| 1. |
- Kristan, Matej, et al.
(författare)
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The first visual object tracking segmentation VOTS2023 challenge results
- 2023
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Ingår i: 2023 IEEE/CVF International conference on computer vision workshops (ICCVW). - : Institute of Electrical and Electronics Engineers Inc.. - 9798350307443 - 9798350307450 ; , s. 1788-1810
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Konferensbidrag (refereegranskat)abstract
- The Visual Object Tracking Segmentation VOTS2023 challenge is the eleventh annual tracker benchmarking activity of the VOT initiative. This challenge is the first to merge short-term and long-term as well as single-target and multiple-target tracking with segmentation masks as the only target location specification. A new dataset was created; the ground truth has been withheld to prevent overfitting. New performance measures and evaluation protocols have been created along with a new toolkit and an evaluation server. Results of the presented 47 trackers indicate that modern tracking frameworks are well-suited to deal with convergence of short-term and long-term tracking and that multiple and single target tracking can be considered a single problem. A leaderboard, with participating trackers details, the source code, the datasets, and the evaluation kit are publicly available at the challenge website1
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| 2. |
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| 3. |
- Ji, Guangchao, et al.
(författare)
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Skin-attached sensor and artifact removal using cloud computing
- 2015
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Ingår i: Proceedings of the International Conferences on e-Health 2015, EH 2015, e-Commerce and Digital Marketing 2015, EC 2015 and Information Systems Post-Implementation and Change Management 2015, ISPCM 2015 - Part of the Multi Conference on Computer Science and Information Systems 2015. - : IADIS. - 9789898533425 ; , s. 233-234
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Konferensbidrag (refereegranskat)abstract
- In this paper we present user-centric and user-friendly technical solutions for the proactive healthcare, in particular for senior citizens. The main objective is to develop a skin attached sensing device by leveraging miniaturized biomedical circuits and flexible sensor technology. Digital signal processing algorithms are applied on the Cloud server for near real-time signal shaping and noise removal.
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| 4. |
- Tu, Li, et al.
(författare)
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A wide-range operating synaptic device based on organic ferroelectricity with low energy consumption
- 2018
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Ingår i: RSC Advances. - : Royal Society of Chemistry. - 2046-2069. ; 8:47, s. 26549-26553
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Tidskriftsartikel (refereegranskat)abstract
- In thiswork, a wide-range operating synaptic device based on organic ferroelectricity has been demonstrated. The device possesses a simple two-terminal structure by using a ferroelectric phase-separated polymer blend as the active layer and gold/indium tin oxide (ITO) as the top/bottom electrodes, and exhibits a distinctive history-dependent resistive switching behavior at room temperature. And the device with low energy consumption (similar to 50 fJ mu m(-2) per synaptic event) can provide a reliable synaptic function of potentiation, depression and the complex memory behavior simulation of differential responses to diverse stimulations. In addition, using simulations, the accuracy of 32 x 32 pixel image recognition is improved from 76.21% to 85.06% in the classical model Cifar-10 with 1024 levels of the device, which is an important step towards the higher performance goal in image recognition based on memristive neuromorphic networks.
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| 5. |
- Xu, Jiawei, et al.
(författare)
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Optimized Near-Zero Quantization Method for Flexible Memristor Based Neural Network
- 2018
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Ingår i: IEEE Access. - : Institute of Electrical and Electronics Engineers (IEEE). - 2169-3536. ; 6, s. 29320-29331
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Tidskriftsartikel (refereegranskat)abstract
- Due to controllable conductance and non-volatility, flexible memristors are regarded as a key enabler for building artificial neural network (ANN)-based learning algorithms in flexible and wearable systems. However, the existing flexible memristors are suffering from limited number of conductance values, issues limiting large-scale integration, and insufficient accuracy that cannot support accurate computation of ANN. In this paper, solutions are proposed for the three major challenges of the flexible memristor; the feasibility of a three-layer fully connected neural network on MNIST and a 13-layer convolutional neural network (CNN) on CIFAR-10 using the flexible memristor based on single-walled carbon nanotubes network/polymer composite and hydrophilic Al2O3 dielectric are studied. The evaluation result shows that in the fully connected neural network system, it is able to recognize MNIST with an accuracy above 90% after 4-bit quantization, 52.05% decrease in interconnection numbers in the circuit and up to 40% random error introduced, and in the CNN on CIFAR-10, the system can retain an accuracy above 86% with less than 4% accuracy loss after 5-bit quantization, 59.34% decrease in interconnection numbers in the circuit and up to 40% random error injected.
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| 6. |
- Yang, Kunlong, et al.
(författare)
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A flexible artificial synapse for neuromorphic system
- 2018
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Ingår i: 2018 IEEE International Conference on Electron Devices and Solid State Circuits (EDSSC). - : IEEE conference proceedings.
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Konferensbidrag (refereegranskat)abstract
- Neuromorphic computing, as a new paradigm, highlighted for its highly parallel, energy efficient features, has attracted a lot of attention. The hardware implementation for a neuromorphic system proposes the strong desire for suitable building blocks. The synaptic device is a very promising solution because of its stimulation-history-related response, which fits the nature of a neural network. In this work, an artificial synapse based on a memristive transistor fabricated by a simple process is realized. The device not only shows multi-level states which is the main feature of a memristor and is essential to hardware implementation neuromorphic system, but also exhibits physical flexibility, a feature that supports wearable and portable electronics. On this basis, a proof-of-feasibility simulation using the experimental data is performed to realize the pattern classification.
