CN107094241A - The real time imagery display methods and system of a kind of carried SAR - Google Patents
The real time imagery display methods and system of a kind of carried SAR Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04845—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/04—Context-preserving transformations, e.g. by using an importance map
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4007—Scaling of whole images or parts thereof, e.g. expanding or contracting based on interpolation, e.g. bilinear interpolation
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Abstract
The present invention relates to the real time imagery display methods and system of a kind of carried SAR, this method comprises the following steps:Receive the view data bag of radar generation；View data bag is parsed, SAR image data is obtained, SAR image is handled, ultimate resolution SAR image is obtained；By current ultimate resolution SAR image and it is preceding once obtain drawing that ultimate resolution SAR image carries out scaled down, regenerate composograph；The scaling adaptive to composograph progress and the operation of display.A kind of system is further related to, the system includes：View data receiving module, image adaptive module, picture roll display module, image scale operation module.The present invention on the premise of the available and real-time display of internal memory is ensured, is remained the highest resolution of SAR image, realizes and the scrolling display and scaling of high definition SAR image are checked using image adaptive generation and the method adaptively shown.
Description
Technical field
The invention belongs to the technical field of the real time imagery of carried SAR, more particularly to a kind of real time imagery of carried SAR are aobvious
Show method and system.
Background technology
Synthetic aperture radar abbreviation SAR, is often installed on the flying platforms such as aircraft, satellite, realize to the round-the-clock on ground,
Round-the-clock imaging observation.Traditional carried SAR display control software is shown treated in real time in the course of the work
Thumbnail data, the high definition SAR image data of generation are then being entered using special pattern process computer to view data afterwards
Row is handled and checked.Although the method for display thumbnail alleviates the data receiver and display processing of display control software in real time
Pressure, it is ensured that the real-time that image is shown, but the resolution ratio of real time imagery is reduced, make operating personnel can not be to imaging
Content makes accurate judgement.Meanwhile, traditional real time imagery display methods secures the wide and height of SAR image, it is impossible to dynamic
The change of viewing area size is adapted to, while also not supporting image adaptive scaling to check.
The content of the invention
The technical problems to be solved by the invention are：Existing traditional real time imagery display methods reduces real time imagery
Resolution ratio, and also secure the wide and height of SAR image, it is impossible to the dynamic change for adapting to viewing area size, also do not support
Image adaptive scaling is checked.
To solve technical problem above, the invention provides a kind of real time imagery display methods of carried SAR, this method
Comprise the following steps：
S1, receives the view data bag of radar generation and preserves described image packet；
S2, described image packet is parsed, and obtains SAR image data, while the SAR image data are generated
Original SAR image, processing is compressed to the original SAR image, obtains the storable ultimate resolution SAR figures of current memory
Picture；
S3, while the ultimate resolution SAR image to the ultimate resolution SAR image and history carries out equal proportion contracting
It is small, the ultimate resolution SAR image of the ultimate resolution SAR image and the history after reducing is respectively obtained, and setting
The ultimate resolution SAR image after fetching portion reduces and part are distinguished according to current scrolling progress in fixed timing
The ultimate resolution SAR image generation composograph of the history after diminution；
S4, during when the composograph for the ultimate resolution SAR image after reducing, is carried out to the composograph
Scaling and display operation.
Beneficial effects of the present invention：By above-mentioned method solve real time imagery display resolution in conventional method it is low,
Image show size can not adaptively, image be the problem of can not scale.The real time imagery for realizing carried SAR is shown, of the invention
Middle use image adaptive generation and the method adaptively shown, on the premise of ensureing that internal memory can use with display in real time, retain
The highest resolution of SAR image, realizes the scrolling display and scaling of high definition SAR image is checked.
Further, the S1 includes：
S11, the view data bag of radar generation is received using communication socket mode；
S12, described image packet is preserved using chained list；
S13, regularly inquires about and described image packet whether is preserved in the chained list, if preserving, performs S2, deletes simultaneously
Described image packet, if not preserving, re-executes S11.
