CN110019953A - A kind of real-time quick look system of payload image data - Google Patents
A kind of real-time quick look system of payload image data Download PDFInfo
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Abstract
The present invention proposes a kind of real-time quick look system of payload image data, comprising: data acquisition module, for acquiring binary stream load image and engineering parameter data in real time；Data frame extraction process module carries out quality testing for extracting complete image data frame, engineering parameter frame, and to image data frame, obtains legal image data frame and its association engineering parameter frame；Data management module based on index with virtual memory is managed its location index on physical memory for storing legal image data frame and its association engineering parameter frame on virtual memory；Data regard module fastly, for image data frame carry out conventional fast view, association engineering parameter frame fastly depending on, various dimensions image DN value fastly depending on, data frame extraction process counts and log information regards fastly.The arbitrary switch that the present invention can be realized images with large data volume data interframe regards fastly, and the fast visual function of various dimensions image DN value provided can provide strong support for the confirmation of payload technology state.
Description
Technical field
Tested the invention mainly relates to imaging task payload stand-alone device self-test and payload floor synthetic etc.
Technical field is particularly suitable for images with large data volume in particular to a kind of real-time quick look system of payload image data
Data regard fastly and the fining analysis of image DN (Digital Number) value.
Background technique
Fast view in real time is carried out to the image data that imaging task payload equipment generates, is payload totality and load
The important channel that user confirms technology state, analyzes image data quality.Traditional payload image data is fast in real time
Viewing system generally uses image-data management method memory-based, provides image zooming, brightness regulation, contrast adjustment etc.
The fast visual function of common image data.1. this method Shortcomings in terms of following two cannot support images with large data volume data
The arbitrary switch of interframe regards fastly: data managing method memory-based is limited by memory source, can only manage certain amount most
Freshly harvested image data, the image data before can not roaming to hundreds of, even thousands of frames of history forward, this drawback are having
When effect load participates in the big data quantities tasks such as the mould winged, environmental test of long test period, embodiment is especially apparent；2. can not support to scheme
As the fining of DN value is analyzed: the engineering parameter of loading device when conventional method cannot be associated with presentation current image shot, it cannot
Point pixel DN value, rectangular area pixel DN value center of gravity, straight line covering pixel DN value trend and full frame image DN value histogram are provided
The information such as statistics, this limits payload totality and load user to the precisely handle of technology state to a certain extent
Control.
The ground experiment task that imaging task payload is participated in includes: the test of load stand-alone device self-test, effectively carries
Lotus subsystem desktop joint-trial, detector integration testing.In load stand-alone device self-test, Payload Subsystem desktop joint-trial field
Under scape, low-voltage differential signal (Low-Voltage is used between payload equipment and load floor synthetic test macro
Differential Signaling, LVDS) carry out image data transmission；Under detector integration testing scene, payload
Equipment passes channel downlink image data by number and gives satellite ground total control equipment, passes through transmission control by satellite ground total control equipment
Image data is sent to load floor synthetic test macro by agreement (Transmission Control Protocol, TCP).
Summary of the invention
It is an object of the invention to solve traditional payload image data, fast vision method cannot support big data quantity in real time
It the switching of image interframe fast view, defect that the fining of image DN value cannot be supported to analyze.
To achieve the above object, the present invention provides a kind of real-time quick look system of payload image data, the system packet
Include: data acquisition module, data frame extraction process module, data management module and data based on index and virtual memory regard fastly
Module；
The data acquisition module, for acquiring that payload equipment or satellite ground total control equipment send in real time two into
Stream loading image processed and engineering parameter data；
The data frame extraction process module is used to pass through format synchronization process from the binary stream load image and work
Complete image data frame, engineering parameter frame are extracted in journey supplemental characteristic, by data quality checking to image data frame into
Row screening obtains legal image data frame, and is associated with engineering ginseng for the engineering parameter frame of acquisition time arest neighbors therewith as it
Number frame；
The data management module based on index with virtual memory, for storing the legal image on virtual memory
Data frame and its association engineering parameter frame, and to described image data frame and its engineering parameter frame is associated in void on physical memory
The location index of quasi- memory headroom is managed；
The data regard module fastly, for carrying out the conventional fast view of image, association engineering parameter to the image data frame of management
Frame is regarded depending on, data frame extraction process statistics and log information depending on, various dimensions image DN value fastly fastly fastly.
