CN107094241B - A kind of the real time imagery display methods and system of carried SAR - Google Patents
A kind of the real time imagery display methods and system of carried SAR Download PDFInfo
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- 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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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
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Abstract
The present invention relates to the real time imagery display methods and system of a kind of carried SAR, and this method comprises the following steps: receiving the image data packet that radar generates；Image data packet is parsed, SAR image data is obtained, SAR image is handled, obtains maximum resolution SAR image；By current maximum resolution SAR image and it is preceding once obtain obtaining that maximum resolution SAR image carries out scaled down, regenerate composograph；The operation of adaptive scaling and display is carried out to composograph.A kind of system is further related to, which includes: image data receiving module, image adaptive module, picture roll display module, image scale operation module.The method that the present invention is generated using image adaptive and adaptively shown remains the highest resolution of SAR image, realizes and check to the scrolling display and scaling of high definition SAR image under the premise of guaranteeing available memory and real-time display.
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 technique
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.Real-time display is treated during the work time for traditional carried SAR display control software
Thumbnail data, the high definition SAR image data of generation then afterwards utilize special pattern process computer to image data into
Row is handled and is checked.Although the method for real-time display thumbnail alleviates the data receiver of display control software and shows processing
Pressure ensure that the real-time that image is shown, but reduce the resolution ratio of real time imagery, make operator can not be to imaging
Content makes accurate judgement.Meanwhile traditional real time imagery display methods secures the width and height of SAR image, it cannot be dynamic
The variation of display area size is adapted to, while image adaptive scaling not being supported to check yet.
Summary of the invention
The technical problems to be solved by the present invention are: existing tradition real time imagery display methods reduces real time imagery
Resolution ratio, and the width and height of SAR image are also secured, the variation of display area size cannot be dynamically adapted to, is not also supported
Image adaptive scaling is checked.
To solve technical problem above, the present invention provides a kind of real time imagery display methods of carried SAR, this method
Include the following steps:
S1 receives the image data packet that radar generates and saves described image data packet；
S2 parses described image data packet, obtains SAR image data, while the SAR image data being generated
Original SAR image carries out compression processing to the original SAR image, obtains the storable maximum resolution SAR figure of current memory
Picture；
S3, while equal proportion contracting is carried out to the maximum resolution SAR image of the maximum resolution SAR image and history
It is small, the maximum resolution SAR image of the maximum resolution SAR image and the history after reducing is respectively obtained, and setting
The maximum resolution SAR image after fetching portion reduces and part are distinguished according to current scrolling progress in fixed timing
The maximum resolution SAR image of the history after diminution generates composograph；
S4 carries out the composograph when the composograph is the maximum resolution SAR image after reducing
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 shows that size can not adaptive, image the problem of can not scaling.The real time imagery for realizing carried SAR is shown, of the invention
The middle method generated using image adaptive and adaptively show is retained under the premise of guaranteeing available memory and real-time display
The highest resolution of SAR image, realizes and checks to the scrolling display and scaling of high definition SAR image.
Further, include: in the S1
S11 receives the image data packet of radar generation in the way of communication socket；
S12 saves described image data packet using chained list；
S13 is periodically inquired and whether is saved described image data packet in the chained list, if saving, is executed S2, is deleted simultaneously
Described image data packet re-executes S11 if not saving.
It is above-mentioned further the utility model has the advantages that we using communication socket mode receive image data packet and using chained lists
Described image data packet is saved, in this way can be to avoid loss of the image data packet in transmission process, while being inquired using timing
Whether described image data packet is saved in the chained list, if sending the described image data packet of preservation, together when saving
When delete the described image data packet that has sent, be to save the space of data storage in order to reduce memory, lower memory in this way
Occupancy improves the processing speed of data.
Further, in the S2, further includes: described image data 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.
It is above-mentioned further the utility model has the advantages that obtain these parameter informations be conducive to it is subsequent we image pixel is divided
Analysis, can be improved the accuracy of image 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 subsequent analysis and note to picture material
Record.
Further, in the S2 further include: after obtaining the storable maximum resolution SAR image of current memory, lead to
Mouse selection is crossed, shows the latitude and longitude information of specified image pixel on a display screen.