Above-mentioned further beneficial effect：We receive view data bag using communication socket mode and use chained list
Described image packet is preserved, loss of the view data bag in transmission process can be so avoided, while being inquired about using timing
Whether described image packet is preserved in the chained list, if when preserving, the described image packet of preservation is sent, together
When delete the described image packet that has sent, be so to reduce internal memory, save the space of data storage, lower internal memory
Occupancy, improves the processing speed of data.
Further, in the S2, in addition to：Described image packet is parsed, obtain SAR image data and
SAR image parameter information；The longitude and latitude of original SAR image any pixel position is calculated according to the SAR image parameter information.
Above-mentioned further beneficial effect：Obtain these parameter informations be advantageous for it is follow-up we image pixel is divided
Analysis, it is possible to increase the accuracy of graphical analysis, calculates the longitude and latitude of any pixel position of original SAR image, can be in mouse
Punctuate hits the latitude and longitude information for effectively showing specified point of arbitrary image, is conducive to the follow-up analysis to picture material and note
Record.
Further, also include in the S2：After the storable ultimate resolution SAR image of current memory is obtained, lead to
Mouse selection is crossed, the latitude and longitude information for specifying image pixel is shown on a display screen.
Further, the S2 includes：The single image maximum memory set according to user takes threshold value, calculates described
Original SAR image needs the multiple compressed and is compressed processing to the original SAR image according to compression multiple, obtains current
The storable ultimate resolution SAR image of internal memory.
Above-mentioned further beneficial effect：The single image maximum memory given in user takes threshold value, can so protect
The card present invention's is adaptively carried out in effective maximum memory, is sufficiently used internal memory, it is ensured that can obtain maximum
Ultimate resolution SAR image, will not occur because of the phenomenon that low memory, image can not be shown again.
System is shown the invention further relates to a kind of real time imagery of carried SAR, the system includes：View data receives mould
Block, image adaptive module, picture roll display module, image scale operation module；
The data reception module, it is used to receive the view data bag of radar generation and preserves view data bag；
Described image adaptation module, it is used to be parsed described image packet, obtains SAR image data, together
When the SAR image data are generated into original SAR image, processing is compressed to the original SAR image, current memory is obtained
Storable ultimate resolution SAR image；
Described image scrolls module, and it is used for the ultimate resolution to the ultimate resolution SAR image and history
SAR image carries out scaled down, the history after respectively obtaining the ultimate resolution SAR image after reducing and reducing
Ultimate resolution SAR image, while in the timing of setting according to current scrolling progress distinguish fetching portion reduce after
The ultimate resolution SAR image and part reduce after the history ultimate resolution SAR image generation composograph；
Described image zoom operations module, it is used for the ultimate resolution SAR after composograph is reduces
During image 1, the composograph is zoomed in and out and shown operation.
Beneficial effects of the present invention：By above-mentioned system solve real time imagery display resolution in conventional method it is low,
Image show size can not adaptively, image be the problem of can not scale.The real time imagery for realizing carried SAR is shown, of the invention
Middle use image adaptive generation and the method adaptively shown, on the premise of ensureing that internal memory can use with display in real time, retain
The highest resolution of SAR image, realizes the scrolling display and scaling of high definition SAR image is checked.
Further, the data reception module includes：Data receipt unit, data query unit；
The data receipt unit, it is used to receive the view data bag of radar generation and protects described image packet
Deposit；
The data query unit, it is used to regularly inquire about described image data whether to be preserved in the data receipt unit
Bag, if preserving, image adaptive module is sent to by the described image packet of preservation, while deleting the figure sent
As packet, if not preserving, the data receipt unit receives the view data bag of radar generation and by the figure again
As packet is preserved.
