Polyp Localization and Segmentation in Colonoscopy Images by Means of a Model of Appearance for Polyps

Advisor/s: F. Javier Sánchez, Fernando Vilariño. Date and location of PhD thesis defense: 17 December 2012, Autonomous University of Barcelona.Colorectal cancer is the fourth most common cause of cancer death worldwide and its survival rate depends on the stage in which it is detected on hence the necessity for an early colon screening. There are several screening techniques but colonoscopy is still nowadays the gold standard, although it has some drawbacks such as the miss rate. Our contribution, in the field of intelligent systems for colonoscopy, aims at providing a polyp localization and a polyp segmentation system based on a model of appearance for polyps. To develop both methods we define a model of appearance for polyps, which describes a polyp as enclosed by intensity valleys. The novelty of our contribution resides on the fact that we include in our model aspects of the image formation and we also consider the presence of other elements from the endoluminal scene such as specular highlights and blood vessels, which have an impact on the performance of our methods. In order to develop our polyp localization method we accumulate valley information in order to generate energy maps, which are also used to guide the polyp segmentation. Our methods achieve promising results in polyp localization and segmentation. As we want to explore the usability of our methods we present a comparative analysis between physicians fixations obtained via an eye tracking device and our polyp localization method. The results show that our method is indistinguishable to novice physicians although it is far from expert physicians

Detmold Conference Week 2017

Since 2000 (in the beginning 21st Century) climate change and globalisation have influenced the actual world and all societies tremendously and the have also affected the way we are building. Safety and security requirements are increasing and are consequently influencing the design of the building envelope. ‘Resilience’ describes the function and ability of buildings and their facades to to recover from or adjust easily to change. “Resilience” addresses the impacts of climate change and globalization and of safety and security requirements on the building envelope. The first edition of the Detmold Conference Week 2017 connects education and research, scholars and professionals in different events and formats: a master workshop and two conferences will discuss the approaches of resilient design and construction for buildings and facades. The direct way to specific stresses forced by water, wind, fire, explosion or earthquake but also in an indirect way seen as a general ability of adaptivity to different changes will be discussed at the facade2017 conference on Friday 24th November 2017 from different academic and professional perspectives. The 1st RMB Conference on Thursday 23rd November 2017 is organized by the consortium of the ERASMUS+ project “RMB: Reuse of Modernist Buildings. Design Tools for Sustainable Transformations”. There representatives of the consortium as well as international guest will debate in particular issues of Resilience of Modern Movement Buildings and Neighborhoods. During the conference we will discuss new design and educational concepts for the reuse of modern postwar buildings for housing and other purposes – resilience through reuse. Scholars, PhD and master students present and discuss selected papers and posters

Detmold Conference Week 2017

Since 2000 (in the beginning 21st Century) climate change and globalisation have influenced the actual world and all societies tremendously and the have also affected the way we are building. Safety and security requirements are increasing and are consequently influencing the design of the building envelope. ‘Resilience’ describes the function and ability of buildings and their facades to to recover from or adjust easily to change. “Resilience” addresses the impacts of climate change and globalization and of safety and security requirements on the building envelope. The first edition of the Detmold Conference Week 2017 connects education and research, scholars and professionals in different events and formats: a master workshop and two conferences will discuss the approaches of resilient design and construction for buildings and facades. The direct way to specific stresses forced by water, wind, fire, explosion or earthquake but also in an indirect way seen as a general ability of adaptivity to different changes will be discussed at the facade2017 conference on Friday 24th November 2017 from different academic and professional perspectives. The 1st RMB Conference on Thursday 23rd November 2017 is organized by the consortium of the ERASMUS+ project “RMB: Reuse of Modernist Buildings. Design Tools for Sustainable Transformations”. There representatives of the consortium as well as international guest will debate in particular issues of Resilience of Modern Movement Buildings and Neighborhoods. During the conference we will discuss new design and educational concepts for the reuse of modern postwar buildings for housing and other purposes – resilience through reuse. Scholars, PhD and master students present and discuss selected papers and posters