As a kind of improvement of described device, the data acquisition module includes low-voltage differential signal data acquisition unit
With transmission control protocol network data acquisition unit；
The low-voltage differential signal data acquisition unit, for by low-voltage differential signal acquisition channel, acquisition to have
The binary stream load image and engineering parameter data that loading device is sent are imitated, and is that binary format is former by acquired data storage
Beginning data file；
The transmission control protocol network data acquisition unit passes through transmission control for acquiring satellite ground total control equipment
The binary stream load image and engineering parameter data that agreement is sent, and be binary format initial data by acquired data storage
File.
As a kind of improvement of described device, the data frame extraction process module includes: data frame extraction unit sum number
According to quality testing unit；
The data frame extraction unit, for from binary stream load image and engineering parameter data, position sliding to be retrieved
Frame swynchronization code obtains image data frame, the engineering parameter frame length of synchronous code guidance, and the binary stream for extracting the length carries
Lotus image and engineering parameter data obtain complete image data frame, engineering parameter frame；
The data quality checking unit, for whether including noise data in detection image data frame, whether lacking figure
As valid data, whether image data frame count continuous, image line count whether continuous, load operation mode code it is whether legal and
Whether CRC or cumulative and verification are correct, obtain legal image data frame, and by the engineering parameter of acquisition time arest neighbors therewith
Frame is associated with engineering parameter frame as it.
As a kind of improvement of described device, the data management module based on index and virtual memory includes: virtual
Main-memory data management unit and physical memory index management unit；
The virtual memory Data Management Unit, for for the legal image data frame and its association engineering parameter frame
It distributes virtual memory space and carries out storage management；
The physical memory index management unit, for establishing 4 indexes in physical memory: the 1st index is directed toward image
Data frame virtual memory start address, the 2nd index are directed toward image data frame virtual memory end address, and the 3rd index is directed toward association
Engineering parameter frame virtual memory start address, the 4th index are directed toward association engineering parameter frame virtual memory end address.
As a kind of improvement of described device, the data include that the conventional fast view unit of image data frame is closed depending on module fastly
Connection engineering parameter frame regards unit, straight line depending on unit, rectangular area pixel DN value center of gravity fastly depending on unit, the roaming of point pixel DN value fastly fastly
It is fast that covering pixel DN value trend regards unit, data frame extraction process log depending on unit, full frame image DN Data-Statistics histogram fastly fastly
Unit is regarded fastly depending on unit and data frame extraction process statistical information；
The conventional fast view unit of described image data frame, the image data frame for storing to virtual memory carry out normal image
Display, image data interframe switch at view, image data scaling, brightness of image and contrast adjustment and dark pixel correction fastly
Reason；
The association engineering parameter frame regards unit fastly, when for showing that load generates current image data frames with tabular form
The engineering parameter of equipment, and to the engineering parameter carry out physical quantity inverting, including inverting be counting, voltage, temperature, electric current,
Pressure and time；
The described fast view unit of pixel DN value roaming, for showing that current roaming position is corresponding in the fast viewed area of image data
Original image data, image grayscale value information；
The rectangular area pixel DN value center of gravity regards unit fastly, for showing selected rectangle in the fast viewed area of image data
The DN value position of centre of gravity in region, while showing the maximum value of image DN value in the rectangular area, minimum value, average value and variance
Statistical information；
Straight line covering pixel DN value trend regards unit fastly, for fast image viewing region show the starting point selected with
The DN value trend curve of the covered pixel of straight line made of end point link；
The full frame image DN Data-Statistics histogram regards unit fastly, for passing through histogram in the switching of image data interframe
The statistical information for the image data frame DN value that figure instant playback currently regards fastly；
The data frame extraction process log regards unit fastly, is used for tabular form to data frame extraction process abnormal day
Will, CRC check result information are regarded fastly；
The data frame extraction process statistical information regards fastly, for the binary stream load image with tabular form to acquisition
And engineering parameter data volume, the frame swynchronization code number retrieved, out of frame count, each operating mode image data frame is distributed and figure
As the discontinuous number of data frame count is regarded fastly.