Above-mentioned further beneficial effect：We receive view data bag using communication socket mode and use chained list
Described image packet is preserved, loss of the view data bag in transmission process can be so avoided, while being inquired about using timing
Whether described image packet is preserved in the chained list, if when preserving, the described image packet of preservation is sent, together
When delete the described image packet that has sent, be so to reduce internal memory, save the space of data storage, lower internal memory
Occupancy, improves the processing speed of data.
Further, described image adaptation module includes：Image analysis adaptive unit, image generation are adaptive single
Member, compression of images adaptive unit；
Described image parses adaptive unit, and its view data bag for being used to receive is parsed, and obtains SAR image
Data and SAR image data preservation；
Described image generates adaptive unit, and it is used to read the SAR image data and according to the SAR image data
Generate original SAR image；
Described image compresses adaptive unit, and it is used to be compressed processing to the original SAR image, obtains in current
Deposit displayable ultimate resolution SAR image.
Further, described image scrolling display module includes：Image down display unit, picture roll display unit；
Described image reduces display unit, and it is used for the ultimate resolution to the ultimate resolution SAR image and history
SAR image carries out scaled down, respectively obtains the maximum point of the ultimate resolution SAR image after reducing and the history
Resolution SAR image；
Described image scrolls unit, and it is used in the timing of setting be obtained respectively according to current scrolling progress
The ultimate resolution SAR image life of the history after the ultimate resolution SAR image and part diminution after the diminution of part
Into composograph.
Further, the system also includes：Time block, its be used for described image reduce display unit will to it is described most
The ultimate resolution SAR image of big resolution stop and reserves (SAR) image and history carries out scaled down, described maximum point after being reduced
After the ultimate resolution SAR image of resolution SAR image and the history, time block setting timing so that described image
Scroll unit and the maximum after fetching portion reduces is distinguished according to current scrolling progress in the setting timing
The ultimate resolution SAR image generation composograph of the history after resolution stop and reserves (SAR) image and part diminution.
Above-mentioned further beneficial effect：By setting timing, by image manipulation, image energy in each operation
Enough scrolling display for adaptively completing image in setting time well.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the real time imagery display methods of carried SAR of the present invention；
Fig. 2 is composograph (a) (b) (c) process schematic in embodiments of the invention 1；
Fig. 3 is the real time imagery display system schematics for planting carried SAR of the invention
Accompanying drawing：1st, the ultimate resolution SAR image after reducing；2nd, composograph；3rd, the history after reducing
Ultimate resolution SAR image.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1
As shown in figure 1, a kind of real time imagery display methods of carried SAR of the present embodiment 1, this method includes following step
Suddenly：
S1, receives the view data bag of radar generation and preserves described image packet；
S2, described image packet is parsed, and obtains SAR image data, while the SAR image data are generated
Original SAR image, processing is compressed to the original SAR image, obtains the storable ultimate resolution SAR figures of current memory
Picture；
S3, while the ultimate resolution SAR image to the ultimate resolution SAR image and history carries out equal proportion contracting
It is small, the ultimate resolution SAR image of the ultimate resolution SAR image 1 and the history after reducing is respectively obtained, and setting
The ultimate resolution SAR image 1 after fetching portion reduces and portion are distinguished according to current scrolling progress in fixed timing
The generation composograph 2 of ultimate resolution SAR image 3 for the history divided after reducing；
S4, during when the composograph 2 for the ultimate resolution SAR image 1 after reducing, to the composograph 2
Zoom in and out and show operation.
To above-mentioned method, we are made that following detailed descriptions, and we are first to build a thunder in the present embodiment 1
Up to simulation system, the High Resolution SAR Images data of radar are generated in systems, the High Resolution SAR Images data are beaten
Wrap and inputted as the method in the present embodiment 1, that is, S1 in the present embodiment 1, the view data bag of reception radar generation simultaneously will
Described image packet is preserved.
After described image packet is received, we are again parsed view data bag, and we obtain SAR after parsing
View data, then described SAR image data are generated original SAR image by us simultaneously, after original SAR image is generated,
We are compressed processing to the original SAR image again, and the real current memory that we will obtain on a display screen can
The ultimate resolution SAR image of display.
