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Image system and interference elimination method thereof

An interference elimination and image technology, which is applied in image enhancement, image data processing, instruments, etc., can solve the problems that the operation accuracy of the image system cannot be effectively improved, it is difficult to effectively eliminate the influence of environmental light sources, and the accuracy of system operation is affected.

Inactive Publication Date: 2013-05-08
PIXART IMAGING INC
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Problems solved by technology

However, since the image sensor senses energy changes, when the brightness of the ambient light source changes over time, it will have a direct impact on the image captured by the image sensor, thereby affecting the operating accuracy of the system
[0004] In particular, when the brightness of the ambient light source does not show a simple brightness change or there are ambient light sources with different brightness changes in the environment, it is difficult to effectively eliminate the influence of the ambient light source, which leads to the inability to effectively improve the operation accuracy of the image system

Method used

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  • Image system and interference elimination method thereof
  • Image system and interference elimination method thereof
  • Image system and interference elimination method thereof

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[0038] 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 components are denoted by the same symbols, and will be described here first.

[0039] The invention relates to an image system for eliminating the influence of external environmental light sources and an interference eliminating method thereof. The ambient light source has different brightness change intervals in each brightness change cycle, and the different brightness change intervals may be regular or irregular changes caused by a single type of ambient light source or jointly caused by different types of ambient light sources.

[0040] Please refer to figure 1 and figure 2 as shown, figure 1 An image system 1 showing an embodiment of the present invention; figure 2 Displays the change in brightness of the ambi...

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Abstract

An image system comprises at least one image sensor, a light source and a processing unit. At least two images are obtained in sequence in each brightness variation zone of an environment light source. The light source is lighted once in each brightness variation zone, the light of the light source is lightened synchronous with one of the images obtained by the at least one image sensor. The difference between the image synchronous with the light of the light source and the image not synchronous with the light of the light source is calculated by the processing unit so that disturbance of the environment light source is eliminated. The invention further comprises an interference elimination method of the image system.

Description

technical field [0001] The invention relates to an image system and an interference elimination method thereof, in particular to an image system capable of eliminating the flicker phenomenon caused by ambient light sources and an interference elimination method thereof. Background technique [0002] At present, the image acquisition technology has been widely used in various electronic products, including optical touch systems, distance measurement systems, optical finger cursor systems, or other optical application products that can use the acquired images for corresponding manipulation. [0003] Generally speaking, the optical application product uses at least one image sensor to acquire images, and uses a processing unit to perform subsequent processing on the acquired images to calculate changes in image content. However, since the image sensor senses energy changes, when the brightness of the ambient light source changes over time, it will have a direct impact on the im...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 廖祈杰郑信基
Owner PIXART IMAGING INC
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