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Front Matter: Volume 12420 封面:卷12420
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-05-09 DOI: 10.1117/12.2675443
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引用次数: 0
A 77-GHz Down-Conversion Mixer with +18.4 dB High Gain, +12.2 dBm OIP3, and Low Noise in 90-nm CMOS Technology 77 ghz下变频混频器,+18.4 dB高增益,+12.2 dBm OIP3,低噪声,采用90纳米CMOS技术
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-13 DOI: 10.1007/s10762-023-00917-2
Hua-Bin Zhang, Sida Tang, Mengye Cai, Yanfeng Jiang
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引用次数: 0
Shadow tracking for airborne terahertz video-SAR based on SORT algorithm 基于SORT算法的机载太赫兹视频sar阴影跟踪
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2662363
H. Wu, Fuwei Wu, S. Shang, Zhenhua Liu, Yuhao Yang, Dasheng Li, Pin Li
Equipped with ability of high-resolution and high-speed imaging in all weather conditions, airborne terahertz synthetic aperture radar received great attention at home and abroad. Because of the high imaging speed of terahertz synthetic aperture radar, ground moving targets can create well-positioned shadows in the image. That property endows terahertz video-SAR ability to detect and associate targets through shadow features. However, lack of enough researches on moving targets detection and tracking limited functions of terahertz video-SAR presently. In this paper, start from spotlight SAR images, we completed image registration and detected moving targets through background subtraction. Based on detection results, we tracked targets through simple online and real-time tracking(SORT) algorithm. We hope this work can help expand application of terahertz video-SAR.
机载太赫兹合成孔径雷达具有全天候高分辨率、高速成像的能力,受到了国内外的广泛关注。由于太赫兹合成孔径雷达成像速度快,地面运动目标会在图像中产生定位良好的阴影。这一特性赋予太赫兹视频sar通过阴影特征探测和关联目标的能力。然而,目前对太赫兹视频合成孔径雷达的运动目标检测和跟踪功能缺乏足够的研究。本文从聚束SAR图像入手,通过背景差法完成图像配准和运动目标检测。基于检测结果,采用简单的在线实时跟踪(SORT)算法对目标进行跟踪。我们希望这项工作能有助于扩大太赫兹视频sar的应用范围。
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引用次数: 0
Research on target intrusion detection algorithm based on improved ViBe using infrared thermal imaging 基于改进ViBe的红外热成像目标入侵检测算法研究
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2662528
Lin Sun, Qun Ma, Yue Zhao, Bing Liu, Tianhua Zhang, Heng Yang
The petrochemical industry plays an active role in driving the growth and structural upgrading of the entire national economy. In the storage process of refined oil, personnel theft is an important factor causing economic losses. Using infrared thermal imaging technology to monitor the perimeter of the oil depot can effectively improve the level of security monitoring. According to the application requirements of personnel intrusion detection in oil storage areas, this paper studies the moving target detection method under the static platform, and adopts the improved ViBe moving foreground target detection method to effectively extract the moving foreground and effectively eliminate the small interfering targets. Kalman filter combined with Hungarian algorithm is used to track the moving target. The simulation results show that the algorithm can effectively achieve the effective trajectory prediction and tracking of the moving target. Finally, it is transplanted on the hisilic 3519v101 embedded platform to achieve the requirements of real-time detection.
石化行业在拉动整个国民经济增长和结构升级中发挥着积极作用。在成品油储存过程中,人员盗窃是造成经济损失的重要因素。利用红外热成像技术对油库周边进行监控,可有效提高安全监控水平。根据油库区域人员入侵检测的应用需求,本文研究了静态平台下的运动目标检测方法,采用改进的ViBe运动前景目标检测方法,有效提取运动前景,有效剔除小干扰目标。采用卡尔曼滤波结合匈牙利算法对运动目标进行跟踪。仿真结果表明,该算法能有效地实现对运动目标的有效轨迹预测和跟踪。最后将其移植到海思3519v101嵌入式平台上,实现实时检测的要求。
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引用次数: 0
A cross-age face generation method based on CGAN and LSTM 基于CGAN和LSTM的跨年龄人脸生成方法
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2662598
Yunfei Cheng, Yuexia Liu, Wen Wang
Cross-age face generation refers to generating face images of other age groups by using images of known ages. It is widely used in public safety, entertainment, etc. As to the problem that the existing methods based on GANs only use age information as the generation condition and ignore the sequence of age information, we present a cross-age face generation method based on CGAN and LSTM. This method consists of four modules. The first module is a generator, which is used to generate face images of different age groups. The second module is a discriminator, whose main task is to determine whether the generated image is real or forged. The third module is a pre-trained ResNet, which is responsible for extracting the features of real images. Finally, LSTM provides age groups classification constraints for the generator by the sequence of age information.