For example：The original SAR image that we receive is 5000X5000 high-resolution SAR image, but ours is interior
Deposit can store be 500X500 image memory, it would be desirable to the high-resolution SAR image to 5000X5000 is pressed
Contracting so that SAR image meets our maximum memory storage spaces, that is, the storable ultimate resolution SAR of current memory
Image.
After the storable ultimate resolution SAR image of the current memory is obtained, we just can by the current memory
The ultimate resolution SAR image of storage and the ultimate resolution SAR image of history carry out scaled down, and we will be contracted
Ultimate resolution SAR image after small, after the ultimate resolution SAR image after we are reduced, concurrently sets timing
Time, we distinguish the ultimate resolution after fetching portion reduces in the timing of setting according to current scrolling progress
The generation composograph 2 of ultimate resolution SAR image 3 of the history after SAR image 1 and part diminution；
Need to parse, shown in process such as Fig. 2 processes (a) (b) (c) of the composograph 2 in the present embodiment 1, in figure
What solid box was represented is that can show the screen of ultimate resolution, and that dotted line frame 1 is represented is the ultimate resolution SAR after reducing
Image, what dotted line frame 2 was represented is the ultimate resolution SAR image of the history after reducing, and can be shown due to display screen
Ultimate resolution is 100X100 image, so we are needed to the storage storable ultimate resolution SAR image of current memory
Scaled down is carried out with the 500X500 of the ultimate resolution SAR image of history image, 100X100 image is compressed into, then
Shown.In the timing that we set, the maximum after fetching portion reduces is distinguished according to current scrolling progress
The generation composograph 2 of ultimate resolution SAR image 3 of the history after resolution stop and reserves (SAR) image 1 and part diminution.This implementation
Progress fetching portion in example 1 according to current scrolling means, such as：On a display screen it is shown that 20% reduce after institute
The ultimate resolution SAR image 3 for stating the history after the part of ultimate resolution SAR image 1 and 80% reduces carries out composite diagram
As 2, when constantly rolling, the ratio regular meeting shared by the ultimate resolution SAR image 1 after being reduced in composograph 2 is not
Disconnected change is big, and the continuous diminution of ratio regular meeting shared by the ultimate resolution SAR image 3 of the history after reducing, until synthesizing
100% is the ultimate resolution SAR image 1 after reducing in image 2, and the ultimate resolution of the history after reducing
SAR image 3 is 0, and the ultimate resolution SAR image 3 of the history after diminution is deleted.
It is wherein special, when we carry out the first time of this method, the not ultimate resolution of history of existence
SAR image, therefore, we of first time are just directly carried out the storable ultimate resolution SAR image of the current memory etc.
Scale smaller, finally without composograph 2, just directly shows on a display screen.
During when the composograph 2 for the ultimate resolution SAR image 1 after reducing, the composograph 2 is carried out
Scaling and display operation.
It is above-mentioned we need parsing be when the composograph 2 for diminution after the ultimate resolution SAR image 1
When, image now is 100X100 image, and we are amplified to image after this diminution on a display screen, and image is put
Big duration and wide put every time are twice, untill the ultimate resolution for being amplified to the image, and image down duration reduces every time with wide
One times, untill narrowing down to the adaptive size of screen.
Preferably, S1 includes described in the present embodiment 1：
S11, the view data bag of radar generation is received using communication socket mode；
S12, described image packet is preserved using chained list；
S13, regularly inquires about and described image packet whether is preserved in the chained list, if preserving, performs S2, deletes simultaneously
Described image packet, if not preserving, re-executes S11
The present embodiment 1 we in order to avoid the loss of described image packet, devise receipts number thread and inquiry thread,
It is the view data bag that radar generation is received using communication socket mode wherein to receive number thread；Preserve described using chained list simultaneously
View data bag；After described image packet has been preserved, whether we are inquired about in the chained list using inquiry thread timing and protected
Described image packet is deposited, if preserving, the described image packet of preservation is sent, S2 is performed, sent out while deleting
The described image packet sent, if not preserving, re-executes S11.
