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Method for judging environmental brightness

A technology of environmental brightness and brightness, which is applied in photometry, method of comparing with reference electrical parameters, measuring device, etc. Realize the effect of remote monitoring of environmental brightness, simplified method, and simple method

Inactive Publication Date: 2005-05-11
VIMICRO CORP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Both methods have their flaws. The first one is human judgment, the accuracy is very low, and it can only judge the brightness of the scene. If you want to know the brightness in the distance, there is no way, and the function of remote monitoring cannot be realized.
The second method is highly professional and expensive, and is only suitable for professional fields, not for ordinary places

Method used

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  • Method for judging environmental brightness

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The invention provides a method for judging the brightness of the environment. Firstly, the video data of the environment is obtained by shooting with a camera, and then the video data is analyzed to calculate the average brightness value, thereby judging the brightness of the environment.

[0019] Accompanying drawing provided is a kind of preferred embodiment of the present invention.

[0020] Referring to the accompanying drawings, this embodiment specifically includes the following steps:

[0021] Step 1. Preset one or more brightness thresholds to form a brightness interval.

[0022] Step 2. Use the camera to aim at the scene where the brightness needs to be tested;

[0023] Step 3, open the video stream and receive the video data;

[0024] Step 4, obtain multiple frames of video data, and calculate their brightness com...

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Abstract

A method for determining environmental brightness includes obtaining environmental video data by utilzing camera, analyzing the data and calculating out average brightness value for determining environmental brightness; obtaining average brightness value by calculating average value of multiframe video data brightness component; and determining environmental brightness by comparing the average brightness with preset brightness threshold.

Description

technical field [0001] The invention relates to a method for simply judging the ambient brightness. technical background [0002] In order to know the brightness of the current environment, we often use two methods, one: visual inspection, that is, to judge the current brightness based on our personal experience; the other is to use a dedicated brightness measuring instrument with a brightness sensor to accurately measure Brightness value. Both methods have their drawbacks. The first one is human judgment, which has low accuracy and can only judge the brightness of the scene. If you want to know the brightness in the distance, you have no choice but to realize the remote monitoring function. The second method is highly professional and expensive, and is only suitable for professional fields, not for ordinary places. Contents of the invention [0003] The purpose of the present invention is to provide a simple method for judging the brightness of the environment in view o...

Claims

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Application Information

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IPC IPC(8): G01J1/00G01J1/14
Inventor 曹玉弟
Owner VIMICRO CORP