As a kind of improvement of described device, the conventional fast view unit of described image data frame, including image data frame are conventional
Fast view subelement, image data frame switching subelement, image data scaling subelement, brightness of image and contrast adjustment are single
First, dark pixel correction process subelement；
The conventional fast view subelement of described image data frame, for be 8,16 or 24 to bit depth image data into
The fast view of row, image bit depth, picture traverse and the picture altitude information regarded fastly are configurable；
Described image data frame switching subelement, for providing current image data frames and previous frame image, next frame figure
Fast view switching between picture, this test assignment most previous frame image acquired and last frame image data；
Described image data scaling subelement, the scaling for current image data frames to be carried out with several ranks regard fastly；Institute
Stating several ranks includes 0.3 times, 0.5 times, 1 times, 2 times and 3 times；
Described image brightness and contrast's regulator unit, for adjusting brightness of image and contrast, pixel ash after adjusting
Angle value y are as follows:
Wherein, x is to adjust preceding pixel gray value, and b ∈ [- 1,1] is the brightness regulation factor, and c ∈ [- 1,1] is contrast tune
Save the factor；
The dark pixel correction process subelement, for by payload currently photosensitive pixel gray value and all dark pixels
The difference of average gray value, the gray value as Quick view images picture are regarded fastly.The wherein ranks position of dark pixel pixel in the picture
It sets configurable.
As a kind of improvement of described device, the rectangular area pixel DN value center of gravity is specifically included depending on unit fastly: rectangle
Region DN value center of gravity calculation regards subelement depending on subelement and rectangular area DN Data-Statistics information fastly fastly；
The rectangular area DN value center of gravity calculation includes: fastly to set i depending on subelement, and j is respectively the row of pixel in rectangular area
Column coordinate, the range of the i in the rectangular area, j are respectively i ∈ [m1:m2], j ∈ [n1:n2], DNi,jFor the coordinate pixel ash
Angle value, then:
[xm,ym] be current mouse drag area DN value position of centre of gravity；
The rectangular area DN Data-Statistics information regards subelement fastly, for showing image DN value in selected rectangular area
Maximum value, minimum value, the statistical information of average value and variance.
Present invention has an advantage that
1, the real-time quick look system of payload image data of the invention, the image data pipe based on index with virtual memory
Reason method realizes the arbitrary switch that theoretical value is disk size sized images interframe and regards fastly, solves conventional method by physics
The limitation of memory source is only capable of the problem of regarding most freshly harvested parts of images frame fastly；
2, the real-time quick look system of payload image data of the invention realizes the fast view of pixel DN value roaming, rectangle region
Domain pixel DN value center of gravity is regarded depending on, entire image DN Data-Statistics histogram depending on, straight line covering pixel DN value trend curve fastly fastly fastly, can
Confirmation for payload technology state provides strong support；
3, the implementing result of moon exploration program and mars exploration engineering payload test assignment shows proposed by the present invention have
The real-time quick look system of load image data is imitated, images with large data volume data can be effectively applicable to and regarded fastly in real time.
Detailed description of the invention
Fig. 1 is the system block diagram of the real-time quick look system of payload image data provided by the invention；
Fig. 2 is the image data acquiring of the real-time quick look system of payload image data provided by the invention, processing, fast view
Process；
Fig. 3 is the data frame extraction process process of the real-time quick look system of payload image data provided by the invention；
Fig. 4 is the number based on index with virtual memory of the real-time quick look system of payload image data provided by the invention
According to management method；
Fig. 5 is that the data of the real-time quick look system of payload image data provided by the invention regard module general frame fastly；
Fig. 6 is that the image of the real-time quick look system of payload image data provided by the invention is conventional to be provided depending on module fastly
Right-click menu option；
Fig. 7 is that the association engineering parameter frame of the real-time quick look system of payload image data provided by the invention regards list fastly
Show subfield；
Fig. 8 is that the association engineering parameter frame of the real-time quick look system of payload image data provided by the invention regards curve fastly
Show subfield；
Fig. 9 is the fast view of point pixel DN value roaming of the real-time quick look system of payload image data provided by the invention；
Figure 10 is the rectangular area pixel DN value center of gravity of the real-time quick look system of payload image data provided by the invention
Fast view；
Figure 11 is that the straight line of the real-time quick look system of payload image data provided by the invention covers pixel DN value trend
Curve regards fastly；
Figure 12 is the full frame image DN Data-Statistics histogram of the real-time quick look system of payload image data provided by the invention
The fast view of figure；
Figure 13 is the full frame image DN Data-Statistics histogram of the real-time quick look system of payload image data provided by the invention
Figure right-click menu；
Figure 14 is that the data frame extraction process log of the real-time quick look system of payload image data provided by the invention is fast
Depending on；
Figure 15 is that the data frame extraction process of the real-time quick look system of payload image data provided by the invention counts letter
The fast view of breath.