Preferably, described in the present embodiment 1 in S2, in addition to：Described image packet is parsed, SAR is obtained
View data and SAR image parameter information；Original SAR image any pixel position is calculated according to the SAR image parameter information
The longitude and latitude put.
What we needed further to parse is that described SAR image parameter information includes：The wide high parameter information of image, image
Four angle point longitude and latitude parameter informations.We are according to the obtained wide high parameter information of image and the angle point longitude and latitude parameter of image four letter
Breath calculates the longitude and latitude of original SAR image any pixel position.We obtain these parameter informations and are advantageous for that follow-up we are right
The analysis of image pixel, it is possible to increase the accuracy of graphical analysis.
In addition, described image packet is parsed at us, obtain SAR image data, while by the SAR image
Data generate original SAR image, are compressed processing to the original SAR image, we can also calculate the original SAR image
Any pixel position longitude and latitude, after the displayable ultimate resolution SAR image of the current memory is obtained, pass through mouse
The latitude and longitude information of image pixel is specified in selection, display.The latitude and longitude information of correspondence position, the SAR in SAR image is obtained
Four angle point longitudes and latitudes of image are contained in image parameter information, using bilinear interpolation method, can calculate and obtain in image
The latitude and longitude information of arbitrfary point.
The wherein specific calculation formula of longitude and latitude is as follows：
First, the linear interpolation on four angle point cross directions of image is obtained, is calculated by formula (1) (2) (3) (4).
Wherein, XtopAnd YtopThe respectively longitude and latitude of image upper left and upper right angle point after cross direction linear interpolation,
XbottomAnd YbottomThe respectively longitude and latitude of image lower-left and bottom right angle point after cross direction linear interpolation, X0、X1、X2、X3
Respectively image upper left, upper right, bottom right, the longitude of four angle points in lower-left, Y0、Y1、Y2、Y3Respectively image upper left, upper right, the right side
Under, the latitude of four angle points in lower-left, x is calculates point width in the picture, WpicFor the width of image.
Then, the linear interpolation on the high direction of image is calculated, obtains calculating the longitude and latitude of point by formula (5) (6).
Wherein, X and Y are respectively the longitude and latitude for calculating point, height of the y for calculating point in the picture, HpicFor image
It is high.
Preferably, also include in S2 described in the present embodiment 1：Obtaining the storable ultimate resolution of current memory
After SAR image, selected by mouse, the latitude and longitude information for specifying image pixel is shown on a display screen.It can be clicked in mouse
The latitude and longitude information for effectively showing specified point of arbitrary image, is conducive to the follow-up analysis to picture material and record.
Preferably, S2 includes described in the present embodiment 1：The single image maximum memory set according to user takes threshold
Value, calculating the original SAR image needs the multiple of compression and is compressed place to the original SAR image according to compression multiple
Reason, obtains the storable ultimate resolution SAR image of current memory.
Described image packet is parsed, obtained to above-mentioned preferably further parsing in detail by we at us
After SAR image data, it would be desirable to which the single image maximum memory set according to user takes threshold value, calculates the original SAR
Image needs the multiple compressed and is compressed processing to the original SAR image according to compression multiple and obtains current memory and can show
The ultimate resolution SAR image shown.We take threshold value in the single image maximum memory that user gives, and can so ensure this
Adaptively being carried out in effective maximum memory for invention, is sufficiently used internal memory, it is ensured that can obtain the maximum of maximum
Resolution stop and reserves (SAR) image, will not occur because of the phenomenon that low memory, image can not be shown again.
