Research Areas and Topics

Computer Graphics

Current projects in the field of graphics and real-time rendering include markerless 3D motion estimation from videos, artistic style characterization for non-photorealistic rendering applications, visually realistic simulation of complex underwater environments, accurate 3D mesh reconstructions of lung/brain anatomy from HRCT/MRI image stacks, and applications of dual-quaternions in skeletal animation.

Image Analysis

The research group is currently involved in several collaborative projects with clinicians and radiologists. Key research areas are analysis of whole slide images (WSI) of breast cancer histology slides, mRNA tissue micro-array analysis using BRCA1, BRCA2 biomarkers, ultrasound image analysis algorithms for speckle reduction, feature enhancement and classifcation, digital mammogram image analysis using multifractal descriptors, and MRI image analysis and segmentation algorithms for Parkinson's disease characterization.

Classification

A very important problem in the field of digital pathology is the automated classifcation of images for computer aided diagnosis of diseases. We are currently working on several machine learning algorithms for HER2 classification in breast cancer histology slides using biomarker specific features. Other algorithms being studied are emphysema classification in HRCT images, and characterizations of microcalcifications in digital mammogram images.

News

2019
Ph.D Completion
  • Jan 2019: Tieta Putri successfully completed the oral examination and qualified for the award of the Ph.D degree.
Journal Papers
  • R. Mukundan, "Analysis of Image Feature Characteristics for Automated Scoring of HER2 in Histology Slides", Journal of Imaging, 5(3), 2019.
  • Ori Ganoni, "A Generalized Simulation Framework for Tethered Remotely Operated Vehicles in Realistic Underwater Environments", Drones, 3(1), 2019.
Conference Papers
  • Prerna Singh, "Feature Enhancement of Medical Ultrasound Videos Using Multifractal and Adaptive Histogram Equalization Techniques", MIPR-2019, San Jose, California, 28-30 Mar 2019.
Prizes/Awards
  • Ori Ganoni, Journal paper selected as cover story for Drones Journal, Vol.3, No.1, 2019. Cover Image, Story.

2018
Conference Presentations
  • Dibash Basukala, "Segmentation of Substantia Nigra for the automated characterization of Parkinson's Disease", IPAS-2018, Nice, France, 12-14 Dec 2018.
  • Tieta Putri, "Neutrosophic Extraction of Vincent van Gogh's Visible Brushstrokes", IVCNZ-2018, Auckland: New Zealand, 19-21 Nov 2018.
  • Dibash Basukala, "Segmentation of Substantia Nigra using Weighted Thresholding Method", IVCNZ-2018, Auckland: New Zealand, 19-21 Nov 2018.
  • Prerna Singh, "Enhanced Steerable Pyramid Transformation for Medical Ultrasound Image Despeckling", MMSP-2018, Vancouver, Canada, 29-31 Aug 2018.
  • Ori Ganoni, "Visually Realistic Plankton Models for Simulating Underwater Environments", IV-2018, Salerno, Italy, 10-13 July 2018.
  • R. Mukundan, "Feature Analysis of Biomarker Descriptors for HER2 Classification of Histology Slides", MIUA-2018, Southampton, UK, 9-11 July 2018.
  • Prerna Singh, "A Novel Ultrasound Image Enhancement Algorithm Using Cascaded Clustering on Wavelet Sub-bands", ISSC-2018, Belfast, Ireland, 21-22 June 2018.
  • Ori Ganoni, "Visually Realistic Graphical Simulation of Underwater Cable", WSCG-2018, Plzen: Czech Republic, 28 May - 1 June 2018.
Journal Papers
  • R. Mukundan, "Image Features Based on Characteristic Curves and Local Binary Patterns for Automated HER2 Scoring", Journal of Imaging, 4(2), 2018.
  • Prerna Singh, "Texture Based Quality Analysis of Simulated Synthetic Ultrasound Images Using Local Binary Patterns", Journal of Imaging, 4(1), 2018.
  • R. Mukundan, "HER2 Challenge Contest: A Detailed Assessment of Automated HER2 Scoring Algorithms in Whole Slide Images of breast cancer tissues", Histopathology, 72(2), 2018.
Prizes/Awards
  • Ori Ganoni, 1st Prize, Ph.D Presentations, "Visually Realistic Simulation of Remotely Operated Underwater Vehicles", Computer Science and Software Engineering Postgraduate Conference, CSSE, UC, Christchurch, 06 Sep 2018.
  • Prerna Singh, MMSP-2018 Top 5% Paper Award, IEEE Signal Processing Society, Vancouver, Canada, 30 Aug 2018.

2017
Ph.D Completion
  • May 2017: Huidong Bai successfully completed the oral examination and qualified for the award of the Ph.D degree.
  • Aug 2017: Musibau Ibrahim successfully qualified for the award of the Ph.D degree.
Conference Presentations
  • Tieta Putri, "Artistic Style Characterization of Vincent Van Gogh's Paintings using Extracted Features from Visible Brush Strokes", ICPRAM-2017, Porto: Portugal, 24-26 Feb 2017, pp. 378-385.
  • Prerna Singh, "Synthetic Models of Ultrasound Image Formation for Speckle Noise Simulation and Analysis", ICSigSys-2017, Bali: Indonesia, 16-18 May 2017.
  • Huyuan Shangguan, "Video Based Motion Capture in Environments with Non-Stationary Background", ICSigSys-2017, Bali: Indonesia, 16-18 May 2017.
  • Ori Ganoni, "A Framework for Visually Realistic Multi-robot Simulation in Natural Environments", WSCG-2017, Plzen: Czech Republic, 29 May - 2 June 2017.
  • Prerna Singh, "Modelling, Speckle Simulation and Quality Evaluation of Synthetic Ultrasound Images", MIUA-2017, University of Edinburgh: UK, 11-13 July 2017.
  • Mukundan, R, "A Robust Algorithm for Automated HER2 Scoring in Breast Cancer Histology Slides Using Characteristic Curves", MIUA-2017, University of Edinburgh: UK, 11-13 July 2017.
  • Ori Ganoni, "A Multi Sensory Approach Using Error Bounds for Improved Visual Odometry", Image and Vision Computing NZ Conference, IVCNZ-2017 Christchurch, New Zealand.
  • Tieta Putri, "Artistic Style Characterization and Brush Stroke Modelling for Non-Photorealistic Rendering", Image and Vision Computing NZ Conference, IVCNZ-2017 Christchurch, New Zealand.
  • Huyuan Shangguan, "3D Video-based Motion Capture using Convolutional Neural Networks", Image and Vision Computing NZ Conference, IVCNZ-2017 Christchurch, New Zealand.
  • Prerna Singh, "Quality Analysis Of Synthetic Ultrasound Images Using Co-Occurrence Texture Statistics", Image and Vision Computing NZ Conference, IVCNZ-2017 Christchurch, New Zealand.
Journal Papers
  • Mukundan, R, "Contour Based High Resolution 3D Mesh Construction Using HRCT and MRI Stacks.", IJMDEM Journal, IGI Global, USA, Vol. 8, 2017.
Prizes/Awards