Name: Boguslaw Obara
Profile: AI & Imaging Data Scientist, Innovator, & Consultant. Entrepreneur. Football, chocolate & travel nut.
Email: boguslaw [dot] obara [AT] newcastle [dot] ac [dot] uk
Research and Professional SkillsImage Processing 95%
Boguslaw Obara (BO) is a Professor of Image Informatics in the School of Computing and Dean of Business, Innovation and Skills at Newcastle University. Turing Fellow at The Alan Turing Institute. He obtained a first master degree in computational physics from Jagiellonian University and PhD in Image Processing from AGH University of Science and Technology.
Before joining Newcastle University as Professor; he held research assistant positions at Polish Academy of Sciences and at Computer Vision Laboratory, ETH, Fulbright Fellowship at Vision Research Laboratory, postdoctoral positions at Center for BioImage Informatics, University of California, and at Oxford e-Research Centre, University of Oxford, and assistant, associate and professor positions at Department of Computer Science at Durham University. BO was also AstraZeneca Visiting Professor in Image Processing & Artificial Intelligence.
BO's research focuses on the design and implementation of complex image analysis and processing, pattern recognition, computer vision and machine learning solutions applied to a wide range of domains.
- Core members:
- Matthew James Anderson
- Burak Kucukgoz
- Joseph Smith
- Amar Rajgor
- Ak Muhammad Rahimi Pg Hj Zahari
- Associate members:
- Ethar Alzaid
- Anna Bator
- Aaron Brooks
- Ayse Betul Cengiz
- Karoline Leiberg
- Knectt Paulschoh Lendoye
- Yen Lau
- Ross Laws
- Qurat-ul-ain Mubarak
- George Paul
- Mahsa Vali
- Dr Mutlu Yapici, Ankara University, Turkey.
- Dr Juan Ojeda Garcia, Spain.
- Dr Agnieszka Stankiewicz, Poznan University of Technology, Poland.
- Srinivas Iyengar, Indian Institute of Technology, India.
- Nirmal Kumawat, Indian Institute of Technology, India.
- Zeinab Almahdi Mohammed Haroon, African Institute for Mathematical Sciences, South Africa.
- Mayank Patel, Indian Institute of Technology, India.
- Prof. Caiyun Wang, Nanjing University of Aeronautics and Astronautics, China.
- Romaissa Mekhzouni, ENSTA ParisTech, France.
- Yagiz Batu Saatci, Antalya Bilim University, Turkey.
- Agnieszka Stankiewicz, Poznan University of Technology, Poland.
- Cesar Alberto Cigarroa Constantino, Universidad Politecnica de Chiapas, Mexico.
- Prof. Mark Fricker, Oxford University, UK.
- Dr Bartosz Ziółko, AGH University of Science and Technology, Poland.
- Prof. Stéphanie Portet, University of Manitoba, Canada.
- Agnieszka Karpińska, Cracow University of Technology, Poland.
- Dr Bartosz Schramm, Jagiellonian University, Poland.
- Dr Geng Sun
Image Formation and Digitization
Image acquisition is the first step of digital image processing and is often not properly taken into account. Quantitative analysis of any images requires a good understanding of the image formation and digitization process.
Image Processing and Pattern Recognition
Pattern recognition is used to automatically extract meaningful features from digital images. Over the past years, our team has proposed a wide range of novel image informatics approaches for blob, network, and surface patterns recognition in multi-type, -scale, -dimensional imaging datasets.
Best Practices for Image-Driven Solutions
Over the past years, our team has focused on standardisation, integrity, and quality of image-driven information and processes, from imaging data acquisition, storing, sharing, annotation, processing, to analytics.
Radiologists should have complete confidence in the prediction of the model during the screening. Therefore, to address this issue, we have developed an uncertainty-aware model framework not only to classify lung cancer nodules from 3D computed tomography images, but also to estimate the associated uncertainty in the prediction of the model.
We evaluate the quality of diabetic macular edema (DME) intraretinal fluid (IRF) biomarker image annotations on OCT B-scans from five clinicians with a range of experience. Our investigation shows a notable variance in annotation performance, with a correlation that depends on the clinician's experience with OCT image interpretation of DME.
Our co-registration of Hematoxylin and Eosin (H&E), Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS), and Imaging Mass Cytometry (IMC) images provides complementary information about the cellular and molecular characteristics of cancer tissue, enabling a more comprehensive understanding of the disease.
We design a new benchmark for the segmentation of the retinal external limiting membrane (ELM) using an image dataset of spectral domain optical coherence tomography (OCT) scans in a patient population with idiopathic full-thickness macular holes. Then, we compared qualitative and quantitative results with seven state-of-the-art machine learning-based segmentation methods to identify the ELM line with an automated system.
The objectives of this project are to develop and assess novel image analysis techniques of 3D OCT scans for volumetric assessment of different morphological patterns in diabetic macular oedema (DMO) such as: 1) Overall volume of the generalised outer retinal thickening in early DMO. 2) Volume of accumulated serous fluid under the neurosensory retina (SRF). 3) Residual volume of retinal tissue passing between the inner and outer plexiform retinal layers, which is an optimal measurement of potential residual macular function.
