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China Key Laboratory of Infrared Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China University of Chinese Academy of Sciences Beijing10049 China

ISBN: (数字)9789811365539

ISBN: (纸本)9789811365522

The satellite-borne infrared Fourier spectrometer is one of the main infrared remote sensing instruments mounted on meteorological satellites. It can detect the vertical distribution of parameters such as large temperature and humidity. In this paper, the development of spaceborne infrared Fourier spectrometer is reviewed, and the performance characteristics of the spaceborne infrared Fourier spectrometer at a different stage at home and abroad are compared. Combined with the development of current instruments and the characteristics of the information age, the process of spaceborne infrared Fourier spectrometer technology development is prospected, and the development direction of "one wide and three high" and hyperspectral integrated data network is pointed out, which can provide reference for maturity and practicability of the infrared Fourier spectrometer technology in China. © 2019, Springer Nature Singapore Pte Ltd.

关键词： Fourier transform infrared spectroscopy

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A 3D space-ground atmospheric observation system

A 3D space-ground atmospheric observation system

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Fourier Transform Spectroscopy, FTS 2019

作者： Ren, Chen Cong, Gao Lei, Liu Jianwen, Hua Lei, Ding Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China University of Chinese Academy of Sciences Beijing100049 China College of Meteorology and Oceanography National University of Defense Technology Nanjing211101 China

This paper introduced a three-dimensional(3D) Space-ground atmospheric observation system, which is based on interference optics technology. It is used to detect the three-dimensional distribution and change of atmosp... 详细信息

ISBN: (纸本)9781943580613

关键词： Atmospheric humidity

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Design, performance and in-orbit evaluation results of Tiangong-2 wide-band imaging spectrometer

Design, performance and in-orbit evaluation results of Tiang...

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Tiangong-2 Remote Sensing Application Conference on technology, Method and Application

作者： Wei, Jun Ding, Lei He, Xianqiang Tang, Yuyu Feng, Xin Lin, Mingsen Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography SOA Hangzhou310012 China National Satellite Ocean Application Service SOA Beijing100081 China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China

ISBN: (纸本)9789811335006

The system design, performance and in-orbit evaluations of a push-broom wide-band imaging spectrometer (WIS) on Tiangong-2 space laboratory is introduced. The WIS has 100 m spatial resolution in ocean color bands (FOV is around 42°), which is the highest compared to other in-orbit ocean color sensors (GOCI, MODIS, VIIRS, and OLCI). Besides, WIS includes visible and near infrared (VNIR), shortwave infrared (SWIR) and thermal infrared (TIR) channels and has excellent performance in ocean color monitoring, and SNR in 0.4–0.8 μm is more than 400 at typical oceanic radiance. Average SNR at SWIR is more than 550 at typical atmosphere radiance. Moreover, the instrument’s average NE⊿T at TIR is lower than 20 mK, which is one of the best. The in-orbit tests reveal that the ocean color components retrieved by WIS are highly consistent with the results from the typical ocean color satellite sensors (MODIS, VIIRS and GOCI), but have finer structures due to higher spatial resolution. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Dewars

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Consistent Transfer Radiometric Calibration technology for Optical Remotely Sensor and Field Campaign Validation

Consistent Transfer Radiometric Calibration Technology for O...

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Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, WHISPERS

作者： Ning Wang Yonggang Qian Lingling Ma Yinnian Liu Yaokai Liu Yongguang Zhao Chuanrong Li Lingli Tang Key Laboratory of Quantitative Remote Sensing Information Technology Academy of Opto-Electronics Beijing China Key Laboratory of Infrared System Detection and Imaging Technologies Shanghai Institute of Technical Physics Shanghai China

ISBN: (纸本)9781728152950

To accurately calibrate the remotely sensed data becomes one of the primary problems for different application of remote sensing. In this paper, consistent transfer radiometric calibration technology is proposed, and the related system composed of standard ground-based and airborne hyperspectral imagers with self-calibrator units, comprehensive references including different types of artificial targets and natural scenes, and benchmark transfer method have been developed. The uncertainty of this system has also been analyzed and an uncertainty of less than 4.5% could be reached by this system. To validate this system, a flight campaign taking place in National High-Resolution Comprehensive Calibration Site of China has been carried out, the results show that the ground-based and air-flight benchmarks were agree with the satellite measurement.