Specific embodiment
The present invention will be described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the image data acquiring of the real-time quick look system of payload image data of the invention is by LVDS number
It is completed according to collection plate and Ethernet data collection plate.Wherein LVDS data acquisition board is installed in host computer computer, and is passed through
LVDS cable is linked with imaging task payload, and the LVDS data acquisition board is used in payload stand-alone device self-test
It surveys, acquire binary stream load image and engineering parameter data under Payload Subsystem desktop joint-trial scene；Ethernet data
Collection plate is also installed in host computer computer, and is linked by industry ethernet with satellite ground total control equipment, and detector is used for
Binary stream load image and engineering parameter data are acquired under integration testing scene；The payload image data regards fastly in real time
System completed by the general function library such as LVDS, TCP network the acquisition of binary system real-time streaming data, data frame extraction process,
Data management, data regard fastly.
LVDS data acquisition board and Ethernet data collection plate are all made of general goods shelf products, big data quantity payload
Image data is realized depending on the main real-time quick look system of payload image data through the invention fastly in real time.
As shown in Fig. 2, the real-time quick look system of payload image data includes data acquisition module, data frame extraction
Processing module, data management module and data based on index and virtual memory regard module fastly.
Wherein, the data acquisition module according to acquisition interface it is different be divided into again LVDS interface data acquisition unit and
TCP network interface data acquisition unit.
The LVDS low-voltage differential signal data acquisition unit is detected by LVDS board, board initializes, board number
The real-time acquisition of binary stream load image and engineering parameter data is realized according to the general purpose functions such as acquisition and board closing；It is described
Client of the TCP network interface data acquisition unit as TCP is linked with the satellite ground total control equipment as server end,
Binary stream load image and work are realized by operations such as netinit, network linking, network data acquisition and link closings
The real-time acquisition of journey supplemental characteristic.After two ways acquires image data, the data of acquisition are stored as binary system initial data
File.
The data frame extraction process module is responsible for from binary stream load image and engineering parameter data, position sliding inspection
Complete image data frame, engineering parameter frame are extracted after rope frame swynchronization code, and quality testing is carried out to image data frame, are closed
Method image data frame, and engineering parameter frame, processing stream are associated with using the engineering parameter frame of acquisition time arest neighbors therewith as it
Journey is as shown in Figure 3；It specifically includes: data frame extraction unit and data quality checking unit；
The data frame extraction unit, for from binary stream load image and engineering parameter data, position sliding to be retrieved
Frame data synchronous code obtains the image data frame of synchronous code guidance, the length of engineering parameter frame, extract the two of the length into
Stream loading image processed and engineering parameter data obtain complete image data frame, engineering parameter frame；
The data quality checking unit, for whether including noise data in detection image data frame, whether lacking figure
Whether picture valid data, image data frame count continuous, whether image line counting continuous, whether load operation mode code legal,
Whether CRC or cumulative and verification are correct, obtain legal picture frame, and the engineering parameter frame of acquisition time arest neighbors therewith is made
Engineering parameter frame is associated with for it.
