In this method, like as snakes, there is closed curve which should be within the bounds of the target object.
In contrast to some of the previous work in this area, no explicit model is used to describe the movement of the object; rather, the estimator is constructed based on bounds on the object's velocity, acceleration, and jerk.
During the testing phase, SSD predicts the possibility that each bounding box contains objects is a target object and adjusts the bounding box of the object to accommodate the size.
We can extract the bounding box of the object in the surveillance video, using the background subtraction method of adaptive Gaussian mixture model [16, 17].
The method that uses the centroid computed as the center of gravity of the contour of the objects shows slightly better classification rates than the approach that uses the center of the bounding box of the object.
The current state-of-the-art object detectors employ object proposals to detect objects within a modest set of candidate bounding box proposals instead of exhaustively searching across an image using the sliding window approach.
To prevent these judgments from being based on the 2D bounding contours of the objects, the stimuli from the main experiment in the 3D shaded, shaded-blob, unshaded-blob, uniform-luminance, 3D lattice, uniform-texture, and lattice-aligned conditions were modified so that they all had identical 6.5° circular boundaries (see Figs 14 and 15, insets).
The classic work in this area is John Duncan's demonstration that attention shifts more readily between two locations that fall within the bounds of a single object than between equidistant locations that are separated by an object boundary (Duncan, 1984).
In his pursuit of birds, he wrote triumphantly, "I would find myself furnished with large and powerful wings, and, cleaving the air like an eagle, I would fly off and by a few joyous bounds overtake the objects of my desire".
Let A t be the minimum bounding rectangle of a moving object in frame I t and A t-FR be the minimum bounding rectangle of the moving object in frame I t-FR where FR (fps) is the frame rate of a bootstrapping video sequence.
