A quick group search optimizer (QGSO) is an intelligent optimization algorithm which has been applied in structural optimal design, including the hinged spatial structural system. The accuracy and convergence rate of QGSO are feasible to deal with a spatial structural system. In this paper, the QGSO algorithm optimization is adopted in seismic research of steel frames with semi-rigid connection...

motion analysis and quality assessment of human sperm cell is of great importance for clinical applications of male infertility. sperm tracking is quite complex due to cell collision, occlusion and missed detection. the goal of this study is simultaneous tracking of multiple human sperm cells. in the first step in this research the frame difference algorithm is used for background subtraction. ...

Frame level background subtraction algorithms are widely used in real-time computer vision systems because of their simplicity and efficiency. Besides the ordinary reference frame subtraction algorithm and double difference algorithm, a hybrid algorithm: reference frame subtraction double difference algorithm, has been proposed recently. In this research, an algorithm of synthesizing video clip...

This paper presents a method for obtaining accurate dense elevation and appearance models of terrain using a single camera on-board an aerial platform, which has many applications including geographical information systems, robot path planning, immersion and visualization, and surveying for scientific purposes such as watershed analysis. When given geo-registered images, the method can compute ...

Signal expansions using frames may be considered as generalizations of signal representations based on transforms and filter banks. Frames, or dictionaries, for sparse signal representations may be designed using an iterative algorithm with two main steps: (1) Frame vector selection and expansion coefficient determination for signals in a training set, selected to be representative of the signa...