SInCom 2015

2nd Baden-Württemberg Center of Applied Research Symposium on Information and Communication Systems, SInCom 2015, 13. November 2015 in Konstan

DSA image registration using non-uniform MRF model and pivotal control points

In order to reduce the motion artifacts in DSA, non-rigid image registration is commonly used before subtracting the mask from the contrast image. Since DSA registration requires a set of spatially non-uniform control points, a conventional MRF model is not very efficient. In this paper, we introduce the concept of pivotal and non-pivotal control points to address this, and propose a non-uniform MRF for DSA registration. We use quad-trees in a novel way to generate the non-uniform grid of control points. Our MRF formulation produces a smooth displacement field and therefore results in better artifact reduction than that of registering the control points independently. We achieve improved computational performance using pivotal control points without compromising on the artifact reduction. We have tested our approach using several clinical data sets, and have presented the results of quantitative analysis, clinical assessment and performance improvement on a GPU. (C) 2013 Elsevier Ltd. All rights reserved

A Call for Change: Minnesota Environmental Justice Heroes in Action

This book provides a brief introduction to the lives and work of Minnesota residents who advocate for Environmental Justice. Their stories were captured in interviews conducted by Macalester College students in Spring 2018, 2019 and 2020. The work featured in this volume covers a broad span, showcasing the depth and breadth of Environmental Justice. More importantly, this book celebrates the extraordinary everyday people who chose to take action in the face of injustice. While their approaches to Environmental Justice work are diverse, they are united in their persistence and their creativity.https://digitalcommons.macalester.edu/books/1005/thumbnail.jp