The data management module based on index with virtual memory is used for legal image data frame and its association engineering
Parameter frame is stored to virtual memory space, and to the image data frame and its is associated with engineering parameter frame virtual on physical memory
The location index of memory headroom is managed；As shown in Figure 4；It specifically includes: virtual memory Data Management Unit and physical memory
Index management unit；
The virtual memory Data Management Unit, for for the legal image data frame and its association engineering parameter frame
It distributes virtual memory space and carries out storage management；
The physical memory index management unit, for establishing 4 indexes in physical memory: the 1st index is directed toward image
Data frame virtual memory start address, the 2nd index are directed toward image data frame virtual memory end address, and the 3rd index is directed toward association
Engineering parameter frame virtual memory start address, the 4th index are directed toward association engineering parameter frame virtual memory end address.
Described image regards module fastly, as shown in figure 5, centered on the fast visual interface of present image, left, down, right difference
Including following subfield: data frame extraction process statistical information shows that subfield, full frame image DN Data-Statistics histogram show subfield, straight
Line covers pixel DN value trend curve and shows that subfield, data frame extraction process journal displaying subfield, current image data frames are closed
Join engineering parameter list display subfield, current image data frames association engineering parameter curve shows subfield etc..The data regard fastly
Module is subdivided into the conventional fast view unit of image data frame, association engineering parameter frame regards unit fastly, point pixel DN value roaming regards fastly
Unit, rectangular area pixel DN value center of gravity regard unit, full frame image DN primary system depending on unit, straight line covering pixel DN value trend fastly fastly
Meter histogram regards unit depending on unit and data frame extraction process statistical information fastly depending on unit, the log of data frame extraction process fastly fastly；
The conventional fast view unit of described image data frame, the image data frame for storing to virtual memory carry out normal image
It has been shown that, the switching of image data interframe, image data scaling, brightness of image and contrast adjustment and dark pixel correction process；Tool
Body includes:
The conventional fast view subelement of described image data frame, for be 8,16 or 24 to bit depth image data into
The fast view of row, image bit depth, picture traverse and picture altitude information are configurable, and conventional display unit provides right-click menu selection such as
Shown in Fig. 6；
Described image data frame switching subelement, for providing current image data frames and previous frame image, next frame figure
As the switching between the most previous frame image of, this test assignment acquisition, last frame image data；
Described image data scaling subelement, for carrying out 0.3 times, 0.5 times, 1 times, 2 times and 3 to current image data frames
The scaling of total 5 ranks regards fastly again；
Described image brightness and contrast's regulator unit, for adjusting brightness of image and contrast, pixel ash after adjusting
Angle value y are as follows:
Wherein, x is to adjust preceding pixel gray value, and b ∈ [- 1,1] is the brightness regulation factor, and c ∈ [- 1,1] is contrast tune
Save the factor；
The dark pixel corrects subelement, for by payload, currently photosensitive pixel gray value to subtract all dark pixels
The difference of average gray value, the gray value as Quick view images picture are regarded fastly.The wherein ranks position of dark pixel pixel in the picture
It sets configurable.Antidote includes 1. average gray value DN that 2 steps calculate all dark pixelsmean2. photosensitive pixel gray scale
Value and DNmeanDifference, as fast image viewing gray value.
The association engineering parameter frame regards unit fastly, when for showing that load generates current image data frames with tabular form
The engineering parameter of equipment carries out physical quantity inverting to the engineering parameter, including inverting is counting, voltage, temperature, electric current, pressure
Power and time, as shown in Figure 7；The corresponding engineering parameter of the every row of list, double-clicks list row, can be by the history number of the row parameter
Subfield is shown according to curve is drawn on, or it is shown that subfield deletes (if being added to the parameter before) from curve, such as Fig. 8
It is shown；Curve subfield can show that the history curve of multiple parameters, different parameters are drawn with different colours simultaneously, a newest frame
The value of the corresponding parameter of image is drawn on the rightmost side of curve, and follow-up data data will continue to push from right to left before.