It further, include: that threshold value is occupied according to the single image maximum memory of user setting in the S2, described in calculating
Multiple that original SAR image needs to compress simultaneously carries out compression processing to the original SAR image according to compression multiple, obtains current
The storable maximum resolution SAR image of memory.
It is above-mentioned further the utility model has the advantages that the single image maximum memory given in user occupies threshold value, can protect in this way
Demonstrate,proving of the invention is carried out in effective maximum memory, is sufficiently used memory, is guaranteed to obtain maximum
The phenomenon that maximum resolution SAR image, and will not occurring because of low memory, image can not be shown.
The invention further relates to a kind of real time imagery display system of carried SAR, which includes: that image data receives mould
Block, image adaptive module, picture roll display module, image scale operation module；
The data reception module is used to receive the image data packet of radar generation and saves image data packet；
Described image adaptation module is used to parse described image data packet, obtains SAR image data, together
When the SAR image data are generated into original SAR image, compression processing is carried out to the original SAR image, obtains current memory
Storable maximum resolution SAR image；
Described image scrolls module, is used for the maximum resolution to the maximum resolution SAR image and history
SAR image carries out scaled down, the history after respectively obtaining the maximum resolution SAR image after reducing and reducing
Maximum resolution SAR image, while in the timing of setting according to current scrolling progress distinguish fetching portion reduce after
The maximum resolution SAR image and part reduce after the history maximum resolution SAR image generate composograph；
Described image zoom operations module is used for the maximum resolution SAR after composograph is to reduce
When image 1, the composograph is zoomed in and out and display operation.
Beneficial effects of the present invention: by above-mentioned system solve real time imagery display resolution in conventional method it is low,
Image shows that size can not adaptive, image the problem of can not scaling.The real time imagery for realizing carried SAR is shown, of the invention
The middle method generated using image adaptive and adaptively show is retained under the premise of guaranteeing available memory and real-time display
The highest resolution of SAR image, realizes and checks to the scrolling display and scaling of high definition SAR image.
Further, the data reception module includes: data receipt unit, data query unit；
The data receipt unit is used to receive the image data packet of radar generation and protects described image data packet
It deposits；
The data query unit is used to periodically inquire described image data whether to be saved in the data receipt unit
Packet sends image adaptive module for the described image data packet of preservation, while deleting the figure sent if saving
As data packet, if not saving, the data receipt unit receives the image data packet of radar generation and again by the figure
As data packet saves.
It is above-mentioned further the utility model has the advantages that we using communication socket mode receive image data packet and using chained lists
Described image data packet is saved, in this way can be to avoid loss of the image data packet in transmission process, while being inquired using timing
Whether described image data packet is saved in the chained list, if sending the described image data packet of preservation, together when saving
When delete the described image data packet that has sent, be to save the space of data storage in order to reduce memory, lower memory in this way
Occupancy improves the processing speed of data.
Further, described image adaptation module includes: image analysis adaptive unit, the adaptive list of image generation
Member, compression of images adaptive unit；
Described image parses adaptive unit, and the image data packet for being used to receive parses, and obtains SAR image
Data and SAR image data preservation；
Described image generates adaptive unit, is used to read the SAR image data and according to the SAR image data
Generate original SAR image；
Described image compresses adaptive unit, is used to carry out compression processing to the original SAR image, obtain in current
Deposit displayable maximum resolution SAR image.
Further, described image scrolling display module includes: image down display unit, picture roll display unit；
Described image reduces display unit, is used for the maximum resolution to the maximum resolution SAR image and history
SAR image carries out scaled down, respectively obtains the maximum point of the maximum resolution SAR image and the history after reducing
Resolution SAR image；
Described image scrolls unit, is used to be obtained respectively in the timing of setting according to current scrolling progress
The maximum resolution SAR image of the history after the maximum resolution SAR image and part diminution after the diminution of part is raw
At composograph.
Further, the system further include: timing module, be used for described image reduce display unit will to it is described most
The maximum resolution SAR image of big resolution stop and reserves (SAR) image and history carries out scaled down, and described maximum point after being reduced
After the maximum resolution SAR image of resolution SAR image and the history, timing module sets timing, so that described image
It scrolls unit and distinguishes the maximum after fetching portion reduces according to current scrolling progress in the setting timing
The maximum resolution SAR image of the history after resolution stop and reserves (SAR) image and part diminution generates composograph.