Embodiment 2
As shown in figure 3, a kind of real time imagery of carried SAR in the present embodiment 2 shows system, the system includes：Image
Data reception module, image adaptive module, picture roll display module, image scale operation module；
The data reception module, it is used to receive the view data bag of radar generation and preserves view data bag；
Described image adaptation module, it is used to be parsed described image packet, obtains SAR image data, together
When the SAR image data are generated into original SAR image, processing is compressed to the original SAR image, current memory is obtained
Storable ultimate resolution SAR image；
Described image scrolls module, and it is used for the ultimate resolution to the ultimate resolution SAR image and history
SAR image carries out scaled down, is gone through described in after respectively obtaining the ultimate resolution SAR image 1 after reducing and reducing
The ultimate resolution SAR image 3 of history, reduces while distinguishing fetching portion according to current scrolling progress in the timing of setting
The ultimate resolution SAR image 1 afterwards and the partly generation synthesis of ultimate resolution SAR image 3 of the history after diminution
Image 2；
Described image zoom operations module, it is used for the ultimate resolution SAR after composograph 2 is reduces
During image 1, operation is zoomed in and out and shows to the composograph 2.
In the present embodiment 2 we by above-mentioned system solve real time imagery display resolution in conventional method it is low,
Image show size can not adaptively, image be the problem of can not scale.The real time imagery for realizing carried SAR is shown, of the invention
Middle use image adaptive generation and the method adaptively shown, on the premise of ensureing that internal memory can use with display in real time, retain
The highest resolution of SAR image, realizes the scrolling display and scaling of high definition SAR image is checked.
Preferably, the data reception module includes：Data receipt unit, data query unit；
The data receipt unit, it is used to receive the view data bag of radar generation and protects described image packet
Deposit；
The data query unit, it is used to regularly inquire about described image data whether to be preserved in the data receipt unit
Bag, if preserving, image adaptive module is sent to by the described image packet of preservation, while deleting the figure sent
As packet, if not preserving, the data receipt unit receives the view data bag of radar generation and by the figure again
As packet is preserved.
We devise receipts number thread and information trunk in order to avoid the loss of described image packet in the present embodiment 2
Journey, wherein it is the view data bag that radar generation is received using communication socket mode to receive number thread；Preserved simultaneously using chained list
Described image packet；After described image packet has been preserved, we are inquired about in the chained list using inquiry thread timing is
No preservation described image packet, if preserving, the described image packet of preservation is sent, while deleting what is sent
Described image packet, if not preserving, the data receipt unit receives the view data bag of radar generation and will again
Described image packet is preserved.
Preferably, image adaptive module includes described in the present embodiment 2：Image analysis adaptive unit, image life
Into adaptive unit, compression of images adaptive unit；
Described image parses adaptive unit, and its view data bag for being used to receive is parsed, and obtains SAR image
Data and SAR image data preservation；
Described image generates adaptive unit, and it is used to read the SAR image data and according to the SAR image data
Generate original SAR image；
Described image compresses adaptive unit, and it is used to be compressed processing to the original SAR image, obtains in current
Deposit displayable ultimate resolution SAR image.
Preferably, picture roll display module includes described in the present embodiment 2：Image down display unit, image rolling
Dynamic display unit；
Described image reduces display unit, and it is used for the ultimate resolution to the ultimate resolution SAR image and history
SAR image carries out scaled down, respectively obtains the maximum of the ultimate resolution SAR image 1 and the history after reducing
Resolution stop and reserves (SAR) image；
Described image scrolls unit, and it is used in the timing of setting be obtained respectively according to current scrolling progress
The ultimate resolution SAR image 3 of the history after the ultimate resolution SAR image 1 and part diminution after the diminution of part
Generate composograph 2.
To it is above-mentioned preferably we need further to be parsed in detail, described image packet is solved at us
Analysis, is obtained after SAR image data, it would be desirable to which the single image maximum memory set according to user takes threshold value, calculates described
Original SAR image needs the multiple compressed and is compressed processing to the original SAR image according to compression multiple to obtain currently
The displayable ultimate resolution SAR image of internal memory.We take threshold value in the single image maximum memory that user gives, and so may be used
To ensure adaptively being carried out in effective maximum memory for the present invention, internal memory is sufficiently used, it is ensured that can obtain most
Big ultimate resolution SAR image, will not occur because of the phenomenon that low memory, image can not be shown again.
