CN107452026A - A kind of processing system and its method for image spot barycenter - Google Patents
A kind of processing system and its method for image spot barycenter Download PDFInfo
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- CN107452026A CN107452026A CN201710686549.4A CN201710686549A CN107452026A CN 107452026 A CN107452026 A CN 107452026A CN 201710686549 A CN201710686549 A CN 201710686549A CN 107452026 A CN107452026 A CN 107452026A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
- G06T7/277—Analysis of motion involving stochastic approaches, e.g. using Kalman filters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/66—Analysis of geometric attributes of image moments or centre of gravity
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20004—Adaptive image processing
Abstract
The invention discloses a kind of processing system and its method for image spot barycenter, camera interface respectively with control chip, image line column count module, image filtering module, image adaptive threshold module communicates to connect, image line column count module, image adaptive threshold module communicates to connect with image filtering module, image filtering module communicates to connect with an image spot centroid calculation module, image spot centroid calculation module communicates to connect with Kaman that wave filter, Kaman your wave filter respectively with low frequency miss distance module, camera dynamic windowing mouth mold block communicates to connect, camera dynamic windowing mouth mold block communicates to connect with high frequency miss distance module.Realize efficiently separating for low frequency miss distance and high frequency miss distance in light spot image, it is the basis that high-precision facula mass center calculates, the separation of low frequency miss distance and high frequency miss distance is completed using a CCD chip, the volume and power consumption of space optical communication system can be effectively reduced, so as to promote laser space communication system fast-developing.
Description
Technical field
The present invention relates to the processing of technical field of image processing, more particularly to a kind of space laser light spot image mass center in logical
System and processing method.
Background technology
Laser communication system the high coherence and spatial orientation of laser, determines sky using laser as information carrier
Between laser communication with RF communicate compared with it is with the obvious advantage in many aspects：Strong antijamming capability, security are good, equipment volume is small, again
Amount is light, frequency spectrum is not by control, low in energy consumption, system mobility strong, low cost, clear transport protocol etc..But work as and use CCD camera
When carrying out the reception of beacon hot spot, due to being influenceed by Platform Vibration, include high-frequency information and low frequency in the hot spot received
Two parts of information.Current processing method is to receive beacon beam respectively using two CCD cameras, and a CCD camera processing is high
Frequency information, CCD handle low-frequency information, are to need to use two beacon beams and two CCD cameras to enter the shortcomings that this method method
Row difference light spot received, adds volume, power consumption of whole optical communication system etc..Beacon hot spot is completed using a CCD camera,
By being stripped out the high fdrequency component of hot spot with low frequency component after algorithm process, current this method is not yet reported that.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of processing for image spot barycenter
System and method, to reduce the volume of space optical communication system and power consumption.
In order to solve the above technical problems, the present invention program includes：
A kind of processing system for image spot barycenter, it includes camera interface, camera interface and a control chip communication link
Connect, wherein, camera interface also communicates with image line column count module, image filtering module, image adaptive threshold module respectively
Connection, image line column count module, image adaptive threshold module communicate to connect with image filtering module, image filtering module
Communicated to connect with an image spot centroid calculation module, image spot centroid calculation module and Kaman that wave filter communication link
Connect, you communicate to connect wave filter Kaman with low frequency miss distance module, camera dynamic windowing mouth mold block respectively, camera dynamic windowing mouth
Module communicates to connect with high frequency miss distance module.
Described processing system, wherein, above-mentioned control chip is CCD chip.