The described fast view unit of pixel DN value roaming, for the image data display area of the heart in the user interface, right button
After selecting " mouse roaming " item in menu, mouse, can be in the floating frame of mouse position in image display area mobile roaming
Show the corresponding original image data in current location, gray value of image, as shown in Figure 9；
The rectangular area pixel DN value center of gravity regards unit fastly, the image data display area for the heart in the user interface
Left mouse button after selecting " mouse roaming " item in right-click menu, is pinned and simultaneously in image display area dragging in domain, and meeting is in mouse
The floating frame of cursor position shows the DN value position of centre of gravity of current dragging rectangular area, while showing image DN value in the region
The statistical informations such as maximum value, minimum value, average value, variance, as shown in Figure 10, the box that dash-dotted gray line is filled in figure is the area
The DN value center of gravity in domain；Specifically include: region DN value center of gravity calculation regards subelement depending on subelement and region DN Data-Statistics information fastly fastly；
The region DN value center of gravity calculation includes: fastly to set i depending on subelement, and j is respectively that the ranks of pixel in rectangular area are sat
Mark, the range of the i in the rectangular area, j are respectively i ∈ [m1:m2], j ∈ [n1:n2], DNi,jFor the grey scale pixel value, then:
[xm,ym] be current mouse drag area DN value position of centre of gravity；
The rectangular area DN Data-Statistics information regards subelement fastly, for being shown in mouse down left button and carrying out dragging shape
At rectangular area in image DN value the statistical informations such as maximum value, minimum value, average value, variance.
The straight line covering pixel DN value trend curve regards unit fastly, in image data display area, right-click menu
After middle selection " mouse roaming " item, when pinning left mouse button and being dragged, straight line covers pixel DN value trend and shows subfield,
It is aobvious that the trend curve of the DN value of the covered pixel of straight line made of meeting links starting point, the end point of mouse drag carries out linkage
Show, as shown in figure 11.
The full frame image DN Data-Statistics histogram regards unit fastly, in the switching of image data interframe, histogram to divide
Column instant playback present image DN Data-Statistics information, as shown in figure 12.Its granularity counted includes every 1 gradation intervals, every 10 ash
Spend interval, between every 100 gradation intervals, every 200 gradation intervals, every 300 gradation intervals, every 500 gradation intervals, every 1000 gray scale
The granularity of statistics can be selected in the right-click menu of histogram such as Figure 13 every, 8 kinds of every 2000 gradation intervals.Histogram
Ordinate value represent and fall into the pixel of corresponding interval and account for the percentage of the total pixel of image.
The data frame extraction process log regards unit fastly, for data frame extraction process abnormal log, the school image CRC
The information such as error checking mistake, are shown with tabular form.The information being particularly shown includes: first image synchronization code search result letter
Breath, out of frame exception, image data frame count discontinuous exception, CRC check mistake etc..Log list per head position line by line with
Different icons identify the type of this log, when in log information including the characters such as " failure ", "abnormal", with red chart
Mark, when in log information including the characters such as " success ", " normal ", with green table id, other logs are with blue chart
Mark.As shown in figure 14.
The data frame extraction process statistical information regards unit fastly, for acquisition original image data amount, retrieve
Frame swynchronization code number, the statistics such as out of frame counts, the distribution of each operating mode image data frame of load, image frame count are discontinuous
Information shown with tabular form, as shown in figure 15.
Method process flow is as follows: 1. data acquisition module completes adopting for binary stream load image and engineering parameter data
Collection is stored with file；2. data frame extraction process module is responsible for passing through lattice from binary stream load image and engineering parameter data
The processing such as formula synchronization, quality testing extract complete image data frame and its association engineering parameter frame；3. based on index and void
The data management module of quasi- memory is managed images with large data volume data frame, association engineering parameter frame；4. data regard mould fastly
Block in addition to completing conventional fast image viewing function, also provides a point various dimensions DN value and other finings such as regards fastly to image data frame
Analysis of image data function.
Method proposed by the present invention be successfully applied to Chang'e-2, the goddess in the moon No. three, the goddess in the moon No. four, the goddess in the moon No. five, in
State is for the first time in the payload floor synthetic test macro of mars exploration task, successful execution topography and geomorphology camera, landing phase
Machine, panorama camera, extreme ultraviolet camera, moon base optical telescope, high resolution camera, intermediate-resolution camera, infrared imaging spectrum
The test assignment of the loading devices such as analyzer, task action result show: 1. the system can support the figure of hard-disk capacity size
As the arbitrary switch of data interframe；2. the provided fast vision method of image data is to confirm that technology state, imaging task have
Effect loading analysis image data provides powerful support.
