Sökning: "computer aided detection"

Visar resultat 1 - 5 av 27 avhandlingar innehållade orden computer aided detection.

1. 1. Towards Automatic Image Analysis for Computerised Mammography

   Författare :Christina Olsén; Frank Drewes; Fredrik Georgsson; Gunilla Borgefors; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Aided Diagnosis; Quality Assessment; Image Analysis; Ground Truth Assessment; Artificial Intelligence; Measurements; Segmentation Evaluation; Performance Measures; Pattern Recognition; Validation; Decision Support; Medicine; Computer science; Datavetenskap;

   Sammanfattning : Mammographic screening is an effective way to detect breast cancer. Early detection of breast cancer depends to a high degree on the adequacy of the mammogram from which the diagnosis is made. Today, most of the analysis of the mammogram is performed by radiologists. LÄS MER

3. 2. Computer-aided detection and novel mammography imaging techniques

   Författare :Hans Bornefalk; Mats Danielsson; Robert Nishikawa; KTH; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; computer-aided detection; FROC; mammography; optimal operating points; single-shot dual-energy imaging; Radiological physics; Radiofysik;

   Sammanfattning : This thesis presents techniques constructed to aid the radiologists in detecting breast cancer, the second largest cause of cancer deaths for western women. In the first part of the thesis, a computer-aided detection (CAD) system constructed for the detection of stellate lesions is presented. LÄS MER

4. 3. Resampling Evaluation of Signal Detection and Classification : With Special Reference to Breast Cancer, Computer-Aided Detection and the Free-Response Approach

   Författare :Anna Bornefalk Hermansson; Rolf Larsson; Ulf Olsson; Dankmar Böhning; Uppsala universitet; []
   Nyckelord :Statistics; breast cancer; trend modelling; FROC; confidence intervals; threshold independence; bootstrap; kernel density estimation; mammography; computer-aided detection; Statistik;

   Sammanfattning : The first part of this thesis is concerned with trend modelling of breast cancer mortality rates. By using an age-period-cohort model, the relative contributions of period and cohort effects are evaluated once the unquestionable existence of the age effect is controlled for. LÄS MER

5. 4. Local visual feature based localisation and mapping by mobile robots

   Författare :Henrik Andreasson; Achim Lilienthal; Jim Little; Örebro universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mobile robotics; registration; localisation; SLAM; mapping; omnidirectional vision; 3D vision; appearance based; TECHNOLOGY; TEKNIKVETENSKAP; Computer science; Datavetenskap; Computer and Systems Science; Data- och systemvetenskap;

   Sammanfattning : This thesis addresses the problems of registration, localisation and simultaneous localisation and mapping (SLAM), relying particularly on local visual features extracted from camera images. These fundamental problems in mobile robot navigation are tightly coupled. LÄS MER

7. 5. Robot-aided Gas Sensing for Emergency Responses

   Författare :Han Fan; Achim Lilienthal; Erik Schaffernicht; Victor Hernandez Bennetts; Saverio De Vito; Örebro universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Emergency response personnel can be exposed to various extreme hazards during the response to natural and human-made disasters. In many of the scenarios, one of the risk factors is the presence of hazardous airborne chemicals. LÄS MER