It is above-mentioned further to set timing the utility model has the advantages that passing through, it is operated in each operation by image, image energy
Enough scrolling display for adaptively completing image within the set time well.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the real time imagery display methods of carried SAR of the invention；
Fig. 2 is composograph (a) (b) (c) process schematic in the embodiment of the present invention 1；
Fig. 3 is the real time imagery display system schematics of kind carried SAR of the invention
Attached drawing: 1, the maximum resolution SAR image after reducing；2, composograph；3, the history after reducing
Maximum resolution SAR image.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the 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
It is rapid:
S1 receives the image data packet that radar generates and saves described image data packet；
S2 parses described image data packet, obtains SAR image data, while the SAR image data being generated
Original SAR image carries out compression processing to the original SAR image, obtains the storable maximum resolution SAR figure of current memory
Picture；
S3, while equal proportion contracting is carried out to the maximum resolution SAR image of the maximum resolution SAR image and history
It is small, the maximum resolution SAR image of the maximum resolution SAR image 1 and the history after reducing is respectively obtained, and setting
The maximum resolution SAR image 1 after fetching portion reduces and portion are distinguished according to current scrolling progress in fixed timing
The maximum resolution SAR image 3 of the history after reducing is divided to generate composograph 2；
S4, when the composograph 2 is the maximum resolution SAR image 1 after reducing, to the composograph 2
It zooms in and out and display operation.
To above-mentioned method, we are made that following detailed descriptions, 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
It wraps as the method input in the present embodiment 1, that is, S1 in the present embodiment 1, the image data packet that reception radar generates simultaneously will
Described image data packet saves.
After receiving described image data packet, we again parse image data packet, we obtain SAR after parsing
Image data, then we are by the original SAR image of SAR image data generation simultaneously, after generating original SAR image,
We carry out compression processing to the original SAR image again, and the current memory that we will obtain reality on a display screen can
The maximum resolution SAR image of display.
Such as: our received original SAR images are the high-resolution SAR images of 5000X5000, but ours is interior
Deposit can store be 500X500 image memory, it would be desirable to the high-resolution SAR image of 5000X5000 is pressed
Contracting, so that SAR image meets our maximum memory storage spaces, that is, the storable maximum resolution SAR of current memory
Image.
After obtaining the storable maximum resolution SAR image of the current memory, we just can by the current memory
The maximum resolution SAR image of storage and the maximum resolution SAR image of history carry out scaled down, we will be contracted
Maximum resolution SAR image after small concurrently sets timing after the maximum resolution SAR image after we are reduced
Time, we distinguish the maximum resolution after fetching portion reduces according to current scrolling progress in the timing of setting
The maximum resolution SAR image 3 of the history after SAR image 1 and part diminution generates composograph 2；
It needs to parse, shown in the process of the composograph 2 in the present embodiment 1 such as Fig. 2 process (a) (b) (c), in figure
What solid box represented is the screen that can show maximum resolution, and that dotted line frame 1 represents is the maximum resolution SAR after reducing
Image, what dotted line frame 2 represented is the maximum resolution SAR image of the history after reducing, and can be shown due to display screen
Maximum resolution is the image of 100X100, so we need to the storage storable maximum resolution SAR image of current memory
Scaled down is carried out with the image of the 500X500 of the maximum resolution SAR image of history, is compressed into the image of 100X100, then
It is shown.In the timing that we set, the maximum after fetching portion reduces is distinguished according to current scrolling progress
The maximum resolution SAR image 3 of the history after resolution stop and reserves (SAR) image 1 and part diminution generates composograph 2.This implementation
Meant in example 1 according to the progress fetching portion of current scrolling, such as: on a display screen it is shown that 20% reduce after institute
The maximum resolution SAR image 3 of the history after stating maximum resolution SAR image 1 and the diminution of 80% part carries out composite diagram
As 2, when constantly rolling, the maximum resolution SAR image 1 after reducing in composograph 2 is occupied not than regular meeting
It is disconnected to become larger, and the continuous diminution of ratio regular meeting shared by the maximum resolution SAR image 3 of the history after reducing, until synthesis
100% is the maximum resolution SAR image 1 after reducing in image 2, and the maximum resolution of the history after reducing
SAR image 3 is 0, and the maximum 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, and the maximum resolution of history is not present
SAR image, therefore, we of first time just directly carry out the storable maximum resolution SAR image of the current memory etc.