A kind of method that image spot barycenter processing is carried out using above-mentioned processing system, it comprises the following steps：
A, CCD chip receives representation of laser facula, and laser facula transmits after camera interface to image line column count module again,
Image line column count module completes all pixels gray value size to the laser facula and calculates and record；Synchronous laser facula warp
Transmitted after crossing camera interface into image filtering module, image filtering module completes light spot image filtering to the laser facula；Swash
Light hot spot is transmitted after camera interface into image adaptive threshold module, and image adaptive threshold module is to the laser facula
Complete the mean value computation of all pixels gray scale, and the threshold value using result of calculation as next two field picture；
B, after CCD chip receives a complete two field picture, image spot centroid calculation module obtains the facula position coordinate；
C, from image spot centroid calculation module transfer to Kalman filter, Kalman filter obtains the facula position coordinate
The movement tendency of the facula position coordinate；The output result of Kalman filter is transmitted into tremendously low frequency miss distance module, through too low
Frequency miss distance module obtains the low frequency component of the hot spot after carrying out data processing；
D, the output result CCD chip according to Kalman filter carries out windowing operation by camera dynamic windowing mouth mold block,
Camera dynamic windowing mouth data are obtained, the output result of camera dynamic windowing mouth data is transmitted in tremendously high frequency miss distance module,
The high fdrequency component of hot spot is obtained after the processing of high frequency miss distance module data.
A kind of processing system and its method for image spot barycenter provided by the invention, is realized low in light spot image
Frequency miss distance efficiently separates with high frequency miss distance, is the basis that high-precision facula mass center calculates, is completed using a CCD chip
The separation of low frequency miss distance and high frequency miss distance, the volume and power consumption of space optical communication system can be effectively reduced, so as to promote
Laser space communication system is fast-developing.
Brief description of the drawings
Fig. 1 is the schematic diagram of processing system in the present invention.
Embodiment
The invention provides a kind of processing system and its method for image spot barycenter, for make the purpose of the present invention,
Technical scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.It is it should be appreciated that described herein
Specific embodiment only to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of processing system for image spot barycenter, as shown in Figure 1, it includes camera interface
2, camera interface 2 communicates to connect with a control chip 1, wherein, camera interface 2 also respectively with image line column count module 3, image
Filtration module 4, image adaptive threshold module 5 communicate to connect, and image line column count module 3, image adaptive threshold module 5 are equal
Communicated to connect with image filtering module 4, image filtering module 4 communicates to connect with an image spot centroid calculation module 6, image light
You communicate to connect wave filter 7 by spot centroid calculation module 6 and a Kaman, Kaman your wave filter 7 respectively with low frequency miss distance module 9,
Camera dynamic windowing mouth mold block 8 communicates to connect, and camera dynamic windowing mouth mold block 8 communicates to connect with high frequency miss distance module 10.When
So more preferably control chip 1 typically uses the technology type of CCD chip.
Meanwhile present invention also offers it is a kind of using above-mentioned processing system carry out image spot barycenter processing method, its
Comprise the following steps：
Step 1：CCD chip receives representation of laser facula, and laser facula transmits after camera interface 2 to image ranks meter again
Module 3 is calculated, image line column count module 3 completes all pixels gray value size to the laser facula and calculates and record；Synchronous
Laser facula is transmitted after camera interface 2 into image filtering module 4, and image filtering module 4 completes light to the laser facula
Spot image filtering；Laser facula is transmitted after camera interface 2 into image adaptive threshold module 5, image adaptive threshold value
Module 5 completes the mean value computation of all pixels gray scale, and the threshold value using result of calculation as next two field picture to the laser facula；
Step 2：After CCD chip receives a complete two field picture, image spot centroid calculation module 6 obtains the hot spot position
Put coordinate；
Step 3：The facula position coordinate is transmitted to Kalman filter 7, Kalman's filter from image spot centroid calculation module 6
Ripple device 7 obtains the movement tendency of the facula position coordinate；The output result of Kalman filter 7 is transmitted into tremendously low frequency miss distance mould
Block 9, the low frequency component of the hot spot is obtained after low frequency miss distance module 9 carries out data processing；
Step 4：Output result CCD chip according to Kalman filter 7 is opened a window by camera dynamic windowing mouth mold block 8
Mouth operation, obtains camera dynamic windowing mouth data, and the output result of camera dynamic windowing mouth data is transmitted into tremendously high frequency miss distance
In module 10, the high fdrequency component of hot spot is obtained after the data processing of high frequency miss distance module 10.It is achieved thereby that using one
CCD chip completes the purpose that low frequency miss distance separates with high frequency miss distance, and then effectively reduces the body of space optical communication system
Product and power consumption.