跨年龄人脸生成是指利用已知年龄的人脸图像生成其他年龄段的人脸图像。广泛应用于公共安全、娱乐等领域。针对现有基于gan的人脸生成方法只以年龄信息作为生成条件,忽略年龄信息序列的问题,提出了一种基于CGAN和LSTM的跨年龄人脸生成方法。该方法由四个模块组成。第一个模块是生成器,用于生成不同年龄段的人脸图像。第二个模块是鉴别器,其主要任务是判断生成的图像是真实的还是伪造的。第三个模块是预训练的ResNet,负责提取真实图像的特征。最后,LSTM根据年龄信息的顺序为生成器提供年龄组分类约束。
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引用次数: 0
A novel method of heterologous image registration based on SURF and feature inertial following 一种基于SURF和特征惯性跟随的异源图像配准新方法
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2661631
S. Shang, Zhan-He Ou, Yang Zhou, Yuhao Yang, Pin Li
In this paper, a novel method of heterologous image registration method based on feature inertial following is proposed, which can perform high-precision and rapid registration of SAR image and optical image. The first image pair in the sequence is registered based on improved SURF feature to achieve high-precision registration. Based on this registration result, the other image pairs in the sequence are registered by the method of feature inertia following to achieve rapid registration. The proposed method makes full use of the correlation and gradient properties between image sequence frames. It maintains the registration accuracy of the preceding images, improves the registration speed greatly.
本文提出了一种基于特征惯性跟随的异源图像配准方法,可以实现SAR图像与光学图像的高精度快速配准。序列中的第一幅图像对基于改进的SURF特征进行配准,实现高精度配准。在此配准结果的基础上,采用特征惯性跟随的方法对序列中的其他图像对进行配准,实现快速配准。该方法充分利用了图像序列帧之间的相关性和梯度特性。它保持了前幅图像的配准精度,大大提高了配准速度。
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引用次数: 0
Infrared small target detection based on local image alignment in complex background 复杂背景下基于局部图像对准的红外小目标检测
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2663167
Fan Wang, Weixian Qian
Infrared (IR) small target detection is widely used in both civilian and military security fields. However, IR small target detection in complex backgrounds faces many challenges. For example, small targets often occupy only a few pixels in IR images, lacking texture and contour features. IR images are seriously disturbed by clutter and noise, which results in the target being easily submerged. Therefore, it is difficult to achieve a low false alarm rate and a high detection rate at the same time. In this paper, a small target detection method based on local image alignment is proposed. First, the thermal IR imaging system is combined with the range-gated technology. The range-gated technology can be used to shield the background of the non-gated area. Second, the continuous frames in the sequence are accumulated to suppress noise. The movement of the target will form a trailing line in the accumulated image, and the trailing line contains the motion information of the target. Third, the trailing line is detected and extracted. Each trailing line corresponds to a suspected target area, including the real target and edges in the background, and the motion information of the suspected target can be calculated from the length and direction of the trailing line. Then, according to the motion information, the local images of the suspected target in a certain number of consecutive frames are aligned and accumulated. In the accumulated image, the real small target will shrink to a bright spot, and the signal-to-noise ratio will be significantly improved, while the background edge still appears as a line. Finally, the target is extracted from the accumulated image.