Scale smaller is not having to composograph 2 finally, is just directly showing on a display screen.
When the composograph 2 is the maximum resolution SAR image 1 after reducing, the composograph 2 is carried out
Scaling and display operation.
It is above-mentioned we need to parse be when the composograph 2 be reduce after the maximum resolution SAR image 1
When, image at this time is the image of 100X100, we amplify this image after reducing on a display screen, and image is put
Big duration and wide put every time are twice, and until the maximum resolution for being amplified to the image, image down duration reduces every time with wide
One times, until narrowing down to the adaptive size of screen.
Preferably, include: in the S1 described in the present embodiment 1
S11 receives the image data packet of radar generation in the way of communication socket；
S12 saves described image data packet using chained list；
S13 is periodically inquired and whether is saved described image data packet in the chained list, if saving, is executed S2, is deleted simultaneously
Described image data packet re-executes S11 if not saving
The present embodiment 1 we in order to avoid described image data packet loss, devise receive number thread and inquiry thread,
Wherein receiving number thread is the image data packet that radar generation is received in the way of communication socket；Simultaneously using described in chained list preservation
Image data packet；After having saved described image data packet, whether we are inquired in the chained list using inquiry thread timing and are protected
Described image data packet is deposited, if saving, the described image data packet of preservation is sent, executes S2, while deleting and having sent out
The described image data packet sent re-executes S11 if not saving.
Preferably, in the S2 described in the present embodiment 1, further includes: parse described image data packet, obtain SAR
Image 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 set.
What we needed further to parse is that the 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 four angle point longitude and latitude parameter of image letter
Breath calculates the longitude and latitude of original SAR image any pixel position.It is to be conducive to that subsequent we are right that we, which obtain these parameter informations,
The analysis of image pixel can be improved the accuracy of image analysis.
In addition, described image data packet is parsed at us, obtain SAR image data, while by the SAR image
Data generate original SAR image, carry out compression processing to the original SAR image, we can also calculate the original SAR image
The longitude and latitude of any pixel position pass through mouse after obtaining the displayable maximum resolution SAR image of the current memory
Selection shows the latitude and longitude information of specified image pixel.The latitude and longitude information of corresponding position, the SAR in obtaining SAR image
The four angle point longitudes and latitudes that image is contained in image parameter information can be calculated in image using bilinear interpolation method
The latitude and longitude information of arbitrary point.
Wherein the specific calculation formula of longitude and latitude is as follows:
Firstly, obtaining the linear interpolation in four angle point wide directions of image, calculated by formula (1) (2) (3) (4).
Wherein, XtopAnd YtopThe respectively longitude and latitude of image upper left and upper right angle point after wide direction linear interpolation,
XbottomAnd YbottomThe respectively longitude and latitude of image lower-left and bottom right angle point after wide direction linear interpolation, X0、X1、X2、X3
Respectively image upper left, upper right, bottom right, four angle points in lower-left longitude, Y0、Y1、Y2、Y3Respectively image upper left, upper right, the right side
Under, the latitudes of four angle points in lower-left, x is to calculate the width of point 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 is respectively the longitude and latitude for calculating point, and y is the height calculated point in the picture, HpicFor image
It is high.
Preferably, in the S2 described in the present embodiment 1 further include: obtaining the storable maximum resolution of current memory
It after SAR image, is selected by mouse, shows the latitude and longitude information of specified image pixel 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 subsequent analysis to picture material and record.
It preferably, include: that threshold is occupied according to the single image maximum memory of user setting in the S2 described in the present embodiment 1
Value calculates the original SAR image and needs the multiple compressed and carried out at compression according to compression multiple to the original SAR image
Reason, obtains the storable maximum resolution SAR image of current memory.