Certainly, described above is only presently preferred embodiments of the present invention, and the present invention is not limited to enumerate above-described embodiment, should
When explanation, any those skilled in the art are all equivalent substitutes for being made, bright under the teaching of this specification
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (3)
1. a kind of processing system for image spot barycenter, it includes camera interface, and camera interface communicates with a control chip
Connection, it is characterised in that camera interface also respectively with image line column count module, image filtering module, image adaptive threshold value
Module communicates to connect, and image line column count module, image adaptive threshold module communicate to connect with image filtering module, image
Filtration module and an image spot centroid calculation module communicate to connect, image spot centroid calculation module and Kaman that wave filter
Communication connection, you communicate to connect wave filter Kaman with low frequency miss distance module, camera dynamic windowing mouth mold block respectively, camera dynamic
Windowing module communicates to connect with high frequency miss distance module.
2. processing system according to claim 1, it is characterised in that above-mentioned control chip is CCD chip.
3. a kind of method that image spot barycenter processing is carried out using processing system as claimed in claim 1, it includes following step
Suddenly：
A, CCD chip receives representation of laser facula, and laser facula transmits after camera interface to image line column count module again,
Image line column count module completes all pixels gray value size to the laser facula and calculates and record；Synchronous laser facula warp
Transmitted after crossing camera interface into image filtering module, image filtering module completes light spot image filtering to the laser facula；Swash
Light hot spot is transmitted after camera interface into image adaptive threshold module, and image adaptive threshold module is to the laser facula
Complete the mean value computation of all pixels gray scale, and the threshold value using result of calculation as next two field picture；
B, after CCD chip receives a complete two field picture, image spot centroid calculation module obtains the facula position coordinate；
C, from image spot centroid calculation module transfer to Kalman filter, Kalman filter obtains the facula position coordinate
The movement tendency of the facula position coordinate；The output result of Kalman filter is transmitted into tremendously low frequency miss distance module, through too low
Frequency miss distance module obtains the low frequency component of the hot spot after carrying out data processing；
D, the output result CCD chip according to Kalman filter carries out windowing operation by camera dynamic windowing mouth mold block,
Camera dynamic windowing mouth data are obtained, the output result of camera dynamic windowing mouth data is transmitted in tremendously high frequency miss distance module,
The high fdrequency component of hot spot is obtained after the processing of high frequency miss distance module data.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108989718A (en) * | 2018-07-13 | 2018-12-11 | 中国船舶重工集团公司第七〇九研究所 | Beacon beam acquisition and tracking device and beacon beam method for capturing and tracing |
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| CN103630299A (en) * | 2013-11-29 | 2014-03-12 | 北京航空航天大学 | Positioning method and device for real time centroid of large-pixel light spot image |
| CN104792500A (en) * | 2015-04-20 | 2015-07-22 | 中国科学院上海光学精密机械研究所 | Diagnostic method for light beam pointing stability of optical system |
| CN105159460A (en) * | 2015-09-10 | 2015-12-16 | 哈尔滨理工大学 | Intelligent home controller based on eye-movement tracking and intelligent home control method based on eye-movement tracking |
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| CN101109817A (en) * | 2007-07-04 | 2008-01-23 | 长春理工大学 | Detecting device for real-time computing facula mass center of field-programmable logic array |
| CN101184173A (en) * | 2007-11-13 | 2008-05-21 | 长春理工大学 | Intelligent CCD camera with function of real-time calculating miss distance of luminous spot |
| CN102193819A (en) * | 2010-08-03 | 2011-09-21 | 北京航空航天大学 | Single-point noise resistant method and device for positioning light spot center |
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Application publication date: 20171208 |