The present invention is directed to the real-time quick look system of traditional imaging task payload image data, cannot support large data volume
As interframe switches fast view, image DN value cannot be supported to refine problem analysis, propose it is a kind of based on physical memory index management and
The image data that virtual memory data management combines fast vision method in real time, solves conventional method and is limited by memory source and be only capable of
The problem of fast view part most freshly harvested image data frame；The association engineering parameter frame that the present invention realizes regards fastly, puts pixel DN value
The fast view of roaming, rectangular area pixel DN value center of gravity regard fastly, straight line covering pixel DN value trend curve regards fastly, entire image DN primary system
Meter histogram such as regards at the functions fastly, can provide strong support for the confirmation of loading device state of the art.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (7)
1. a kind of real-time quick look system of payload image data, which is characterized in that the system comprises: data acquisition module,
Data frame extraction process module, data management module and data based on index and virtual memory regard module fastly；
The data acquisition module, for acquiring the binary stream of payload equipment or the transmission of satellite ground total control equipment in real time
Load image and engineering parameter data；
The data frame extraction process module is used to join by format synchronization process from the binary stream load image and engineering
Complete image data frame and engineering parameter frame are extracted in number data, image data frame is sieved by data quality checking
Choosing obtains legal image data frame and its association engineering parameter frame；
The data management module based on index with virtual memory, for storing the legal image data on virtual memory
Frame and its association engineering parameter frame, and to described image data frame and its engineering parameter frame is associated with virtual interior on physical memory
The location index for depositing space is managed；
The data regard module fastly, fast for carrying out the conventional fast view of image, association engineering parameter frame to the image data frame of management
It is regarded fastly depending on, data frame extraction process statistics and log information fastly depending on, various dimensions image DN value.
2. the real-time quick look system of payload image data according to claim 1, which is characterized in that the data acquisition
Module includes low-voltage differential signal data acquisition unit and transmission control protocol network data acquisition unit；
The low-voltage differential signal data acquisition unit, for acquiring and effectively carrying by low-voltage differential signal acquisition channel
The binary stream load image and engineering parameter data that lotus equipment is sent, and be binary format original number by acquired data storage
According to file；
The transmission control protocol network data acquisition unit passes through transmission control protocol for acquiring satellite ground total control equipment
The binary stream load image and engineering parameter data of transmission, and be binary format initial data text by acquired data storage
Part.
3. the real-time quick look system of payload image data according to claim 1 or 2, which is characterized in that the data
Frame extraction process module includes: data frame extraction unit and data quality checking unit；
The data frame extraction unit, for from binary stream load image and engineering parameter data, position sliding retrieval frame to be same
Code is walked, the image data frame and engineering parameter frame length of synchronous code guidance is obtained, extracts the binary stream load of the length
Image and engineering parameter data obtain complete image data frame and engineering parameter frame；
The data quality checking unit, in detection image data frame whether comprising noise data, whether missing image has
Imitate whether data, image data frame count are continuous, whether image line counting is continuous, whether load operation mode code is legal and CRC
Or whether cumulative and verification is correct, obtains legal image data frame, and by the engineering parameter frame of acquisition time arest neighbors therewith
Engineering parameter frame is associated with as it.
4. the real-time quick look system of payload image data according to claim 1, which is characterized in that described based on index
Data management module with virtual memory includes: virtual memory Data Management Unit and physical memory index management unit；
The virtual memory Data Management Unit, for being distributed for the legal image data frame and its association engineering parameter frame
Virtual memory space carries out storage management；
The physical memory index management unit, for establishing 4 indexes in physical memory: the 1st index is directed toward image data
Frame virtual memory start address, the 2nd index are directed toward image data frame virtual memory end address, and the 3rd index is directed toward association engineering
Parameter frame virtual memory start address, the 4th index are directed toward association engineering parameter frame virtual memory end address.