Described image data packet is parsed at us, is obtained to above-mentioned preferably further parsing in detail by we
After SAR image data, it would be desirable to occupy threshold value according to the single image maximum memory of user setting, calculate the original SAR
Image needs the multiple compressed and obtains current memory to the original SAR image progress compression processing according to compression multiple to show
The maximum resolution SAR image shown.We occupy threshold value in the single image maximum memory that user gives, and can guarantee this in this way
Invention is carried out in effective maximum memory, is sufficiently used memory, is guaranteed to obtain maximum maximum
The phenomenon that resolution stop and reserves (SAR) image, and will not occurring because of low memory, image can not be shown.
Embodiment 2
As shown in figure 3, the real time imagery display system of one of the present embodiment 2 carried SAR, the system include: image
Data reception module, image adaptive module, picture roll display module, image scale operation module；
The data reception module is used to receive the image data packet of radar generation and saves image data packet；
Described image adaptation module is used to parse described image data packet, obtains SAR image data, together
When the SAR image data are generated into original SAR image, compression processing is carried out to the original SAR image, obtains current memory
Storable maximum resolution SAR image；
Described image scrolls module, is used for the maximum resolution to the maximum resolution SAR image and history
SAR image carries out scaled down, and described after respectively obtaining the maximum resolution SAR image 1 after reducing and reducing is gone through
The maximum resolution SAR image 3 of history, while fetching portion is distinguished according to current scrolling progress in the timing of setting and is reduced
The maximum resolution SAR image 3 of the history after the maximum resolution SAR image 1 and part diminution afterwards generates synthesis
Image 2；
Described image zoom operations module is used for the maximum resolution SAR after composograph 2 is to reduce
When image 1, the composograph 2 is zoomed in and out and display operation.
In the present embodiment 2 we by above-mentioned system solve real time imagery display resolution in conventional method it is low,
Image shows that size can not adaptive, image the problem of can not scaling.The real time imagery for realizing carried SAR is shown, of the invention
The middle method generated using image adaptive and adaptively show is retained under the premise of guaranteeing available memory and real-time display
The highest resolution of SAR image, realizes and checks to the scrolling display and scaling of high definition SAR image.
Preferably, the data reception module includes: data receipt unit, data query unit；
The data receipt unit is used to receive the image data packet of radar generation and protects described image data packet
It deposits；
The data query unit is used to periodically inquire described image data whether to be saved in the data receipt unit
Packet sends image adaptive module for the described image data packet of preservation, while deleting the figure sent if saving
As data packet, if not saving, the data receipt unit receives the image data packet of radar generation and again by the figure
As data packet saves.
We devise in order to avoid the loss of described image data packet and receive number thread and information trunk in the present embodiment 2
Journey, wherein receiving number thread is the image data packet for receiving radar generation in the way of communication socket；It is saved simultaneously using chained list
Described image data packet；After having saved described image data packet, we are inquired in the chained list using inquiry thread timing is
No preservation described image data packet sends the described image data packet of preservation if saving, while deleting and having sent
Described image data packet, if not saving, the data receipt unit receives the image data packet of radar generation again and will
Described image data packet saves.
Preferably, the image adaptive module described in the present embodiment 2 includes: image analysis adaptive unit, image life
At adaptive unit, compression of images adaptive unit；
Described image parses adaptive unit, and the image data packet for being used to receive parses, and obtains SAR image
Data and SAR image data preservation；
Described image generates adaptive unit, is used to read the SAR image data and according to the SAR image data
Generate original SAR image；
Described image compresses adaptive unit, is used to carry out compression processing to the original SAR image, obtain in current
Deposit displayable maximum resolution SAR image.
Preferably, the picture roll display module described in the present embodiment 2 includes: image down display unit, image rolling
Dynamic display unit；
Described image reduces display unit, is used for the maximum resolution to the maximum resolution SAR image and history
SAR image carries out scaled down, respectively obtains the maximum of the maximum resolution SAR image 1 and the history after reducing
Resolution stop and reserves (SAR) image；
Described image scrolls unit, is used to be obtained respectively in the timing of setting according to current scrolling progress
The maximum resolution SAR image 3 of the history after the maximum 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 data packet is solved at us
Analysis, after obtaining SAR image data, it would be desirable to threshold value be occupied according to the single image maximum memory of user setting, described in calculating
Original SAR image needs the multiple compressed and carries out compression processing to the original SAR image according to compression multiple to obtain currently
The displayable maximum resolution SAR image of memory.We occupy threshold value in the single image maximum memory that user gives, and in this way may be used
To guarantee that of the invention carried out in effective maximum memory, it is sufficiently used memory, guarantees to obtain most
The phenomenon that big maximum resolution SAR image, and will not occurring because of low memory, image can not be shown.
