Equation 16 means that H j I only involves weak classifiers over subwindows that do not intersect with O I. With the evidence vector presented in Equation 15, weak classifiers can now be defined as available or not depending on the occlusion encountered.
Since most engineering AR applications expect to encounter registration and occlusion problems, it is reasonable to solve these challenges and build the solutions into a scalable and extensible AR computing framework that is openly accessible to the community.
The first is that we are working in a video surveillance context in which these two types of occlusions are often encountered.
Acute aortic occlusion is a rarely encountered but frequently fatal emergency, resulting from de novo thrombus formation subjacent to atherosclerotic aortic mucosal lining or the peripheral embolisation of dislodged centrally located thrombus to obstruct a previously healthy aorta.
Similar problems were encountered when referring to the pulmonary artery occlusion pressure [ 25, 26].
Further, Ginsberg et al studied bioabsorbable biliary stents in a porcine model, which remained patent up to 6 months with no bile duct integration or proliferative changes, however, stent occlusion and migration was still encountered [ 24].
Visual tracking usually requires an object appearance model that is robust to changing illumination, partial occlusion, large pose and other factors encountered in video.
Pedestrian gender recognition is a very challenging problem, since the viewpoint variations, illumination changes, occlusion, and poor quality are usually encountered in the pedestrian images.
15– 19 As emphasized earlier, extended calcifications in long segment chronic occlusions or tight stenoses are commonly encountered during angiosome-targeted revascularization.
Major complications of TBA are encountered in about 5% of procedures [ 91] and include vessel rupture, occlusion, dissection, hemorrhagic infarction and hemorrhage from unsecured aneurysms [ 96].
