CN106454080A - Haze penetration control system and haze penetration method for camera - Google Patents
Haze penetration control system and haze penetration method for camera Download PDFInfo
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- CN106454080A CN106454080A CN201610869276.2A CN201610869276A CN106454080A CN 106454080 A CN106454080 A CN 106454080A CN 201610869276 A CN201610869276 A CN 201610869276A CN 106454080 A CN106454080 A CN 106454080A
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- haze
- histogram
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
Abstract
The invention discloses a haze penetration control system and a haze penetration method for a camera. The system comprises the camera, wherein the camera comprises a sensor and a video processing main chip; the sensor adopts a photoreceptor to convert a light signal into a video signal; the video processing main chip carries out wide dynamic processing, black level correction, noise reduction, lens shadow correction, 3A information statistics, automatic exposure, automatic white balance, gamma correction, color correction and color conversion of the video signal; and the video processing main chip receives the video signal transmitted from the sensor. The system and method provided by the invention has the advantages that the haze penetration effect is achieved, an algorithm is simple and easy to use, the universality is high, hardware requirements are low, a haze penetration lens and an extra DSP are not needed, the cost is reduced, and promotion and popularization are convenient.
Description
Technical field
The present invention relates to video analysis and image procossing, be specifically related to a kind of video camera Penetrating Fog control system and Penetrating Fog side
Method.
Background technology
Current Penetrating Fog mainly has two ways from principle：
First, optics Penetrating Fog.General visible ray cannot penetrate cloud and mist and flue dust, but near infrared ray can penetrate certain density mist
Mist flue dust, optics Penetrating Fog just utilizes the near infrared ray can be with the principle of diffraction molecule, it is achieved accurately quick focus on.The pass of technology
Key is mainly at camera lens and optical filter and photoreceptor.By way of physics, the principle of optical imagery is utilized to promote picture clear
Degree.Shortcoming is to can only obtain black and white monitored picture, and camera lens is with high costs, and actual number of applications is limited.
2nd, algorithm Penetrating Fog.Algorithm Penetrating Fog technology, the also referred to as anti-reflection technology of video image, refer generally to because of mist and aqueous vapor ash
Dirt etc. cause wooly image to be apparent from, and emphasize some feature interested in the middle of image, suppress uninterested spy
Levy so that the quality of image is improved, and information content is strengthened.Way general at present be front-end camera add FPGA and
DSP, increases detection and arithmetic element is processed, and virtually too increases some costs, additionally also has client at rear end
Reason, but simply preview, and to process multichannel also relatively difficult simultaneously.
Under haze weather, the major part image color that monitored of video monitoring system will dim, its contrast also can
Step-down, therefore can cause the details of some important goals to be submerged in fog and be difficult to find, this may result in video monitoring system
Normal function plays and is affected.And optics Penetrating Fog is difficult to universal due to price factor, front end camera need extra FPGA and
DSP, has also accordingly increased cost.
Content of the invention
The present invention is directed to the deficiencies in the prior art, and then provide a kind of effect that can reach Penetrating Fog haze, algorithm is simply easy
With, highly versatile, low to hardware requirement, it is not necessary to fog penetration lens, not need extra DSP, reduce cost, it is simple to popularize
Video camera Penetrating Fog control system and Penetrating Fog method.
The present invention is achieved through the following technical solutions：A kind of video camera Penetrating Fog control system, including video camera, institute
State video camera and include sensor and Video processing master chip；
Sensor uses photoreceptor, and optical signal is changed into vision signal；Vision signal is entered line width and is moved by Video processing master chip
State process, black-level correction, noise reduction, camera lens shadow correction, 3A Information Statistics, automatic exposure, AWB, gamma correction,
Colour correction, color conversion；Video processing master chip receives the vision signal being come by sensor transmissions.
A kind of video camera Penetrating Fog method, specifically includes following concrete steps：
Step one, after light carries out opto-electronic conversion by sensor, ISP provides 3A statistical value to image；
Step 2, more uniform at non-haze scene hypograph histogram distribution ratio, at haze scene hypograph histogram baseset
In heavier at zone line, haze, histogram get over concentrate；
Step 3, in the statistical information of 3A extract image histogram information, it is judged that histogram distribution change, it may be judged whether have mist
Haze and haze concentration；
If step 4 judges there is haze from histogram, then processing the Y value of image, the details of image at once
Display, it is achieved Penetrating Fog haze；
Step 5, haze are heavier, and histogram is got over and concentrated, and determines the process intensity to Y value according to haze concentration, realizes automatically with this
Penetrating Fog haze；
Step 6, in the statistical information of 3A extract image histogram information, it is judged that histogram distribution change, discovery histogram divide
Cloth ratio is more uniform, then judge do not have haze；
Step 7, do not have in the case of haze to be compressed to video processing, and be decoded display, finally complete a series of behaviour
Make.
After light carries out opto-electronic conversion by Sensor, ISP provides 3A statistical value to image, utilizes Y therein
Value histogram, the distribution according to Y value and change determine whether mist, process Y value in conjunction with judged result, reach Penetrating Fog
The purpose of haze.
The invention has the beneficial effects as follows：The present invention provides a kind of effect utilizing said method to reach Penetrating Fog haze, algorithm letter
Single easy-to-use, highly versatile, low to hardware requirement, it is not necessary to fog penetration lens, not need extra DSP, reduce cost, it is simple to promote
Universal.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the accompanying drawing of required use is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, all right
Obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the present invention.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
This specification（Including any accessory claim, summary and accompanying drawing）Disclosed in any feature, unless chatted especially
State, all can be by other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, each feature is only
It is one of a series of equivalence or similar characteristics example.
