Label distribution learning (LDL) is a general learning framework, which assigns to an instance a distribution over a set of labels rather than a single label or multiple labels. Current LDL methods have either restri...
详细信息
Quantum key distribution (QKD) provides secure keys resistant to code-breaking quantum computers. As headed towards commercial application, it is crucial to guarantee the practical security of QKD systems. However, th...
详细信息
We report the composable security analysis for continuous-variablemeasurementdevice- independent quantum key distribution protocol, in which detection is conducted by an untrusted third party and naturally defend all ...
详细信息
We demonstrated a novel on-chip polarization controlling structure, fabricated by standard 0.18-μm foundry technology. It achieved polarization rotation with a size of 0.726 μm × 5.27 μm and can be easily exte...
We demonstrate a 500MHz repetition rate, 61fs self-starting Yb:fiber laser incorporated with a phase biased nonlinear amplifying loop mirror. Although the fiber is non-polarization maintaining, the mode locking is env...
详细信息
ISBN:
(纸本)9781509062904
We demonstrate a 500MHz repetition rate, 61fs self-starting Yb:fiber laser incorporated with a phase biased nonlinear amplifying loop mirror. Although the fiber is non-polarization maintaining, the mode locking is environmentally stable.
Visual tracking, as a popular computer vision technique, has a wide range of applications, such as camera pose estimation. Conventional methods for it are mostly based on vision only, which are complex for image proce...
详细信息
Visual tracking, as a popular computer vision technique, has a wide range of applications, such as camera pose estimation. Conventional methods for it are mostly based on vision only, which are complex for image processing due to the use of only one sensor. This paper proposes a novel sensor fusion algorithm fusing the data from the camera and the fiber-optic gyroscope. In this system, the camera acquires images and detects the object directly at the beginning of each tracking stage; while the relative motion between the camera and the object measured by the fiber-optic gyroscope can track the object coordinate so that it can improve the effectiveness of visual tracking. Therefore, the sensor fusion algorithm presented based on the tracking system can overcome the drawbacks of the two sensors and take advantage of the sensor fusion to track the object accurately. In addition, the computational complexity of our proposed algorithm is obviously lower compared with the existing approaches(86% reducing for a 0.5 min visual tracking). Experiment results show that this visual tracking system reduces the tracking error by 6.15% comparing with the conventional vision-only tracking scheme(edge detection), and our proposed sensor fusion algorithm can achieve a long-term tracking with the help of bias drift suppression calibration.
Age estimation from facial images is typically cast as a nonlinear regression problem. The main challenge of this problem is the facial feature space w.r.t. ages is heterogeneous, due to the large variation in facial ...
详细信息
The network functions virtualization (NFV) paradigm provides advantages with respect to aspects like flexibility, costs, and scalability of networks. However, management and orchestration of the resulting networks als...
详细信息
Silicon photonics, one of the most promising candidates forbreaking the bottleneck of current optical transmission systems, has been developing rapidly in both performance andmaturity. The analysis and design of the t...
详细信息
Silicon photonics, one of the most promising candidates forbreaking the bottleneck of current optical transmission systems, has been developing rapidly in both performance andmaturity. The analysis and design of the two key componentsof this technology, the optical modulator and detector, are presented in this paper. The Mach-Zehnder modulator with Utype PN junction is optimized to obtain the modulation efficiency of 0.559 V·cm. The electro-optical 3 dB bandwidth ofthis device is 30 GHz. The simulation of the PIN waveguideSi based Ge photodetector at 1.55 μm wavelength is also presented. The device shows a very low dark current of about 10 nA-at1 V, and the obtained responsivity and 3 dB bandwidth are appreciable. These results practically meet the requirement of commercial 100 Gb/s optical transmission systems.
Nowadays, with improvements in the quality of life, people are paying more attention to their health. Traditional Chinese medicine offers great advantages for daily care. In this paper, we present the development of a...
详细信息
Nowadays, with improvements in the quality of life, people are paying more attention to their health. Traditional Chinese medicine offers great advantages for daily care. In this paper, we present the development of a remote health care system, namely, Chinese Pulse Condition Acquisition System （CPCAS）, based on the principle of Chinese pulse diagnosis in Chinese medicine and a wireless sensor network. We designed a remote health care terminal with a mini-pulse collection bench to overcome the challenge of differences in pulse characters of different people. An effective measured pressure control algorithm is proposed to achieve a balance between control accuracy and control time. The special signal conditioning circuit showed good performance in analog pulse signal processing. We also performed significant research to address the challenges of symptom recognition. Other distinctive features of this system include the following： intelligent sensing, a wireless health care network, effective energy management, small size, lightweight, and the ability to be networked for remote management. In this paper, we have introduced the design and implementation of CPCAS. We also demonstrate the use of the system and give evaluations on this system by several experiments. Our results indicate that CPCAS has significant practical feasibility.
暂无评论