Photograph control device and method for high brightness shot object

A subject and photographic control technology, applied in the direction of exposure control, color TV parts, TV system parts, etc., can solve the problems of increased brightness and inability to identify the main target, etc., to prevent the reduction of the opening degree, Improve the effect of the monitoring function

Inactive Publication Date: 2006-07-12
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Abstract
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Problems solved by technology

[0008] However, on ordinary surveillance cameras, for example, such as Figure 4 As shown, in the image of the subject captured by a surveillance camera, when there is a high-intensity light source in some areas, the overall brightness of the image will increase significantly, so the opening degree of the above-mentioned aperture should be sharply reduced; and In the same way, as the opening degree of the aperture 11 decreases sharply, the brightness of the digitally processed video image will all decrease, so there may be a problem that the main target (such as the license plate number) cannot be recognized.

Method used

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  • Photograph control device and method for high brightness shot object
  • Photograph control device and method for high brightness shot object
  • Photograph control device and method for high brightness shot object

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Embodiment Construction

[0024] The ideal embodiments of the shooting control device and method for a high-brightness subject in the present invention will be described in detail below with reference to the accompanying drawings.

[0025] First of all, the shooting control device and method of the high-brightness subject based on the present invention are suitable for internally including (such as Figure 5 Shown) lens 10, aperture 11, CCD12, CDS&AGC13, analog / digital converter 14, digital signal processing unit 15, microcomputer 16 and other components of the surveillance camera.

[0026] On the other hand, a light source detection logic (LightSource Search Logic) 150 is also added to the above-mentioned digital signal processing unit 15. When there is a high-intensity light source in a part of the captured subject image, it is used to detect the presence of a light source. Any region of ; on the above CCD12, such as Image 6 As shown, each pixel and its switch and CCD control lines are also added. ...

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Abstract

Said invention refers to photograph controller and method for high brilliance object. When part area in shot object existing high brilliant light source, said invention can detects and control any area of light source, in order to prevent the reducing of aperture open and can normally display the main object in other areas of video image. Said invention can greatly raises monitoring function.

Description

【Technical field】 [0001] The present invention relates to a photographing control device and method for a high-brightness subject, and more specifically, relates to, for example, in a subject video image captured by a surveillance camera, even if a high-brightness light source ( Light Source), a photographing control device and method capable of normally displaying a high-brightness subject of a main target existing in other regions of an image. 【Background technique】 [0002] Generally, surveillance cameras using charge coupled devices (Charge Coupled Device, hereinafter referred to as CCD), such as figure 1 As shown, it includes a lens 10, an aperture 11, a CCD 12, a CDS&AGC 13, an analog / digital converter 14, a digital signal processing unit 15, a microcomputer 16, and the like. [0003] On the other hand, the incident light through the above-mentioned lens 10 is adjusted accordingly with the opening and closing degree of the above-mentioned aperture 11, for example, whe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232G03B7/095
Inventor 金万盛崔成昊
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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