红外小目标探测在民用和军用安全领域都有广泛的应用。然而,复杂背景下红外小目标检测面临着诸多挑战。例如,在红外图像中,小目标通常只占用几个像素,缺乏纹理和轮廓特征。红外图像受杂波和噪声干扰严重,目标容易被淹没。因此,很难同时实现低虚警率和高检出率。本文提出了一种基于局部图像对准的小目标检测方法。首先,将热红外成像系统与距离门控技术相结合。距离门控技术可以用来屏蔽非门控区域的背景。其次,对序列中的连续帧进行累加,抑制噪声;目标的运动将在积累的图像中形成一条拖尾线,拖尾线中包含目标的运动信息。第三步,检测并提取尾线。每条拖尾线对应一个疑似目标区域,包括真实目标和背景中的边缘,从拖尾线的长度和方向可以计算出疑似目标的运动信息。然后,根据运动信息,在一定数量的连续帧中对可疑目标的局部图像进行对齐和累积。在积累的图像中,真实的小目标会缩小为一个亮点,信噪比会显著提高,而背景边缘仍然以一条线的形式出现。最后,从累积图像中提取目标。
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引用次数: 0
Improved Faster-RCNN algorithm combined with infrared satellite image for tropical cyclone detection 结合红外卫星图像的改进Faster-RCNN算法用于热带气旋探测
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2661625
Liu Zhang, Changjiang Zhang, Feng Guo, Wanle Zhao
Automatic detection of tropical cyclone (TC) regions from satellite images can provide regions of interest for intelligent TC positioning and intensity determination, and improve the efficiency and accuracy of intelligent disaster weather forecasting. There are currently few studies on automatic detection of TCs from satellite images. In recent years, deep learning technology has developed rapidly in various fields. This paper improves the Faster-RCNN target detection model in deep learning and applies it to the TC detection. The TC detection model designed in this paper is based on the original Faster-RCNN network framework, and the feature extraction network is changed from the original VGG16 network to the ResNet50 network . On this basis, this paper designs a feature fusion network Single Output Feature Fusion Networks (SOFFN). The feature layer used for detection can combine the semantic information of the high-level feature map and the high-resolution feature information of the low-level feature map, fuse different feature layers. At the same time, a new attention mechanism, Channel Linear Weighted Networks (CLWNet), based on the Squeeze-and-Excitation Networks (SENet) channel attention mechanism improvement is added to the model designed in this paper to improve the detection performance. In this paper, China's FY-2D satellite images are used to verify the performance of the proposed model. Experimental results show that the proposed model has achieved good results in TC detection.
从卫星图像中自动探测热带气旋区域,可以为热带气旋智能定位和强度确定提供感兴趣的区域,提高灾害天气智能预报的效率和精度。目前关于从卫星图像中自动检测tc的研究很少。近年来,深度学习技术在各个领域发展迅速。本文改进了深度学习中的Faster-RCNN目标检测模型,并将其应用于TC检测。本文设计的TC检测模型是基于原来的Faster-RCNN网络框架,特征提取网络由原来的VGG16网络改为ResNet50网络。在此基础上,设计了单输出特征融合网络(Single Output feature fusion Networks, SOFFN)。用于检测的特征层可以结合高级特征图的语义信息和低级特征图的高分辨率特征信息,融合不同的特征层。同时,在基于挤压激励网络(SENet)通道注意机制改进的基础上,在本文设计的模型中加入了一种新的注意机制——通道线性加权网络(Channel Linear Weighted Networks, CLWNet),以提高检测性能。本文使用中国的FY-2D卫星图像来验证所提出模型的性能。实验结果表明,该模型在TC检测中取得了较好的效果。
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引用次数: 0
Pixel-level temperature sensor design for image sensors 像素级温度传感器的图像传感器设计
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2664572
Chiyuan Zhang, Nan Chen, L. Yao, Shengyou Zhong, Jiqing Zhang, Changkun Cui
With the development of science and technology, image sensors are more and more widely used, such as digital cameras and surveillance cameras. However, due to the physical characteristics of the photodetector, which performance is sensitive to the variation of the operating temperature. Therefore, a digital temperature sensor integrated on the chip is required to measure the operating temperature and assist in correction and compensation. Traditional scheme integrates one temperature sensor on the whole image sensor chip, which can’t reflect the temperature distribution for each pixel. It’s desirable to implement temperature measurement in pixel level for accurate correction, but existing temperature sensor occupying area of hundred μm2, which can’t be input to the pixel of image sensor. In additional, the power consumption of each temperature sensor is μW-level, which will dissipate considerable power for million temperature sensors. In this paper, a pixel-level integrated temperature sensor is proposed. The circuit is composed of only a capacitor and a conventional diode. The readout circuit is similar to that of the active pixel of image sensor, thus the ADC (Analog-to-Digital Converter) and other readout circuits and be multiplexed. The temperature sensor integrated in pixel is designed, which area is only 0.21 μm2. The simulation results show the increased power consumption for 50Hz working pixels don’t exceed 4%. It’s confirmed that the proposed pixel-level integrated temperature sensor can measure the temperature of each pixel and assisting in the accurate correction of image sensor in pixel level.