关键词： Calibration Benchmark testing Uncertainty Radiometry Hyperspectral imaging Atmospheric modeling Atmospheric measurements

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短波红外荧光成像活体监测和评估植入的M2巨噬细胞在骨骼肌再生中的作用（英文）

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Engineering 2024年第2期 283-294页

作者： Mo Chen Yuzhou Chen Sijia Feng Shixian Dong Luyi Sun Huizhu Li Fuchun Chen Nguyen Thi Kim Thanh Yunxia Li Shiyi Chen You Wang Jun Chen Sports Medicine Institute of Fudan University Department of Sports Medicine Huashan Hospital Fudan University Department of Bone and Joint Surgery Department of Orthopedics Renji Hospital School of Medicine Shanghai Jiao Tong University Department of Anatomy and Physiology School of Medicine Shanghai Jiao Tong University Key Laboratory of Infrared System Detection & Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Biophysics Group Department of Physics and Astronomy University College London Healthcare Biomagnetics and Nanomaterials Laboratories University College London

Skeletal muscle has a robust regeneration ability that is impaired by severe injury,disease,and *** in a decline in skeletal muscle ***,improving skeletal muscle regeneration is a key challenge in treating skeletal muscle-related *** to their significant role in tissue regeneration,implantation of M2 macrophages(M2M?) has great potential for improving skeletal muscle ***,we present a short-wave infrared(SWIR) fluorescence imaging technique to obtain more in vivo information for an in-depth evaluation of the skeletal muscle regeneration effect after M2M? *** fluorescence imaging was employed to track implanted M2M? in the injured skeletal muscle of mouse *** is found that the implanted M2M? accumulated at the injury site for two ***,SWIR fluorescence imaging of blood vessels showed that M2M? implantation could improve the relative perfusion ratio on day 5(1.09±0.09 vs 0.85±0.05;p=0.01) and day 9(1.38±0.16 vs 0.95±0.03;p=0.01) post-injury,as well as augment the degree of skeletal muscle regencration on day 13 ***,multiple linear regression analyses determined that post-injury time and relative perfusion ratio could be used as predictive indicators to evaluate skeletal muscle *** results provide more in vivo details about M2M? in skeletal muscle regeneration and confirm that M2M? could promote angiogenesis and improve the degree of skeletal muscle repair,which will guide the research and development of M2M? implantation to improve skeletal muscle regeneration.

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A review of ultrasonic infrared thermography in non-destructive testing and evaluation (NDT&E): Physical principles, theory, and data processing

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infrared Physics & technology 2025年

作者： Rongcheng Li Fei Wang Peng Yin Feng Yang Jianghao Zhao Zhuoyan Yue Lixia Liu Stefano Sfarra G.T. Vesala Honghao Yue Junyan Liu School of Mechatronics Engineering Harbin Institute of Technology Harbin 150001 PR China State Key Laboratory of Robotics and System (HIT) Harbin 150001 PR China Beijing Satellite Manufacturing Factory Co. LTD Beijing 100001 PR China Department of Industrial and Information Engineering and Economics University of L’Aquila 67100 Italy Infrared Imaging Center Department of Electronics and Communication Engineering Koneru Lakshmaiah Educational Foundation Vaddeswaram A.P India

Ultrasonic infrared Thermography (UIT) represents a high-efficiency non-destructive testing method that combines ultrasonic excitation and infrared thermography. UIT produces thermoelastic effect or friction heat generation effect through ultrasonic excitation, and uses infrared camera to capture the changes of surface temperature field, achieving the visual detection of defects. The merits of UIT are manifold, including non-contact, high sensitivity, rapidity, and efficiency, as well as the capacity for multi-scale detection and quantitative evaluation. Consequently, it finds wide application in the detection of surface and near-surface defects in metals, composites, and other materials. This study firstly introduces the principles of ultrasonic infrared thermography non-destructive testing technology. Subsequently, the implementation process of UIT in ultrasound excitation source, excitation waveform, feature extraction algorithm, and image processing were described to facilitate understanding of the technology. The paper then goes on to highlight the development status and practical application examples of ultrasonic infrared thermography non-destructive testing technology, and analyses the problems faced by ultrasonic infrared thermography technology. Finally, the paper offers an outlook on future development trends in ultrasonic infrared thermography non-destructive testing technology.