As it is shown in figure 1,（1）After light carries out opto-electronic conversion by sensor, ISP provides 3A statistics to image
Value；
（2）More uniform at non-haze scene hypograph histogram distribution ratio, substantially concentrate at haze scene hypograph histogram
Zone line, haze is heavier, and histogram is got over and concentrated；
（3）In the statistical information of 3A extract image histogram information, it is judged that histogram distribution change, it may be judged whether have haze with
And haze concentration；
（4）If judging there is haze from histogram, then processing the Y value of image, the details of image just manifests at once
Out, it is achieved Penetrating Fog haze；
（5）Haze is heavier, and histogram is got over and concentrated, and determines the process intensity to Y value according to haze concentration, realizes automatic Penetrating Fog with this
Haze；
（6）Extract image histogram information in the statistical information of 3A, it is judged that histogram distribution changes, find histogram distribution ratio
More uniform, then judge there is no haze；
（7）It is compressed processing to video in the case of not having haze, and is decoded display, finally complete a series of operation.
Video camera mainly comprises sensor and Video processing master chip, and sensor is mainly responsible for optical signal to be changed into video
Signal, video frequency processing chip vision signal is entered line width dynamically process, black-level correction, noise reduction, camera lens shadow correction, 3A information
The finally coding such as statistics, automatic exposure, AWB, gamma correction, colour correction, color conversion, by non-haze sky
The tracking contrast of the image brightness histogram of same scene under gas and haze weather；
More uniform at non-haze scene hypograph histogram distribution ratio（Because image has bright have dark）, at haze scene hypograph
Histogram concentrates on zone line substantially（Image has lost details）, haze is heavier, and histogram is got over and concentrated, under study for action simultaneously
Discovery carries out a process when there being haze to the Y value of image, and the details of image just displays at once, thus reaches Penetrating Fog haze
Purpose.
Extract image histogram information in the statistical information of 3A, it is judged that histogram distribution changes, it may be judged whether have haze
And haze concentration, determine the process intensity to Y value according to haze concentration, thus achieve automatic in real time Penetrating Fog haze.
After light carries out opto-electronic conversion by Sensor, ISP provides 3A statistical value to image, utilizes Y therein
Value histogram, the distribution according to Y value and change determine whether mist, process Y value in conjunction with judged result, reach Penetrating Fog
The purpose of haze.
The Y value processing variation matrix that table 1 provides for the embodiment of the present invention；
The invention has the beneficial effects as follows：The present invention provides a kind of effect utilizing said method to reach Penetrating Fog haze, and algorithm is simply easy
With, highly versatile, low to hardware requirement, it is not necessary to fog penetration lens, not need extra DSP, reduce cost, it is simple to promote general
And.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
The change expected without creative work or replacement, all should cover within protection scope of the present invention.Therefore, the present invention
Protection domain should be as the criterion with the protection domain that claims are limited.
Claims (2)
1. a video camera Penetrating Fog control system, including video camera, it is characterised in that：Described video camera includes sensor and video
Processing main chip；
Sensor uses photoreceptor, and optical signal is changed into vision signal；Vision signal is entered line width and is moved by Video processing master chip
State process, black-level correction, noise reduction, camera lens shadow correction, 3A Information Statistics, automatic exposure, AWB, gamma correction,
Colour correction, color conversion；Video processing master chip receives the vision signal being come by sensor transmissions.
2. a video camera Penetrating Fog method, it is characterised in that specifically include following concrete steps：
Step one, after light carries out opto-electronic conversion by sensor, ISP provides 3A statistical value to image；
Step 2, more uniform at non-haze scene hypograph histogram distribution ratio, at haze scene hypograph histogram baseset
In heavier at zone line, haze, histogram get over concentrate；
Step 3, in the statistical information of 3A extract image histogram information, it is judged that histogram distribution change, it may be judged whether have mist
Haze and haze concentration；
If step 4 judges there is haze from histogram, then processing the Y value of image, the details of image at once
Display, it is achieved Penetrating Fog haze；
Step 5, haze are heavier, and histogram is got over and concentrated, and determines the process intensity to Y value according to haze concentration, realizes automatically with this
Penetrating Fog haze；
Step 6, in the statistical information of 3A extract image histogram information, it is judged that histogram distribution change, discovery histogram divide
Cloth ratio is more uniform, then judge do not have haze；
Step 7, do not have in the case of haze to be compressed to video processing, and be decoded display, finally complete a series of behaviour
Make.
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| CN201610869276.2A CN106454080A (en) | 2016-09-30 | 2016-09-30 | Haze penetration control system and haze penetration method for camera |
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| CN201610869276.2A CN106454080A (en) | 2016-09-30 | 2016-09-30 | Haze penetration control system and haze penetration method for camera |
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| CN107613192A (en) * | 2017-08-09 | 2018-01-19 | 深圳市巨龙创视科技有限公司 | A kind of Digital Image Processing algorithm based on video camera module |
| CN107623827A (en) * | 2017-08-15 | 2018-01-23 | 上海集成电路研发中心有限公司 | A kind of intelligent CMOS image sensor chip and its manufacture method |
| CN110493579A (en) * | 2019-03-14 | 2019-11-22 | 杭州海康威视数字技术股份有限公司 | A kind of colour Penetrating Fog method, apparatus, video camera and image processing system |
| CN112218049A (en) * | 2020-09-29 | 2021-01-12 | 北京环境特性研究所 | Video monitoring device |
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Application publication date: 20170222 |