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Rui Gong
University of Auckland
Belief propagationComputer stereo visionComputer visionStereo camerasComputer science
14Publications
3H-index
32Citations
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Publications 14
Newest
#1Alexander WoodwardH-Index: 2
#1Alexander Woodward (Woodward, Inc.)H-Index: 1
Last. Tetsuo YamamoriH-Index: 26
view all 11 authors...
We describe our connectomics pipeline for processing anterograde tracer injection data for the brain of the common marmoset (Callithrix jacchus). Brain sections were imaged using a batch slide scanner (NanoZoomer 2.0-HT) and we used artificial intelligence to precisely segment the tracer signal from the background in the fluorescence images. The shape of each brain was reconstructed by reference to a block-face and all data were mapped into a common 3D brain space with atlas and 2D cortical flat...
1 CitationsSource
#1Alexander WoodwardH-Index: 2
#2Rui GongH-Index: 3
Last. Noritaka IchinoheH-Index: 20
view all 11 authors...
We describe our connectomics pipeline for processing tracer injection data for the brain of the common marmoset (Callithrix jacchus). Brain sections were imaged using a batch slide scanner (NanoZoomer 2.0-HT) and we used artificial intelligence to precisely segment the anterograde tracer signal from the background in the fluorescence images. The shape of each brain was reconstructed by reference to a block-face and all data was mapped into a common 3D brain space with atlas and 2D cortical flat ...
Source
#1Henrik SkibbeH-Index: 8
#2Akiya WatakabeH-Index: 22
Last. Shin IshiiH-Index: 33
view all 13 authors...
Understanding the connectivity in the brain is an important prerequisite for understanding how the brain processes information. In the Brain/MINDS project, a connectivity study on marmoset brains uses two-photon microscopy fluorescence images of axonal projections to collect the neuron connectivity from defined brain regions at the mesoscopic scale. The processing of the images requires the detection and segmentation of the axonal tracer signal. The objective is to detect as much tracer signal a...
4 Citations
Sep 18, 2017 in ACIVS (Advanced Concepts for Intelligent Vision Systems)
#1Trevor Gee (University of Auckland)H-Index: 3
#2Rui Gong (University of Auckland)H-Index: 3
Last. Georgy Gimel'farb (University of Auckland)H-Index: 26
view all 4 authors...
Estimating the inter-frame motion of a free-moving camera is important for the reconstruction of large 3-D scene from one or more sequences of frames. This work focuses on scenes with a mixture of dynamic and static elements and proposes an approach to improve tracking in existing 3-D reconstruction algorithms, as well as provide a basis for new types of 3-D reconstructions that are able to construct scenes of moving objects. The main strategy adopted in this work is to group feature points with...
Source
#1Alexander Woodward (UTokyo: University of Tokyo)H-Index: 6
#2Yuk Hin Chan (University of Auckland)H-Index: 4
Last. Jorge Flores (UNAM: National Autonomous University of Mexico)H-Index: 7
view all 8 authors...
This work presents a robust, and low-cost framework for real-time marker based 3-D human expression modeling using off-the-shelf stereo web-cameras and inexpensive adhesive markers applied to the face. The system has low computational requirements, runs on standard hardware, and is portable with minimal set-up time and no training. It does not require a controlled lab environment (lighting or set-up) and is robust undervarying conditions, i.e. illumination, facial hair, or skin tone variation. S...
1 CitationsSource
#1Minh Nguyen (AUT: Auckland University of Technology)H-Index: 7
#2Wei Qi Yan (AUT: Auckland University of Technology)H-Index: 18
Last. Patrice Delmas (University of Auckland)H-Index: 12
view all 4 authors...
This paper introduces a fast and reliable Belief Propagation based stereo matching algorithm to be equipped with mobile real-time stereo vision applications; such as autonomous navigation of robots, vehicles, UAVs and drones, mobility aid for visually impaired, and more‥ The algorithm approximates the minimum energy solution on graphical Markov Chains based on intensities of consecutive stereo image scanlines. It can achieve real-time performance (30 frames per seconds) while maintaining accurat...
1 CitationsSource
#1Rui Gong (University of Auckland)H-Index: 3
#2Georgy Gimel'farb (University of Auckland)H-Index: 26
Last. Patrice Delmas (University of Auckland)H-Index: 12
view all 3 authors...
Accurate and fast approximate global energy minimisation with semi-global matching (SGM) reconstructs a single visible 3D surface from a stereo pair of images by combining surface cross-sections, or profiles, found in multiple directions using 1D belief propagation (BP). Each energy measures a mismatch between corresponding signals in the images, which is appended with a weighted unevenness of the surface. To account for frequent in practice perceptive (contrast and offset) image deviations, the...
Source
#1Radu Nicolescu (University of Auckland)H-Index: 11
#2Georgy Gimel'farb (University of Auckland)H-Index: 26
Last. Rui Gong (University of Auckland)H-Index: 3
view all 5 authors...
We propose a novel approach to justify and guide regularisation of an ill-posed one-dimensional global optimisation with multiple solutions using a massively parallel P system model of the solution space. Classical optimisation assumes a well-posed problem with a stable unique solution. Most of important practical problems are ill posed due to an unstable or non-unique global optimum and are regularised to get a unique best-suited solution. Whilst regularisation theory exists largely for unstabl...
2 CitationsSource
Nov 1, 2013 in IVCNZ (Image and Vision Computing New Zealand)
#1Roy Sirui Yang (University of Auckland)H-Index: 2
#2Yuk Hin Chan (University of Auckland)H-Index: 4
Last. Rachel Ababou ('ENS Paris': École Normale Supérieure)H-Index: 1
view all 8 authors...
We investigated calibration procedures of multiple Kinect sensors simultaneously. Through standard calibration algorithms our multi-Kinect system is accurately registered. We propose and implemented a multi-Kinect system to seamlessly render a scene from a wide range of angles. Such a system is capable of real-time operation. We also investigated the problem of inconsistent depth measurement between different Kinect units, and arrived at the same conclusion as the state-of-the-art regarding the ...
14 CitationsSource
Nov 1, 2013 in IVCNZ (Image and Vision Computing New Zealand)
#1Rui Gong (University of Auckland)H-Index: 3
#2Georgy Gimel'farb (University of Auckland)H-Index: 26
Last. Patrice Delmas (University of Auckland)H-Index: 12
view all 4 authors...
To obtain a single best-suited solution, an ill-posed global optimisation problem is regularised. Conventional regularisation, that adds to the goal function a weighed smoothing term, is theoretically justified for linear and a number of non-linear ill-posed mathematical problems. But for inverse optical problems in computer vision such regularisation is mostly heuristic and thus guarantee neither unique, nor visually valid solution. Our recent concurrent propagation algorithm forms and stores i...
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