Preferably, system in the present embodiment 2 further include: timing module is used to reduce display in described image single
Member will carry out scaled down to the maximum resolution SAR image of the maximum resolution SAR image and history, after obtaining diminution
The maximum resolution SAR image 1 and the history maximum resolution SAR image after, timing module set timing,
So that described image scrolls unit and distinguishes fetching portion diminution according to current scrolling progress in the setting timing
The maximum resolution SAR image 3 of the history after the maximum resolution SAR image 1 and part diminution afterwards generates synthesis
Image 2.
The image operation used in above-described embodiment 1 and embodiment 2, wherein image operation is programmed by Qt realizes.Qt
It is a kind of C++ Development Framework, code support is cross-platform, and the image operation class QImage that Qt is provided can be realized the reading of image data
It takes, scales, rotation, the operation such as splicing.
In image scale operation module after the completion of the rolling of image switches display, class can be operated by image to current
Image is zoomed in and out and is shown.After the completion of wherein present image refers to that the rolling switching of image is shown, present image is last
Secondary composograph 2, image adaptive module save the maximum resolution of SAR image, and image amplification duration and width are put every time
It is twice, until the maximum resolution for being amplified to the image.Image down duration and wide each one times of diminution, narrow down to screen certainly
Until 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.?
After composograph 2 completes the automatic rolling switching display of image, the image finally shown is the maximum resolution after above-mentioned diminution
Rate SAR image.Subsequent enlargement reduction operation is equal to the zoom operations to original SAR image, and maximum is amplified to above-mentioned maximum
Resolution ratio, minimum narrow down to the adaptive size of screen.
For image when rolling switching, size is the adaptive size of screen, and after the completion of rolling, new image can amplify
It is checked to maximum resolution size.
In the present specification, the schematic representation of the above terms does not necessarily have to refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples with suitable
Mode combines.In addition, without conflicting with each other, those skilled in the art can be by difference described in this specification
The feature of embodiment or example and different embodiments or examples is combined.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of real time imagery display methods of carried SAR, which is characterized in that this method comprises the following steps: S1, receives radar
The image data packet of generation simultaneously saves described image data packet；
S2 parses described image data packet, obtains SAR image data, while SAR image data generation is original
SAR image carries out compression processing to the original SAR image, obtains the storable maximum resolution SAR image of current memory；
S3, while scaled down is carried out to the maximum resolution SAR image of the maximum resolution SAR image and history, point
The maximum resolution SAR image of the maximum resolution SAR image and the history after not reduced, and determine in setting
When the time according to current scrolling progress distinguish fetching portion reduce after the maximum resolution SAR image and part reduce after
The maximum resolution SAR image of the history generate composograph, the maximum after partially reducing in the composograph
The occupied ratio of resolution stop and reserves (SAR) image constantly becomes larger with current scrolling progress, the maximum point of the history after the diminution of part
The occupied ratio of resolution SAR image is constantly reduced with current scrolling progress, until 100% is part contracting in the composograph
The maximum resolution SAR image after small, and the maximum resolution SAR image of the history after partially reducing is in the conjunction
It is 0 at ratio occupied in image, and the maximum resolution SAR image of the history after the diminution of part is deleted；
S4 zooms in and out the composograph when the composograph is the maximum resolution SAR image after reducing
And display operation.
2. display methods according to claim 1, which is characterized in that include: in the S1
S11 receives the image data packet of radar generation in the way of communication socket；
S12 saves described image data packet using chained list；
S13 is periodically inquired and whether is saved described image data packet in the chained list, if saving, executes S2, while described in deletion
Image data packet re-executes S11 if not saving.
3. display methods according to claim 1 or 2, which is characterized in that in the S2, further includes: by described image number
It is parsed according to packet, obtains SAR image data and SAR image parameter information；It is calculated according to the SAR image parameter information former
The longitude and latitude of beginning SAR image any pixel position.