5. the real-time quick look system of payload image data according to claim 1, which is characterized in that the data regard fastly
Module includes: that the conventional fast view unit of image data frame, association engineering parameter frame regard unit, the fast view list of point pixel DN value roaming fastly
Member, rectangular area pixel DN value center of gravity regard unit, full frame image DN Data-Statistics depending on unit, straight line covering pixel DN value trend fastly fastly
Histogram regards unit depending on unit and data frame extraction process statistical information fastly depending on unit, the log of data frame extraction process fastly fastly；
The conventional fast view unit of described image data frame, it is aobvious that the image data frame for storing to virtual memory carries out normal image
Show, image data interframe switches fast view, image data scaling, brightness of image and contrast adjustment and dark pixel correction process；
The association engineering parameter frame regards unit fastly, equipment when for showing that load generates current image data frames with tabular form
Engineering parameter, and to the engineering parameter carry out physical quantity inverting, including inverting be counting, voltage, temperature, electric current, pressure
And the time；
The described fast view unit of pixel DN value roaming, for showing that selected roaming position is corresponding in the fast viewed area of image data
Original image data, image grayscale value information；
The rectangular area pixel DN value center of gravity regards unit fastly, for being shown in selected rectangle region in the fast viewed area of image data
The DN value position of centre of gravity in domain, at the same show the maximum value of image DN value in the rectangular area, minimum value, average value and variance system
Count information；
The straight line covering pixel DN value trend regards unit fastly, for showing selected starting point and end in fast image viewing region
The DN value trend curve of the covered pixel of straight line made of being linked between point；
The full frame image DN Data-Statistics histogram regards unit fastly, for being by histogram in the switching of image data interframe
When the statistical information of image data frame DN value that currently regards fastly of display；
The data frame extraction process log regards unit fastly, is used for tabular form to data frame extraction process abnormal log, CRC
Check results information is regarded fastly；
The data frame extraction process statistical information regards fastly, for the binary stream load image and work with tabular form to acquisition
Journey supplemental characteristic amount, the frame swynchronization code number retrieved, out of frame count, each operating mode image data frame is distributed and picture number
It is regarded fastly according to the discontinuous number of frame count.
6. the real-time quick look system of payload image data according to claim 5, which is characterized in that described image data
The conventional fast view unit of frame, including image data frame conventional fast view subelement, image data frame switching subelement, image data scaling
Subelement, brightness of image and contrast adjustment subelement, dark pixel correction process subelement；
The conventional fast view subelement of described image data frame, for being regarded fastly to image data, the image bit depth that regards fastly, image
Width and picture altitude information are configurable, and bit depth configuration information includes 8,16 and 24；
Described image data frame switching subelement, for providing current image data frames and previous frame image, next frame image, sheet
Fast view switching between the most previous frame image and last frame image data of secondary test assignment acquisition；
Described image data scaling subelement, the scaling for current image data frames to be carried out with several ranks regard fastly；If described
Dry rank includes 0.3 times, 0.5 times, 1 times, 2 times and 3 times；
Described image brightness and contrast's regulator unit, for adjusting brightness of image and contrast, grey scale pixel value y after adjusting
Are as follows:
Wherein, x be adjust preceding pixel gray value, b ∈ [- 1,1] be the brightness regulation factor, c ∈ [- 1,1] be contrast adjustment because
Son；
The dark pixel correction process subelement, for currently photosensitive pixel gray value to be averaged with all dark pixels by payload
The difference of gray value, the gray value as Quick view images picture are regarded fastly.Wherein the column locations of dark pixel pixel in the picture can
Configuration.
7. the real-time quick look system of payload image data according to claim 5, which is characterized in that the rectangular area
Pixel DN value center of gravity is specifically included depending on unit fastly: rectangular area DN value center of gravity calculation regards subelement and rectangular area DN Data-Statistics fastly
Information regards subelement fastly；
The rectangular area DN value center of gravity calculation includes: fastly to set i depending on subelement, and j is respectively that the ranks of pixel in rectangular area are sat
Mark, the range of the i in the rectangular area, j are respectively i ∈ [m1:m2], j ∈ [n1:n2], DNi,jFor the coordinate grey scale pixel value,
Then:
[xm,ym] be current mouse drag area DN value position of centre of gravity；
The rectangular area DN Data-Statistics information regards subelement fastly, for showing the maximum of image DN value in selected rectangular area
Value, minimum value, the statistical information of average value and variance.
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