CN106228525A - A kind of method suppressing infrared image excessively to strengthen - Google Patents
A kind of method suppressing infrared image excessively to strengthen Download PDFInfo
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- CN106228525A CN106228525A CN201610724217.6A CN201610724217A CN106228525A CN 106228525 A CN106228525 A CN 106228525A CN 201610724217 A CN201610724217 A CN 201610724217A CN 106228525 A CN106228525 A CN 106228525A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002708 enhancing effect Effects 0.000 claims abstract description 28
- 239000006185 dispersion Substances 0.000 claims abstract description 17
- 238000013178 mathematical model Methods 0.000 claims abstract description 8
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005728 strengthening Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/40—Image enhancement or restoration using histogram techniques
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Abstract
The invention discloses a kind of method suppressing infrared image excessively to strengthen, it includes: S1: original image carries out input statistics, average mean in statistics original image and variance var, analyzes its distribution situation, to ensure the real-time that image calculates；S2: set up average mean and var mathematical model, then calculate the dispersion degree of image according to this model；S3: calculate the real time enhancing coefficient of image according to the dispersion degree of image；S4: utilize the enhancing coefficient of image, infrared image is carried out real time enhancing.Under different scenes, the enhancing coefficient obtained is different, so can effectively utilize the dispersion degree of image to control the enhancing degree of image, it is ensured that the display effect of image, the enhancing coefficient of image can be regulated in real time, effectively limit original image and be excessively stretched in the image enhaucament stage；In the case of driftlessness or weak signal target, can effectively be suppressed situation about excessively strengthening by the method, make image show more natural.
Description
Technical field
The present invention relates to the image processing techniques in computer realm, a kind of suppress infrared image excessively to strengthen
Method.
Background technology
Existing scheme is primarily directed to Visual image processing, and for the excessive enhancement techniques of suppression of infrared image processing
Almost without, and traditional Visual image processing mode is not suitable for infrared image processing, therefore increases for infrared image
The excessive enhancing situation occurred in the reason of strength needs special handling, and why needs the method suppressing excessively to strengthen, and is because
Infrared image is in the case of circumstance of temperature difference is the least, and the distribution of produced image is the narrowest, and this can affect us and see
Examine.Accordingly, it would be desirable to image is carried out enhancement process, as in figure 2 it is shown, owing to source images indication range is the least, and image enhaucament gesture
The excessive enhancing of image must be caused, and excessively strengthening caused direct result is exactly that picture noise is substantially excessively amplified,
Not fogging clear, affect display effect.
Owing to the technical merit of the Infrared Detectors of our country to fall behind a lot relative to visible image capturing head, cause red
The contrast that the image that the image of external detector output does not has visible ray to export is had is high, the feature that noise is little, simultaneously because
Far have dynamic range output gather scene impact the biggest.Infrared image is caused to there will be under different scenes completely
Different output data, during carrying out infrared image real time enhancing, it is likely that there will be due to a upper scene is red
Outer image scene is abundanter, and dynamic range is relatively wide, and the infrared image of a upper scene can use the strongest rectangular histogram to increase
Strong coefficient goes to regulate the output of image, but once shows that scene is undergone mutation, or has abundant scene change for only to have
Time in the scene of a small amount of effective information, it may appear that the relevant parameter of a upper scene is not appropriate for current scene, causes image
Excessively strengthened, it is therefore desirable to a kind of can suppress image enhancing intensity in the case of scene is not the abundantest in real time.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of side suppressing infrared image excessively to strengthen
Method, the method can regulate the enhancing coefficient of image in real time, effectively limits original image and is excessively stretched in the image enhaucament stage；
In the case of driftlessness or weak signal target, can effectively be suppressed situation about excessively strengthening by the method, make image show
More natural.
It is an object of the invention to be achieved through the following technical solutions: a kind of side suppressing infrared image excessively to strengthen
Method, it is characterised in that it comprises the steps:
S1: original image is carried out input statistics, average mean in statistics original image and variance var, analyzes it
Distribution situation, to ensure the real-time that image calculates；
S2: set up average mean and var mathematical model, then calculate the dispersion degree of image according to this model；
S3: calculate the real time enhancing coefficient of image according to the dispersion degree of image；
S4: utilize the enhancing coefficient of image, infrared image is carried out real time enhancing.
Described average mean mathematical model computing formula is:Described var mathematical modulo
Type computing formula is:Wherein xijFor image pixel value, m is picture traverse, and n is that image is long
Degree, u is the image average obtained.
Described image dispersion calculation is:Wherein xdownBe in image by
The pixel value of the little point accounting for all proportions 1.5% to big pixel accumulated value, xupIt is descending cumulative in image and is equal to
The pixel value of the point of 1.5%.
The computing formula of described image real time enhancing coefficient is:Wherein, σ is figure image scale
Accurate poor, Δ is dispersion degree.
The invention has the beneficial effects as follows: the invention provides a kind of method suppressing infrared image excessively to strengthen, in difference
Scene under, the enhancing coefficient obtained is different, so can effectively utilize the dispersion degree of image to control image
Enhancing degree, it is ensured that the display effect of image, it is possible to regulate the enhancing coefficient of image in real time, effectively limits original image at image
The enhancing stage is excessively stretched；In the case of driftlessness or weak signal target, can effectively suppress excessively to increase by the method
Strong situation, makes image show more natural.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention；
Fig. 2 is the distribution of conventional histogram enhanced grey level histogram；
Fig. 3 is the graphic histogram distribution using the method for the present invention to reach.