4. display methods according to claim 3, which is characterized in that in the S2 further include: can obtaining current memory
It after the maximum resolution SAR image of storage, is selected by mouse, shows the longitude and latitude letter of specified image pixel on a display screen
Breath.
5. display methods according to claim 1 or 2, which is characterized in that include: the list according to user setting in the S2
It opens image maximum memory and occupies threshold value, calculate the multiple that the original SAR image needs to compress and according to compression multiple to described
Original SAR image carries out compression processing, obtains the storable maximum resolution SAR image of current memory.
6. a kind of real time imagery display system of carried SAR, which is characterized in that the system includes: image data receiving module, figure
As adaptation module, picture roll display module, image scale operation module；
The data reception module is used to receive the image data packet of radar generation and saves image data packet；
Described image adaptation module is used to parse described image data packet, obtains SAR image data, simultaneously will
The SAR image data generate original SAR image, carry out compression processing to the original SAR image, obtaining current memory can deposit
The maximum resolution SAR image of storage；
Described image scrolls module, is used for the maximum resolution SAR figure to the maximum resolution SAR image and history
As carrying out scaled down, the history after respectively obtaining the maximum resolution SAR image after reducing and reducing is most
Big resolution stop and reserves (SAR) image, while the institute after fetching portion reduces is distinguished according to current scrolling progress in the timing of setting
The maximum resolution SAR image of the history after stating maximum resolution SAR image and part diminution generates composograph, described
The occupied ratio of maximum resolution SAR image after partially reducing in composograph constantly becomes with current scrolling progress
Greatly, the occupied ratio of maximum resolution SAR image of the history after part reduces constantly is reduced with current scrolling progress,
Until in the composograph 100% be part reduce after the maximum resolution SAR image, and part reduce after it is described
The maximum resolution SAR image of history in the composograph occupied ratio be 0, and part reduce after described in
The maximum resolution SAR image of history is deleted；
Described image zoom operations module is used for the maximum resolution SAR image after composograph is to reduce
When, the composograph is zoomed in and out and display operation.
7. display system according to claim 6, which is characterized in that the data reception module includes: data receiver list
Member, data query unit；
The data receipt unit is used to receive the image data packet of radar generation and saves described image data packet；
The data query unit is used to periodically inquire described image data packet whether to be saved in the data receipt unit,
If saving, image adaptive module is sent by the described image data packet of preservation, while deleting the described image sent
Data packet, if not saving, the data receipt unit receives the image data packet of radar generation and again by described image
Data packet saves.
8. display system according to claim 6 or 7, which is characterized in that described image adaptation module includes: image solution
Analyse adaptive unit, image generates adaptive unit, compression of images adaptive unit；
Described image parses adaptive unit, and the image data packet for being used to receive parses, and obtains SAR image data
And the SAR image data save；
Described image generates adaptive unit, is used to read the SAR image data and is generated according to the SAR image data
Original SAR image；
Described image compresses adaptive unit, is used to carry out compression processing to the original SAR image, obtaining current memory can
The maximum resolution SAR image of display.
9. display system according to claim 6 or 7, which is characterized in that it includes: image that described image, which scrolls module,
Reduce display unit, picture roll display unit；
Described image reduces display unit, is used for the maximum resolution SAR figure to the maximum resolution SAR image and history
As carrying out scaled down, the maximum resolution of the maximum resolution SAR image and the history after reducing is respectively obtained
SAR image；
Described image scrolls unit, is used in the timing of setting distinguish fetching portion according to current scrolling progress
The maximum resolution SAR image of the history after the maximum resolution SAR image and part diminution after diminution, which generates, closes
At image.
10. display system according to claim 9, which is characterized in that the system further include: timing module is used for
Described image, which reduces display unit, will carry out the maximum resolution SAR image of the maximum resolution SAR image and history etc.
Scale smaller, it is fixed after the maximum resolution SAR image of the maximum resolution SAR image and the history after being reduced
When module set timing so that described image scroll unit in the setting timing according to current scrolling into
Spend the maximum resolution of the maximum resolution SAR image after fetching portion reduces respectively and the history after the diminution of part
SAR image generates composograph.
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| CN109298421B (en) * | 2018-11-14 | 2022-09-30 | 北京遥感设备研究所 | SAR imaging system capable of configuring image amplitude and implementation method thereof |
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