In this paper, a hierarchical image matting model is proposed to extract blood vessels from fundus images. More specifically, a hierarchical strategy utilizing the continuity and extendibility of retinal blood vessels...
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Cardiac CT(CCT) is widely available and has been validated for the detection of focal myocardial scar using a delayed enhancement technique in this ***,however,has not been previously evaluated for quantification of d...
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Cardiac CT(CCT) is widely available and has been validated for the detection of focal myocardial scar using a delayed enhancement technique in this ***,however,has not been previously evaluated for quantification of diffuse myocardial *** our investigation,we sought to evaluate the potential of low-dose CCT for the measurement of myocardial whole heart extracellular volume(ECV) *** is altered under conditions of increased myocardial fibrosis.A framework consisting of three main steps was proposed for CCT whole heart ECV ***,a shape-constrained graph cut(GC) method was proposed for myocardium and blood pool segmentation on postcontrast ***,the symmetric demons deformable registration method was applied to register precontrast to postcontrast *** the correspondences between the voxels from precontrast to postcontrast images were ***,the whole heart ECV value was *** proposed method was tested on 20 clinical low-dose CCT datasets with precontrast and postcontrast *** preliminary results demonstrated the feasibility and efficiency of the proposed method.
This paper conducts a survey of modern binary pattern flavored feature extractors applied to the Facial Expression Recognition (FER) problem. In total, 26 different feature extractors are included, of which six are se...
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ISBN:
(纸本)9781479981748
This paper conducts a survey of modern binary pattern flavored feature extractors applied to the Facial Expression Recognition (FER) problem. In total, 26 different feature extractors are included, of which six are selected for in depth description. In addition, the paper unifies important FER terminology, describes open challenges, and provides recommendations to scientific evaluation of FER systems. Lastly, it studies the facial expression recognition accuracy and blur invariance of the Local Frequency Descriptor. The paper seeks to bring together disjointed studies, and the main contribution is to provide a solid overview for future research.
Gliomas are the most common primary brain malignancies, with different degrees of aggressiveness, variable prognosis and various heterogeneous histologic sub-regions, i.e., peritumoral edematous/invaded tissue, necrot...
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