Preferably, the system also includes in the present embodiment 2：Time block, it is used to reduce display list in described image
Member will carry out scaled down to the ultimate resolution SAR image of the ultimate resolution SAR image and history, obtain after diminution
The ultimate resolution SAR image 1 and the history ultimate resolution SAR image after, time block setting timing,
So that described image scrolls unit and distinguishes fetching portion diminution according to current scrolling progress in the setting timing
The ultimate resolution SAR image 1 afterwards and the partly generation synthesis of ultimate resolution SAR image 3 of the history after diminution
Image 2.
The image manipulation used in above-described embodiment 1 and embodiment 2, wherein image manipulation pass through Qt programming realizations.Qt
It is a kind of C++ Development Frameworks, code supports cross-platform, and the image manipulation class QImage that Qt is provided can realize the reading of view data
Take, scale, rotate, the operation such as splicing.
, can be by image manipulation class to current in image scale operation module after the completion of the rolling switching display of image
Image is zoomed in and out and shown.After the completion of wherein present image refers to the rolling switching display of image, present image is last
Secondary composograph 2, image adaptive module saves the ultimate resolution of SAR image, and image amplification duration and width are put every time
It is twice, untill the ultimate resolution for being amplified to the image.Image down duration and wide each one times of diminution, narrow down to screen certainly
Untill adapting to size.
It should be noted that the adaptive size of the inherently screen of composograph 2 in the present embodiment 1 and embodiment 2.
Composograph 2 is completed after the automatic rolling switching display of image, and the image finally shown is the maximum resolution after above-mentioned diminution
Rate SAR image.Follow-up zoom operation is equal to the zoom operations to original SAR image, and maximum is amplified to above-mentioned maximum
Resolution ratio, minimum narrows down to the adaptive size of screen.
Image is when rolling switching, and size is the adaptive size of screen, after the completion of rolling, and new image can just amplify
Checked to ultimate resolution size.
In this manual, identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example with suitable
Mode is combined.In addition, in the case of not conflicting, those skilled in the art can be by the difference described in this specification
The feature of embodiment or example and non-be the same as Example or example is combined and combined.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. the real time imagery display methods of a kind of carried SAR, it is characterised in that this method comprises the following steps：S1, receives radar
The view data bag of generation simultaneously preserves described image packet；
S2, described image packet is parsed, and obtains SAR image data, while the SAR image data are generated original
SAR image, processing is compressed to the original SAR image, obtains the storable ultimate resolution SAR image of current memory；
S3, while the ultimate resolution SAR image to the ultimate resolution SAR image and history carries out scaled down, point
The ultimate resolution SAR image of the ultimate resolution SAR image and the history after not reduced, and determining in setting
When the time according to current scrolling progress distinguish fetching portion reduce after the ultimate resolution SAR image and part reduce after
The history ultimate resolution SAR image generation composograph；
S4, during when the composograph for the ultimate resolution SAR image after reducing, is zoomed in and out to the composograph
With display operation.
2. display methods according to claim 1, it is characterised in that the S1 includes：
S11, the view data bag of radar generation is received using communication socket mode；
S12, described image packet is preserved using chained list；
S13, regularly inquires about and described image packet whether is preserved in the chained list, if preserving, performs S2, while deleting described
View data bag, if not preserving, re-executes S11.
3. display methods according to claim 1 or 2, it is characterised in that in the S2, in addition to：By described image number
Parsed according to bag, obtain SAR image data and SAR image parameter information；Calculate former according to the SAR image parameter information
The longitude and latitude of beginning SAR image any pixel position.
4. display methods according to claim 3, it is characterised in that also include in the S2：Can obtaining current memory
After the ultimate resolution SAR image of storage, selected by mouse, the longitude and latitude letter for specifying image pixel is shown on a display screen
Breath.
