Qiong Chang

Dr. Qiong Chang


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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25 July 2018 in IEEE Access
Verified
Journal Article
Open access
QCQiong Chang
Qiong Chang
TMTsutomu Maruyama
Tsutomu Maruyama
Real-time stereo vision is attractive in many areas such as outdoor mapping and navigation. As a popular accelerator in the image processing field, GPU is widely used for the studies of the stereo vision algorithms. Recently, many stereo vision systems on GPU have achieved low error rate, as a result of the development of deep learning. However, their processing speed is normally far from the real-time requirement. In this paper, we propose a real-time stereo vision system on GPU for the high-resolution images. This system also maintains a low error rate compared with other fast systems. In our approach, the image is resized to reduce the computational complexity and to realize the real-time processing. The low error rate is kept by using the cost aggregation with multiple blocks, secondary matching and sub-pixel estimation. Its processing speed is 41 fps for 2888×1920 pixels images when the maximum disparity is 760.

1 February 2022 in Journal of Systems Architecture
Verified
Journal Article
Closed access
QCQiong Chang
Qiong Chang
AZAolong Zha
Aolong Zha
WWWeimin Wang
Weimin Wang
XLXin Liu
Xin Liu
MOMasaki Onishi
Masaki Onishi
TMTsutomu Maruyama
Tsutomu Maruyama

1 January 2021 in Research
Verified
Journal Article
Open access
PDF file
MPMengjiao Pei
Mengjiao Pei
CWChangjin Wan
Changjin Wan
QCQiong Chang
Qiong Chang
JGJianhang Guo
Jianhang Guo
SJSai Jiang
Sai Jiang
YLYun Li
Yun Li
Associative learning is a critical learning principle uniting discrete ideas and percepts to improve individuals’ adaptability. However, enabling high tunability of the association processes as in biological counterparts and thus integration of multiple signals from the environment, ideally in a single device, is challenging. Here, we fabricate an organic ferroelectric neuromem capable of monadically implementing optically modulated associative learning. This approach couples the photogating effect at the interface with ferroelectric polarization switching, enabling highly tunable optical modulation of charge carriers. Our device acts as a smarter Pavlovian dog exhibiting adjustable associative learning with the training cycles tuned from thirteen to two. In particular, we obtain a large output difference (>10 3 ), which is very similar to the all-or-nothing biological sensory/motor neuron spiking with decrementless conduction. As proof-of-concept demonstrations, photoferroelectric coupling-based applications in cryptography and logic gates are achieved in a single device, indicating compatibility with biological and digital data processing.

15 June 2021 in Neural Computing and Applications
Verified
Journal Article
Closed access
PDF file
RDRan Dong
Ran Dong
QCQiong Chang
Qiong Chang
SISoichiro Ikuno
Soichiro Ikuno

26 February 2023 in Advanced Sensor Research
Verified
Journal Article
Open access
KLKuakua Lu
Kuakua Lu
LLLongfei Li
Longfei Li
SJSai Jiang
Sai Jiang
XCXu Chen
Xu Chen
QCQiong Chang
Qiong Chang
YLYun Li
Yun Li
Bioinspired organic sensors with excellent flexibility, biocompatibility, sensing performance, and self‐adaptability have attracted considerable attention due to their fundamental role in next‐generation intelligent sensory systems with simultaneous sensing and processing functions, such as advanced robots, disease diagnosis, Internet of Things, human–robot interaction systems, and beyond. The design of advanced bioinspired organic sensors requires a deep understanding of the interplay between the unique material property, sensing mechanism as well as intelligent functionality. Here, the recent progress of bioinspired organic sensors for artificial perceptron covering visual, tactile, and other bionic sensors from the view of materials, sensing mechanisms, and functionality, is summarized. Furthermore, the intelligent applications of bioinspired organic sensors, including associative learning, information security, electronic skin, and integrated artificial sensory systems, are presented. Finally, the potential challenges and prospects of bioinspired organic sensors are discussed, providing a promising avenue toward advanced bioinspired organic sensors for future‐oriented intelligent applications.

22 May 2024 in IEEE Transactions on Systems, Man, and Cybernetics: Systems
Verified
Journal Article
Closed access
QCQiong Chang
Qiong Chang
XXXin Xu
Xin Xu
AZAolong Zha
Aolong Zha
Meng Joo ErMeng Joo Er
Meng Joo Er
ENEisei Nakahara
Eisei Nakahara
YLYun Li
Yun Li
Stereo vision, a popular depth estimation technology in computing vision, finds wide-ranging applications in embedded systems, including robotics vision and autonomous driving. These applications demand both high accuracy and fast processing speeds. To address hardware limitations, most current embedded systems rely on nonlearning algorithms for fast matching, sacrificing accuracy. Some recent studies have explored using convolutional neural networks (CNNs) to improve matching accuracy, but the computational load of existing learning-based systems hampers real-world applicability. This article presents significant contributions: 1) a novel stereo matching framework that greatly enhances accuracy on real-time embedded platforms and 2) a two-pronged approach combining a nonlearning-based algorithm and a lightweight super-resolution residual neural network (sRRNet). The nonlearning-based algorithm yields a low-resolution disparity map, while the lightweight sRRNet generates a high-resolution disparity map. Experimental results on benchmark data demonstrate that the proposed method achieves a low matching error rate of 5.17% and a real-time processing speed of 51 fps using the embedded Jetson AGX GPU. The proposed method outperforms all existing real-time embedded systems.