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2011

Newton, Fraser, Kouritzin, Michael

A CAPTCHA is an automatically generated test designed to distinguish between humans and computer programs; specifically, they are designed to be easy for humans but difficult for computer programs to pass in order to prevent the abuse of resources by automated bots. They are commonly seen...

2001

Ballantyne, David, Hoffman, John, Kouritzin, Michael

Particle-based nonlinear filters provide a mathematically optimal (in the limit) and sound method for solving a number of difficult filtering problems. However, there are a number of practical difficulties that can occur when applying particle-based filtering techniques to real world problems....

2012

Yang, Yee-Hong (Herb), Maani, Rouzbeh, Kalra, Sanjay

This paper presents a novel, simple, yet powerful texture analysis method inspired by the well-known Local Binary Patterns (LBP) method called the Local Frequency Descriptors (LFD). Like LBP, the proposed method is invariant to rotation and linear changes of illumination; however,it does not...

2013

Kouritzin, Michael, Wu, B., Newton, F.

Herein, we propose generating CAPTCHAs through random field simulation and give a novel, effective and efficient algorithm to do so. Indeed, we demonstrate that sufficient information about word tests for easy human recognition is contained in the site marginal probabilities and the...

2011-11-30

Murphy, Jeffrey N.

In order to adapt images of patterns templated using block copolymers, acquired using a scanning electron microscope, for publication, an algorithm was developed to process the images, enhancing the darker features in a consistent and easily reproducible manner. This was done using ImageJ, a free...

2015

Plescia, Jeffrey, Ramesh, K.T., Hogan, James, Kimberley, Jamie, Hazeli, Kavan

Knowledge of the relationships between microstructure, stress-state and failure mechanisms is important in the development and validation of numerical models simulating large-scale impact events. In this study, we investigate the effects of microstructural constituent phases and defects on the...

2022-06-01

Zar, H. Ali, Goharimanesh, M., Janabi-Sharifi, F.

In this paper, estimation of the applied force on a planar catheter is considered. An image processing approach has been chosen as the most suitable tool. For this purpose, we create a comprehensive database of catheters with different shapes and operating forces. Using image processing...

Spring 2021

Karabij, Mohamed

Municipal drainage systems have a key role in public health and are considered one of the main components of every modern city's infrastructure. However, as the drainage system ages, its pipes gradually deteriorate at rates that vary based on the different conditions of utilization. To prevent...

Fall 2013

Che, Menglu

It is well known that most information of an image is contained in its edges. Therefore capturing edges in an image is of fundamental importance in image processing. Tensor product real-valued wavelets only capture edges along the horizontal and vertical direc- tions. Hence they are only...

Fall 2017

Kalke, Hayden E

The importance of anchor ice transport of sediment on a river is significantly understudied. This study addresses the lack of data related to anchor ice release and rafting. A large sample set of anchor ice was collected in the field over the 2015-2016 and 2016-2017 winter seasons to compute a...