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CT Radiomics for Predicting Outcomes in HER2-Positive Surgically Resectable Advanced Gastric Cancer: A Preliminary Study

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Academic radiology 2025年

作者： Huiping Zhao Jianbo Gao Jing Li Jinrong Qu Rui Wang Liming Li Ming Cheng Pan Liang Department of CT Shaanxi Provincial People's Hospital No. 256 Youyi West Road Xi'an 710068 Shaanxi Province China (H.Z.) National Engineering Research Center for Miniaturized Detection Systems School of Life Sciences Northwest University No. 229 North Taibai Road Xi'an 710069 Shaanxi Province China (H.Z.). Electronic address: kindergirl@***. Department of Radiology The First Affiliated Hospital of Zhengzhou University No. 1 East Jianshe Road Zhengzhou 450052 Henan Province China (J.G. L.L. P.L.) Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor & Henan International Joint Laboratory of Medical Imaging & Henan Engineering Laboratory of Tumor Imaging & Henan Key Laboratory of CT Imaging & Zhengzhou Key Laboratory of Medical Imaging Technology and Diagnosis No. 1 East Jianshe Road Zhengzhou 450052 Henan Province China (J.G. L.L. M.C. P.L.). Department of Radiology The Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital) Zhengzhou 450008 Henan Province China (J.L. J.Q.). Department of Radiology The First Affiliated Hospital of Xi'an Jiaotong University 277 Yanta West Road Yanta District Xi'an 710061 Shaanxi Province China (R.W.). Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor & Henan International Joint Laboratory of Medical Imaging & Henan Engineering Laboratory of Tumor Imaging & Henan Key Laboratory of CT Imaging & Zhengzhou Key Laboratory of Medical Imaging Technology and Diagnosis No. 1 East Jianshe Road Zhengzhou 450052 Henan Province China (J.G. L.L. M.C. P.L.) Department of Medical Information The First Affiliated Hospital of Zhengzhou University No. 1 East Jianshe Road Zhengzhou 450052 Henan Province China (M.C.).

RATIONALE AND OBJECTIVES:Accurate risk stratification in human epidermal growth factor receptor 2-positive surgically resectable advanced gastric cancer (HER2-p SRAGC) can strengthen monitoring for high-risk patients, allowing timely HER2-specific treatment and potentially improving prognosis. Therefore, we aimed to develop a CT radiomics model for predicting outcomes in HER2-p SRAGC and compare it with the 8th edition TNM staging system. MATERIALS AND METHODS:621 HER2-p SRAGC patients who received either radical gastrectomy or radical gastrectomy after neoadjuvant therapy or chemotherapy were retrospectively enrolled in two hospitals and assigned to a training (n=330), an internal validation (n=143) and an external validation (n=148) cohorts. A radiomics model incorporating Radscore and clinical scores was constructed. Model performance was assessed by Kaplan-Meier estimator, Log-rank test, and Harrell's C-index. RESULTS:The radiomics model was correlated with the overall survival (OS) across all cohorts, with C-indexes of 0.711[95% confidence interval (CI): 0.666-0.756; p<0.001; training], 0.669 (95%CI: 0.585-0.753; p=0.009; internal validation) and 0.693 (95%CI: 0.597-0.789; p=0.015; external validation). In all study cohorts, the radiomics model successfully stratified patients into high-risk and low-risk groups, and outweighed individual scores, pathological staging (pTNM), and clinical staging (cTNM) but was inferior to post-neoadjuvant therapy staging (ypTNM). Additionally, the radiomics model had added value to the prognostic efficacy of pTNM and was unaffected by patient age and gender. CONCLUSION:The radiomics model delivers individualized prognosis prediction of HER2-p SRAGC, surpassing clinical scores, and both pTNM and cTNM in forecasting OS. It confers incremental benefit to pTNM and exhibits certain universality across patient types. TRIAL REGISTRATION:Retrospectively registered.

关键词： ERBB2 Prognosis Radiomics Stomach neoplasms Tomography, X-ray computed

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AHSI: the Hyperspectral Imager on China's GaoFen-5 Satellite

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IOP Conference Series: Earth and Environmental Science 2020年第1期509卷

作者： Yin-Nian Liu De-Xin Sun Xiao-Ning Hu Shu-Feng Liu Kai-Qin Cao Key Laboratory of Infrared System Detection and Imaging Technologies Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China

The Advanced Hyperspectral Imager (AHSI) is a visible/short-wave infrared hyperspectral imager on China's GaoFen-5 satellite, which was launched on May 9th, 2018. The AHSI is the first spaceborne hyperspectral sensor that utilizes both the convex grating spectrophotometry and an improved three concentric-mirror (Offner) configuration. It has 60 km swath width, 30 m spatial resolution, 5-10 nm spectral resolution, and 330 spectral bands. Instrument performance was evaluated and validated through well-designed experiments on orbit. Results show that the performance of AHSI has met or exceeded predictions. The AHSI has outstanding capability of detecting and identifying different ground objects and in ecological environment monitoring and natural resource exploration.

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