Fengguang Xiong

North University of China

Sensor data fusion is increasingly crucial in the field of autonomous driving. In sensor fusion research, LiDAR and camera have become prevalent topics. However, accurate data calibration from different modalities is essential for effective fusion. Current calibration methods often depend on specific targets or manual intervention, which are time-c...

This paper presents a robust point cloud registration method based on a multi-scale covariance matrix descriptor and an accurate transformation estimation. Compared with state-of-the-art feature descriptors, such as FPH, 3DSC, spin image, etc., our proposed multi-scale covariance matrix descriptor is superior for dealing with registration problems...

Sketch-based cross-domain visual data retrieval is the process of searching for images or 3D models using sketches as input. Achieving feature alignment is a significantly challenging task due to the high heterogeneity of cross-domain data. However, the alignment process faces significant challenges, such as domain gap, semantic gap, and knowledge...

This paper presents a robust point cloud registration method based on a multi-scale covariance matrix descriptor and an accurate transformation estimation. Comparing with state-of-the-art feature descriptor such as FPH, 3DSC, Spin Image, etc, our proposed the multi-scale covariance matrix descriptor is superior to deal with registration problem und...

Deformable attention only focuses on a small group of key sample-points around the reference point and make itself be able to capture dynamically the local features of input feature map without considering the size of the feature map. Its introduction into point cloud registration will be quicker and easier to extract local geometric features from...

Object detection is a fundamental challenge encountered in understanding and analyzing remote sensing images. Many current detection methods struggle to identify objects in remote sensing images due to poor feature saliency, diverse directions, and unique viewing angles of small remote sensing targets. As most remote sensing images are captured thr...

Zero-shot sketch-based image retrieval (ZS-SBIR) is an extension of sketch-based image retrieval (SBIR) that aims to search relevant images with query sketches of the unseen categories. Most previous methods focus more on preserving semantic knowledge and improving domain alignment performance, but neglect to capture the correlation between inter-m...

Due to the huge difference in the representation of sketches and 3D models, sketch-based 3D model retrieval is a challenging problem in the areas of graphics and computer vision. Some state-of-the-art approaches usually extract features from 2D sketches and produce multiple projection views of 3D models, and then select one view of 3D models to mat...

Current researches on default mode network (DMN) in normal elderly have mainly focused on finding some dysfunctional areas with decreased or increased connectivity. The global network dynamics of apolipoprotein E (APOE) e4 allele group is rarely studied. In our previous brain network study, we have demonstrated the advantage of persistent homology....

Despite the severe social burden caused by Alzheimer’s disease (AD), no drug than can change the disease progression has been identified yet. The structural brain network research provides an opportunity to understand physiological deterioration caused by AD and its precursor, mild cognitive impairment (MCI). Recently, persistent homology has been...

Aiming to problems in the pairwise registration of point clouds, such as keypoints are difficult to describe accurately, corresponding points are difficult to match accurately and convergence speed is slow due to uncertainty of initial transformation matrix, we propose a novel feature descriptor based on ratio of rotational volume to describe effec...

As 3D technologies advance rapidly, 3D printing, 3D animation, and 3D Movie are springing out in different areas. It becomes a remarkable challenge to generate a large number of 3D models effectively and efficiently. This paper proposes a novel editing method based on the feature lines of images (i.e., image contour and principal axis) for generati...

Recent research of persistent homology in algebraic topology has shown that the altered network organization of human brain provides a promising indicator of many neuropsychiatric disorders and neurodegenerative diseases. However, the current slope-based approach may not accurately characterize changes of persistent features over graph filtration b...

There are many problems exist in the process of registration and recognition of keypoints in 3D point cloud, such as finding matching mismatch, large number of mismatched pairs, and the decreasing of registration and recognition precision. A novel removal method of mismatching keypoints is proposed. In the stage of keypoint detection, an edge point...

Aiming at the key point description and repeatability in the method of key point detection of three-dimensional (3D) point cloud is not strong, and the number of detected key points is small, we propose a novet algorithm of key point detection. Firstly, in order to improve the efficiency of the algorithm, the uniform sampling method is used to redu...

A three-dimensional (3D) surface is considered one of the most promising tools for representing and recognizing 3D objects. Therefore, 3D surface matching is widely applied to 3D object recognition, retrieval and so on. In this paper, a 3D surface matching method using a keypoint-based covariance matrix descriptor is proposed, whose purpose is to f...

According to the current status of automatic test system which focuses only on a single or the same type of weapons' performance testing, a networked automatic test system based on message-oriented middleware is proposed in this paper, and inner architecture and process of pus/sub in message-oriented middleware are described. Basing on the message-...

A visual simulation system of fragment warhead missile attacking F-16C ''Falcon'' battleplane based on simulation and virtual reality technology is put forward. Firstly, the overall design of visual simulation of missile attacking F16 battleplane is implemented, and all functions of each module are demonstrated in detailed. Then 3D models in virtua...

Accessing and updating of digital topographic map is an extreme bottleneck in underground pipelines information system (UPIS). According to vast analysis and research, the method of vector metagraph development and embedding is put forward to solve above problem in this paper. The development of vector metagraph is implemented by Visual Basic and M...

According to analyze the importance and problem of telemedicine in this paper, a telemedicine system based on JMF is proposed to design and implement capturing, compression, storage, transmission, reception and play of a medical audio and video. The telemedicine system can solve existing problems that medical information is not shared, platform-dep...

Boolean expression evaluation algorithm is widely used to deal with process control in application systems. But, in the current Boolean expression evaluation algorithm, the name, priority and operation rule of operator are hard-coded in algorithm, which makes some serious problems that the algorithm can not expand its operator and the expansibility...

For the current existence program that programming curricular system is complex but not clear, a programming curricular system, using Java as the core, is proposed in the paper. The teaching objectives, theory and practice of teaching system based on Java in the curricular system is analyzed. According to this curricular system, a teaching reform i...

Synchronized LXI interface defines how to implement time and synchronize of LXI modules on internet, and is the key technology in automatic test system based on LXI. In this paper,character and driving specification of LXI are described, and function and cooperation of LXISyncArm, LXISyncTriggle, LXISyncEvent, LXISyncLog, LXISyncTime subsystem in L...

With the highly rapid increase of information, due to the development of massive application system, more and more people have an urgent need for a simple and rapid technology to integrate data which are stored in various data sources. The integration of heterogeneous data sources has become a central problem of modern computing. According to analy...