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Object tracking device and method of operation thereof

A technology of tracking device and operation method, which is applied in the direction of closed-circuit television system, etc., can solve the problems of untraceability and inability to effectively eliminate background noise, and achieve the effect of noise elimination

Active Publication Date: 2017-11-24
PIXART IMAGING INC
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

Although this noise elimination method can eliminate the noise caused by a fixed ambient light source, when the position of the ambient light source changes with time, simply calculating the difference image between bright and dark image frames cannot effectively eliminate the background noise. The processing unit cannot correctly track the movement of the object according to the difference image

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  • Object tracking device and method of operation thereof
  • Object tracking device and method of operation thereof
  • Object tracking device and method of operation thereof

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Embodiment Construction

[0033] In order to make the above and other objects, features, and advantages of the present invention more apparent, a detailed description will be given below with reference to the accompanying drawings. In the description of the present invention, the same members are denoted by the same symbols, and will be described in advance.

[0034] Such as Figure 1A and 1B , which shows a schematic diagram of the application of the object tracking device according to the embodiment of the present invention. Since the object tracking device 1 of the embodiment of the present invention can be used to eliminate moving background noise, it is preferably applied to a movable device or device; for example, the object tracking device 1 can be installed on a vehicle 9 (such as Figure 1A ) or set on a portable electronic device 8 (such as Figure 1B );in, Figure 1A and 1B The installation positions of the object tracking device 1 described in are only exemplary. Of course, the object tr...

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Abstract

An object tracking device includes a light source, an image sensor and a processing unit. The light source emits light with a light emitting frequency. The image sensor outputs an operation image when the light source is turned on and a background image when the light source is turned off. The processing unit is used to obtain background information of the background image, calculate a difference image between the operation image and the background image, obtain object information of the difference image, and compare the background information with the object information to remove background noise.

Description

technical field [0001] The invention relates to a man-machine interface device, in particular to an optical object tracking device capable of eliminating moving background noise and an operating method thereof. Background technique [0002] A known optical object tracking device generally includes a light source, an image sensor, and a processing unit; wherein, the light source is used to illuminate an approaching object; the image sensor is used to obtain a plurality of image frames including the object; These image frames track the motion of the object. [0003] However, in addition to the object image, the image frames acquired by the image sensor often include an image of an ambient light source. In the known technology, in order to eliminate the image of the ambient light source, the image sensor can acquire a bright image frame that is turned on relative to the light source and a dark image frame that is turned off relative to the light source, and the processing unit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18
Inventor 高铭璨杨恕先程瀚平
Owner PIXART IMAGING INC