Saprotrophic fungi are critical in ecosystem biology as they are the only organisms capable of complete degradation of wood in temperate forests. The architecture of the network continuously adapts to local nutritional cues, damage or predation, through growth, branching, fusion or regression. We propose an image processing approach for fungal network segmentation and graph-based analysis.
A 3D/4D cytoskeletal network may contain thousands of nodes and connections, in specific but variable geometric organisations which vary with time. Such data exceeds the capacity of human analysis, creating a barrier, which can only be overcome with robust, automated image analysis and informatics tools to extract, characterise and model networks.
Graph embedding techniques aim to automatically create a low-dimensional representation of a given graph, which captures key structural elements in the resulting embedding space. We demonstrate that several topological features are indeed being approximated by the embedding space, allowing key insight into how graph embeddings create good representations.
The local Gaussian distribution fitting energy model is a state-of-the-art method, capable of segmenting inhomogeneous objects with poorly defined boundaries, but it is computationally expensive. In our approach, we port the energy functional to the GPU, and introduce a novel set of interactive brush functions to segment challenging datasets where an active contour would not ordinarily capture the target object.
This project focuses on a robust method for extracting a natural interpolating 3D piecewise cubic spline from a 2D input image of a helix object. We are able to use the generated spline to extract 3D metrics such as tortuosity and curvature. The algorithm analytically chooses locations to sample the image to extract properties of the curve, such as its amplitude and perpendicular width, to ensure robustness. The generated 3D spline has few input parameters, and only requires a single view of the 2D dataset, making it suitable for a range of applications in engineering, physics, and biology.
Projects focuses on big data challenges including capturing data, data storage, data analysis, search, sharing, transfer, visualization, querying, updating and information privacy.
The colocalization technique is important to many cell biological and physiological studies during the demonstration of a relationship between pairs of bio-molecules.
Research, development and application of a wide range of machine learning models to perform classification tasks directly from images, text, or sound. Models are trained by using a large set of labeled data and neural network architectures that contain many layers.
We introduce a new method for the detection of parametrisable shapes in N dimensions; this method has been developed for ellipses and uses simple morphological operations, building on aspects of granulometry and signal processing techniques. With this method it is possible to easily extract the position, size and rotation of elliptical objects in any image data. This method is low parameter, accurate and robust to noise and object clustering in greyscale images; key contributions are the abiltiy to find an unknown number of ellipses with no a priori information and no arbitrary thresholding and robustness to both noise and clustering.
In this project we demonstrate the evolution of a disordered composite material, using voltages as the external stimuli, into a form where a simple computational problem can be solved. The material consists of single-walled carbon nanotubes suspended in liquid crystal; the nanotubes act as a conductive network, with the liquid crystal providing a host medium to allow the conductive network to reorganise when voltages are applied. We show that the application of electric fields under computer control results in a significant change in the material morphology, favouring the solution to a classification task.
Differential interference contrast microscopy plays an important role in modern bacterial cell biology. We have developed and evaluated a high-throughput image analysis and processing approach to detect and characterize bacterial cells and chemotaxis proteins. Its performance was evaluated using differential interference contrast and fluorescence microscopy images of Rhodobacter sphaeroides.
Fungi cause devastating plant and human diseases. There is considerable evidence that much of the cellular machinery driving growth of invasive fungal hyphae is common across all fungi, including plant and mammalian pathogens, and involves localized tip growth. We have developed and evaluated high-throughput automated microscope-based multi-dimensional image analysis systems to segment and characterize fungal growth, and characterize the patterns of protein localization within the tip that control development.
A method to automatically segment notochord cell boundaries from differential interference contrast (DIC) timelapse images of the elongating ascidian tail. The method is based on a specialized parametric active contour, the network snake, which can be initialized as a network of arbitrary but fixed topology and provides an effective framework for simultaneously segmenting multiple touching cells.
Identification, description and quantification of the cell behavior observed by time-lapse confocal microscopy Research, development and implementation of novel 4D image analysis and processing methods for identification, description and quantification of the cell behavior (protrusion, adhesion and invasion), as observed by time-lapse confocal microscopy.
Runways are vital descriptive features of airports and knowledge of their location is important to many aviation and military applications. With the recent wide availability of remote sensing data, there is demand for an automatic process of extracting runway geometry from satellite imagery. In this project we establish a novel method for accurate and precise extraction of geometric polygons for an arbitrary number of runways in VHR remote sensing imagery.
Bisque provides a platform for data sharing, flexible metadata management, and integrated extensible image analysis and processing. Bisque system is used by many research and commercial institutions including: 1) iPlant: a community of researchers, educators, and students working to enrich all plant sciences through the development of cyberinfrastructure that are essential components of modern biology. 2) Pfizer - The Pfizer Neuroscience Research Unit is developing quantitative methods that process the images, keeping track of the processing workflow, and allowing scientists to create new work flows that seamlessly combine multimodal data.