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| 7. |
- Yang, Kunlong, et al.
(författare)
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A photoelectrical artificial synapse for novel neuromorphic network
- 2018
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Ingår i: 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781538653364
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Konferensbidrag (refereegranskat)abstract
- The requirement of information acquisition and processing is growing rapidly. However, existing systems either suffering from inadequate processing ability or from architecture limitations being restricted by the data sensing and transmission process. In this work, a novel photoelectrical artificial synapse is developed to settle down these issues by proposing a new possibility of having a photoelectrical neuromorphic network. The photoelectrical artificial synapse has both light sensing and non-volatile multilevel states making it a suitable candidate as building block in a sensing-processing merged and photoelectrical- enabled neuromorphic system. The device also has physical flexibility to adapt to flexible and wearable systems. This work initiates a new area of novel artificial synapses and neuromorphic networks.
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| 8. |
- Yang, Kunlong
(författare)
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Flexible Electrical and Photoelectrical Artificial Synapses for Neuromorphic Systems
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Over the past decade, the field of personal electronic systems has trended toward mobile and wearable devices. However, the capabilities of existing electronic systems are overwhelmed by the computing demands at the wearable sensing stage. Two main bottlenecks are encountered. The first bottleneck is located within the computing module, between the processing units and the memory, and is known as the von-Neumann bottleneck. The second bottleneck is located between the sensing module and the computing module of the system.Inspired by neuromorphic computing, an architecture of the sensitive neuromorphic network (SNN) is developed as a candidate for overcoming both bottlenecks. Suitable building blocks, especially in flexible form, must be developed. In this work, starting from the demand analysis and followed by prototype development, performance optimization, and feasibility testing, two kinds of critical devices were developed for fabricating a photosensitive neuromorphic network (PSNN).A high-performance flexible electrical artificial synapse that is based on the electron-trapping mechanism was developed. In addition to the basic memristive features, multiple kinds of synaptic plasticity were also demonstrated, which enriched the collection of possible applications. Furthermore, optimization on multiple performance metrics was easily performed using the intrinsic features and structure of the device.A new photoelectrical artificial synapse was also realized by successfully combining light signal sensing and processing in a single synapse. A flexible dual-mode photoelectrical synapse, which fulfilled the requirements of the designed PSNN working protocol, was demonstrated. The device showed gate-tunable photomemristive features, thereby enabling its application as a photoelectrical artificial synapse.Using the newly developed devices and the proposed network architecture, this work successfully initiated a new area of research, namely, the sensitive neuromorphic network, and provided a valid solution that addresses the current limitations of existing wearable electronic systems.
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| 9. |
- Yang, Kunlong, et al.
(författare)
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Humidity effect on photoelectrical properties of photosensitive field effect transistors
- 2019
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Ingår i: Organic electronics. - : Elsevier. - 1566-1199 .- 1878-5530. ; 69, s. 42-47
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Tidskriftsartikel (refereegranskat)abstract
- Environmental influences are critical for the reliability of photoelectric devices, especially those using organic semiconductors. Among all the influence factors, the effect of relative humidity on the material's photoelectrical properties receives less attentions. To date, reported humidity effects are mostly related to the electrical properties. Their impact to the photoelectrical characteristics has rarely been investigated. In this work, we firstly report a detailed study on the dependency of material's photoelectrical properties on the relative humidity in photosensitive field effect transistors. It was found that both the amplitude and the decay time of the photocurrent indicated a profound dependency on the humidity. To further clarify the mechanism, experiments were carefully designed along with a simulation to recognize and to provide a detailed understanding on any possible influence factors in these processes. The results indicate a prominent co-existence of carrier-trapping and dielectric-polarization phenomena in the photoelectric device under the influences of humidity. Since the water molecules in the atmosphere are predominant, the observed variation in the photoelectrical properties can be explained.
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| 10. |
- Yang, Kunlong, et al.
(författare)
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Humidity effect on photoelectrical response in photosensitive field effect transistors
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Environmental influences on photoelectrical devices are critical for a reliable working condition. Among all the factors, the effect of relative humidity received less attention. Up to date, reported humidity effects were mostly about the electrical properties. The relationship of humidity and photoelectrical response has rarely been investigated. In this work, we first reported the novel dependency of photocurrent on the relative humidity in photosensitive field effect transistors. Both the amplitude and the decay time of the photocurrent were related to the humidity. To further clarify the mechanism, experiments were carefully designed to distinguish possible influence factors, and simulations were also performed to provide theoretical supports. The observed phenomenon indicated that the trapping of carriers and the polarization of dielectric both existed in the device, and were involved in the photoelectrical responses. Since the water molecules in the atmosphere had effect on both processes, the observed change in photoelectrical properties could be explained. This work clarified the origin of the novel relationship between the humidity and the photoelectrical response, thus pushed forward the photoelectrical devices to real application.
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