Detailed description of the invention
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
The following stated.
As it is shown in figure 1, a kind of method suppressing infrared image excessively to strengthen, it is characterised in that it comprises the steps:
S1: original image is carried out input statistics, average mean in statistics original image and variance var, analyzes it
Distribution situation, to ensure the real-time that image calculates；
S2: set up average mean and var mathematical model, then calculate the dispersion degree of image according to this model；
S3: calculate the real time enhancing coefficient of image according to the dispersion degree of image；
S4: utilize the enhancing coefficient of image, infrared image is carried out real time enhancing.
Described average mean mathematical model computing formula is:Described var mathematical modulo
Type computing formula is:Wherein xijFor image pixel value, m is picture traverse, and n is that image is long
Degree, u is the image average obtained.
Described image dispersion calculation is:Wherein xdownBe in image by
The pixel value of the little point accounting for all proportions 1.5% to big pixel accumulated value, xupIt is descending cumulative in image and is equal to
The pixel value of the point of 1.5%.Dispersion degree function shows the distribution situation of image in image histogram, and using in the present invention should
Parameter controls image and excessively strengthens.
The computing formula of described image real time enhancing coefficient is:Wherein, σ is figure image scale
Accurate poor, Δ is dispersion degree.
As it is shown on figure 3, use the method for the present invention to carry out image enhaucament, it is possible to regulate the enhancing coefficient of image in real time, have
Effect limits original image and is excessively stretched in the image enhaucament stage.
Claims (4)
1. the method suppressing infrared image excessively to strengthen, it is characterised in that it comprises the steps:
S1: original image is carried out input statistics, average mean in statistics original image and variance var, analyzes its distribution
Situation, to ensure the real-time that image calculates；
S2: set up average mean and var mathematical model, then calculate the dispersion degree of image according to this model；
S3: calculate the real time enhancing coefficient of image according to the dispersion degree of image；
S4: utilize the enhancing coefficient of image, infrared image is carried out real time enhancing.
A kind of method suppressing infrared image excessively to strengthen the most according to claim 1, it is characterised in that: described average
Mean mathematical model computing formula is:Described var mathematical model computing formula is:Wherein xijFor image pixel value, m is picture traverse, and n is image length, and u is the figure obtained
As average.
A kind of method suppressing infrared image excessively to strengthen the most according to claim 2, it is characterised in that: described image
Dispersion calculation is:Wherein xdownIt is that pixel ascending in image tires out
The pixel value of the value added point accounting for all proportions 1.5%, xupIt it is descending cumulative in image and the pixel of point equal to 1.5%
Value.
A kind of method suppressing infrared image excessively to strengthen the most according to claim 2, it is characterised in that: described image
The computing formula of real time enhancing coefficient is:Wherein, σ is that graphics standard is poor, and Δ is dispersion degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610724217.6A CN106228525B (en) | 2016-08-25 | 2016-08-25 | Method for inhibiting excessive enhancement of infrared image |
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| CN201610724217.6A CN106228525B (en) | 2016-08-25 | 2016-08-25 | Method for inhibiting excessive enhancement of infrared image |
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| CN106228525A true CN106228525A (en) | 2016-12-14 |
| CN106228525B CN106228525B (en) | 2020-08-21 |
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| CN102521813A (en) * | 2011-11-21 | 2012-06-27 | 华中科技大学 | Infrared image adaptive enhancement method based on dual-platform histogram |
| CN103208105A (en) * | 2013-05-02 | 2013-07-17 | 中国电子科技集团公司第二十八研究所 | Infrared image detail enhancement and noise adaptive inhibition method |
| US20140340515A1 (en) * | 2013-05-14 | 2014-11-20 | Panasonic Corporation | Image processing method and system |
| US20160042500A1 (en) * | 2014-08-05 | 2016-02-11 | Seek Thermal, Inc. | Local contrast adjustment for digital images |
-
2016
- 2016-08-25 CN CN201610724217.6A patent/CN106228525B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| CN101452575A (en) * | 2008-12-12 | 2009-06-10 | 北京航空航天大学 | Image self-adapting enhancement method based on neural net |
| CN102521813A (en) * | 2011-11-21 | 2012-06-27 | 华中科技大学 | Infrared image adaptive enhancement method based on dual-platform histogram |
| CN103208105A (en) * | 2013-05-02 | 2013-07-17 | 中国电子科技集团公司第二十八研究所 | Infrared image detail enhancement and noise adaptive inhibition method |
| US20140340515A1 (en) * | 2013-05-14 | 2014-11-20 | Panasonic Corporation | Image processing method and system |
| US20160042500A1 (en) * | 2014-08-05 | 2016-02-11 | Seek Thermal, Inc. | Local contrast adjustment for digital images |
Non-Patent Citations (4)
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| WU, CHENG-HO 等: "Superpixel-based image noise variance estimation with local statistical assessment", 《EURASIP JOURNAL ON IMAGE AND VIDEO PROCESSING》 * |
| 塔西甫拉提·特依拜: "《绿洲遥感》", 30 September 2008 * |
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