Video monitoring system for multi-target tracking close-up shooting
A technology of video surveillance system and camera system, which is applied in CCTV systems, components of TV systems, TVs, etc., to optimize extraction and tracking methods, improve quality and performance, and reduce costs
Active Publication Date: 2014-01-15
AQUILLANETWORKTECH
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Problems solved by technology
However, all existing technologies, including these two patent documents, still have many unsolved problems and deficiencies in terms of effectively realizing precise interaction and control between different camera systems
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[0022] Figure 1 to Figure 3 The basic composition of the multi-target tracking video monitoring system according to the present invention is described in combination, such as figure 1 As shown, the video monitoring system of the present invention includes two groups of camera systems 1, 2, and is controlled by at least one group of control systems 3. Wherein, the first camera system 1 may include one or more cameras, covering the large scene field of view to be monitored, providing a wide-angle video with a general resolution and sending it to the first display device of the monitoring system for display, such as figure 2 the left screen in the diagram of or image 3 As shown in the screen shot on the left side of the screen shot of the display; the second camera system 2 includes one or more PTZ cameras, which have an adjustable field of view and cover a part of the field of view of the large scene, and are optically amplified and sent to the The second display device of ...
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The present invention provides a video monitoring system, which comprises: a first shooting system which includes one or more cameras for shooting a wide-angle video in a large-scene vision field, a second shooting system which includes one or more Pan / Tilt / Zoom (PTZ) cameras for shooting a local video in a large-scene vision field, and a control system. The control system comprises: an image collecting module for receiving the wide-angle video shot by the first shooting system; a foreground extraction module for extracting an interested target from the wide-angle video; and a coordinates converting module for using a coordinates conversion mechanism to convert two-dimensional coordinates (x, y) on an image plane of the wide-angle video shot by the first shooting system, wherein the two-dimensional coordinates (x, y) are projected from any point shot by the first shooting system in a large-scene vision field, into a vertical height angle ? and a horizontal azimuth angle f of a selected PTZ camera in the second shooting system, when the picture center of the selected PTZ camera aims at the point; wherein the coordinates conversion mechanism is established by at least three random points selected randomly in the large-scene vision field.
Description
technical field [0001] The present invention mainly relates to the technical field of intelligent video monitoring, in particular to a video monitoring system composed of a first camera system for shooting a large scene, a control system for tracking multiple targets in it, and a second camera system for close-up shooting of each tracking target system. Background technique [0002] In many applications, it is necessary to perform video surveillance on a large scene range, and the usual practice is to use a small number of wide-angle cameras to cover a large scene. Due to the wide angle of view of the wide-angle camera and the limitation of the resolution of the image sensor, the resolution of the specific target objects in the captured large scenes is generally low, and it is difficult to obtain the details of the target objects from the captured images information. [0003] One of the existing solutions is to use a large number of distributed fixed cameras with long foca...
Claims
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IPC IPC(8): H04N7/18G06T7/00
CPCG06T7/2093G06T2207/10016G08B13/19643H04N7/181H04N5/247G08B13/19608G06T2207/30232H04N5/232G06T7/292H04N23/63H04N23/695H04N23/90
Inventor 张昕刘海川楼冬明
Owner AQUILLANETWORKTECH