New PDF release: Robust Motion Detection in Real-Life Scenarios

By Ester Martínez-Martín, Ángel P. del Pobil

ISBN-10: 1447142152

ISBN-13: 9781447142157

ISBN-10: 1447142160

ISBN-13: 9781447142164

This paintings proposes a whole sensor-independent visible approach that gives powerful objective movement detection. First, the way in which sensors receive pictures, by way of solution distribution and pixel neighbourhood, is studied. this enables a spatial research of movement to be performed. Then, a unique history upkeep process for strong aim movement detection is carried out. diverse events are thought of: a set digital camera watching a continuing history the place gadgets are relocating; and a nonetheless digicam watching gadgets in move inside a dynamic historical past. This contrast lies on constructing a surveillance mechanism with out the constraint of watching a scene freed from foreground components for a number of seconds while a competent preliminary history version is acquired, as that scenario can't be assured while a robot procedure works in an unknown setting. different difficulties also are addressed to effectively take care of alterations in illumination, and the excellence among foreground and historical past elements.

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The main reason lies on the similarity between the pixel intensities since CoD algorithm works at pixel level. Then, a global illumination change takes place by slightly darkening the scene. 36 2 Motion Detection in Static Backgrounds Fig. 19 Qualitative results over color perspective images such that a person is continuously entering and leaving our laboratory room. So, the first row shows the original frame of the sequence, whereas the last two rows illustrate the segmentation result obtained by the CoD approach: a binary image representing the background/foreground classification carried out, such that background is represented by black color and foreground pixels are coded in white; and a color image, where the foreground elements appear as in the original frame, whereas background is coded in an artificial, homogeneous color At this point, the approach’s performance is more accurate by providing less false negatives.

Then, while the foreground pixels can be processed by applying a tracking method or a recognition module depending on the particular task to be achieved, the pixels classified as background are incorporated into the adaptive background model. 9) t Here, the constant α (0 < α < 1) is the learning rate used in the Gaussian model. 0/N . Note that α value controls the speed at which the model adapts to changes. Its small value when a lot of samples are considered, makes the Gaussian distribution adapt too slowly to background changes as shown in Fig.

So, the left hole is properly covered with the new background. Then, when it is located at the new position, it is adequately identified as a background element, as it can be observed. 3 Experimental Results 37 Fig. 20 Qualitative results over gray-scale perspective images such that a person is continuously entering and leaving our laboratory room. 2 Fisheye Image Experiments In this section, the CoD’s performance is assessed over fisheye images. 1 mm CSMount lens was used [30, 31]. At this instance, the fisheye camera was located at the center of another laboratory room, pointing upwards, by monitoring the presence of an individual around the visual system.

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Robust Motion Detection in Real-Life Scenarios by Ester Martínez-Martín, Ángel P. del Pobil


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