RESUMO
The challenge of detecting and tracking moving objects in imaging throughout the atmosphere stems from the atmospheric turbulence effects that cause time-varying image shifts and blur. These phenomena significantly increase the miss and false detection rates in long-range horizontal imaging. An efficient method was developed, which is based on novel criteria for objects' spatio-temporal properties, to discriminate true from false detections, following an adaptive thresholding procedure for foreground detection and an activity-based false alarm likeliness masking. The method is demonstrated on significantly distorted videos and compared with state of the art methods, and shows better false alarm and miss detection rates.
RESUMO
The current approaches to treating articular cartilage defects in the knee comprise a spectrum from pharmacologic therapies to total knee arthroplasty. Nonsurgical treatment can include anti-inflammatory medications, bracing, and physical therapy. Surgical treatments include reconstructive repair of a small or large defect using microfracture, osteochondral autograft transplantation, autologous chrondrocyte transplantation, or osteochondral allograft transplantation; realignment procedures including osteotomies; and unicompartmental arthroplasty. A comprehensive algorithm can be used to determine the appropriate treatment for knee defects.