随着科学技术的发展,图像传感器的应用越来越广泛,如数码摄像机、监控摄像机等。然而,由于光电探测器的物理特性,其性能对工作温度的变化很敏感。因此,需要集成在芯片上的数字温度传感器来测量工作温度并辅助校正和补偿。传统的方案在整个图像传感器芯片上集成了一个温度传感器,无法反映每个像素的温度分布。为了精确校正,需要实现像素级的温度测量,但现有的温度传感器占地数百μm2,无法输入到图像传感器的像素上。此外,每个温度传感器的功耗为μ w级,这将为数百万个温度传感器消耗相当大的功率。本文提出了一种像素级集成温度传感器。该电路仅由一个电容器和一个传统二极管组成。读出电路类似于图像传感器的有源像素,因此ADC (Analog-to-Digital Converter,模数转换器)和其他读出电路可以复用。设计了面积仅为0.21 μm2的像素级温度传感器。仿真结果表明,50Hz工作像素的功耗增加不超过4%。验证了所提出的像素级集成温度传感器可以测量每个像素的温度,并有助于图像传感器在像素级的精确校正。
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引用次数: 0
Fire detection algorithm of infrared thermal imaging in petrochemical area based on improved YOLOv4-tiny framework and time-domain feature analysis 基于改进YOLOv4-tiny框架和时域特征分析的石化区红外热像火灾探测算法
IF 2.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2023-04-12 DOI: 10.1117/12.2661626
Qun Ma, Mei-rong Zhao, Lin Sun, Yue Zhao, Yelong Zheng, B. Liu
Oil is one of the most important energy supplies for economic development. In recent years, the fire safety problems of petrochemical enterprises have become prominent, with serious casualties and property losses. The continuously monitoring of key areas through the low-cost and intelligent infrared thermal imaging video monitoring system has important engineering application significance for the improvement of petrochemical site safety problems. According to the characteristics of infrared thermal imaging fire target, this paper proposes a method of deep neural network combined with time-domain feature analysis to realize fire detection. Firstly, high thermal pixels are extracted from the infrared image, and the gray-scale image is converted into a binary gray-scale image. Based on the YOLOv4 tiny framework, multi-level channel prediction and attention mechanism are added to detect the fire candidate target of the binary image, Finally, the candidate target is finally determined by analyzing the time-domain characteristics. Compared with the traditional temperature threshold judgment infrared temperature measurement fire alarm system, it can achieve high detection rate and effectively reduce the false alarm rate of the system. The intelligent security monitoring system in Petrochemical area designed in this paper has been applied in practical engineering, and the fire detection effect is good, which realizes the requirements of low power consumption, low cost and high reliability of the security monitoring system in Petrochemical area based on infrared thermal imaging.
石油是经济发展最重要的能源供应之一。近年来,石化企业的消防安全问题日益突出,造成了严重的人员伤亡和财产损失。通过低成本、智能化的红外热成像视频监控系统对关键区域进行持续监控,对于改善石化现场安全问题具有重要的工程应用意义。根据红外热成像火灾目标的特点,提出了一种结合时域特征分析的深度神经网络实现火灾探测的方法。首先,从红外图像中提取高热像元,将灰度图像转换为二值灰度图像;基于YOLOv4微小框架,加入多通道预测和注意机制,对二值图像的5个候选目标进行检测,最后通过分析时域特征最终确定候选目标。与传统的温度阈值判断红外测温火灾报警系统相比,可以实现较高的检出率,有效降低系统的虚警率。本文设计的石油化工区域智能安防监控系统已在实际工程中得到应用,火灾探测效果良好,实现了基于红外热成像的石油化工区域安防监控系统低功耗、低成本、高可靠性的要求。
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Journal of Infrared, Millimeter, and Terahertz Waves
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