5. display methods according to claim 1 or 2, it is characterised in that the S2 includes：The list set according to user
Open image maximum memory and take threshold value, calculating the original SAR image needs the multiple of compression and according to compression multiple to described
Original SAR image is compressed processing, obtains the storable ultimate resolution SAR image of current memory.
6. a kind of real time imagery of carried SAR shows system, it is characterised in that the system includes：View data receiving module, figure
As adaptation module, picture roll display module, image scale operation module；
The data reception module, it is used to receive the view data bag of radar generation and preserves view data bag；
Described image adaptation module, it is used to be parsed described image packet, obtains SAR image data, simultaneously will
The SAR image data generate original SAR image, are compressed processing to the original SAR image, obtaining current memory can deposit
The ultimate resolution SAR image of storage；
Described image scrolls module, and it is used for the ultimate resolution SAR figures to the ultimate resolution SAR image and history
As carrying out scaled down, the history after respectively obtaining the ultimate resolution SAR image after reducing and reducing is most
Big resolution stop and reserves (SAR) image, while distinguishing the institute after fetching portion reduces according to current scrolling progress in the timing of setting
State the ultimate resolution SAR image generation composograph of the history after ultimate resolution SAR image and part diminution；
Described image zoom operations module, it is used for the ultimate resolution SAR image after composograph is reduces
When, the composograph is zoomed in and out and shown operation.
7. display system according to claim 6, it is characterised in that the data reception module includes：Data receiver list
Member, data query unit；
The data receipt unit, it is used to receive the view data bag of radar generation and preserves described image packet；
The data query unit, it is used to regularly inquire about described image packet whether to be preserved in the data receipt unit,
If preserving, the described image packet of preservation is sent to image adaptive module, while deleting the described image sent
Packet, if not preserving, the data receipt unit receives the view data bag of radar generation and by described image again
Packet is preserved.
8. the display system according to claim 6 or 7, it is characterised in that described image adaptation module includes：Image solution
Analyse adaptive unit, image generation adaptive unit, compression of images adaptive unit；
Described image parses adaptive unit, and its view data bag for being used to receive is parsed, and obtains SAR image data
And the SAR image data are preserved；
Described image generates adaptive unit, and it is used to read the SAR image data and generated according to the SAR image data
Original SAR image；
Described image compresses adaptive unit, and it is used to be compressed processing to the original SAR image, and obtaining current memory can
The ultimate resolution SAR image of display.
9. the display system according to claim 6 or 7, it is characterised in that described image scrolling display module includes：Image
Reduce display unit, picture roll display unit；
Described image reduces display unit, and it is used for the ultimate resolution SAR figures to the ultimate resolution SAR image and history
As carrying out scaled down, the ultimate resolution of the ultimate resolution SAR image and the history after reducing is respectively obtained
SAR image；
Described image scrolls unit, and it is used in the timing of setting distinguish fetching portion according to current scrolling progress
The ultimate resolution SAR image generation of the history after the ultimate resolution SAR image and part diminution after diminution is closed
Into image.
10. display system according to claim 9, it is characterised in that the system also includes：Time block, it is used for
Described image reduces display unit by ultimate resolution SAR image progress to the ultimate resolution SAR image and history etc.
Scale smaller, the ultimate resolution SAR image after being reduced and after the ultimate resolution SAR image of the history is fixed
When module setting timing so that described image scroll unit it is described setting timing in entered according to current scrolling
Spend the ultimate resolution of the ultimate resolution SAR image after fetching portion reduces respectively and the history after the diminution of part
SAR image generates composograph.
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| CN107094241B (en) * | 2017-04-28 | 2019-05-24 | 北京无线电测量研究所 | A kind of the real time imagery display methods and system of carried SAR |
| CN114089339A (en) * | 2022-01-14 | 2022-02-25 | 南京天朗防务科技有限公司 | Real-time processing and displaying system and method for unmanned aerial vehicle-mounted SAR image |
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