CN107340501A - Radar video method of processing display based on OpenGL ES - Google Patents
Radar video method of processing display based on OpenGL ES Download PDFInfo
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- CN107340501A CN107340501A CN201710529594.9A CN201710529594A CN107340501A CN 107340501 A CN107340501 A CN 107340501A CN 201710529594 A CN201710529594 A CN 201710529594A CN 107340501 A CN107340501 A CN 107340501A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Processing Or Creating Images (AREA)
Abstract
The present invention relates to radar data processing technology field, specifically provide a kind of radar video method of processing display based on OpenGL ES, the fundamental figure unit of radar drawing image is selected first, scene model is built according to the attribute of fundamental figure unit, then target echo data and terrain return data are obtained, Coordinate Conversion is carried out to input data, obtains coordinate value of the scene model in space；The viewpoint position of light source is set again, calculates the color-values of object in scene model, opposite vertexes tinter and fragment shader inject specific source code, determine the type of texture stickup and the mode of illumination condition, render the display effect of fundamental figure unit；Finally according to the spatial value of scene model, fundamental figure unit after rendering or the figure being made up of two and above fundamental figure unit are converted into pixel data deposit frame buffer, and the pixel data is launched onto painting canvas.
Description
Technical field
The present invention relates to radar data processing technology field, the radar video processing more particularly to based on OpenGL ES is aobvious
Show method.
Background technology
The window that radar video display picture is user and radar directly interacts, its design follow two aspect principles：
First, radar function is embodied comprehensively；Second, picture is smooth, image quality is fine and smooth.At present, radar video processing is typically dispatched with master control
Completed in same processor, this processing mode has following defect：
1st, video processing data amount is big, calculates and takes the excessive CPU time, causes master control scheduling resource nervous, even if outside
Coprocessor is hung, but bus data transfer is equally time-consuming, improvement unobvious；
When the 2nd, carrying out Image Rendering by the RGB of all data points merely, picture is likely to occur interim card, while display effect
Stiff, especially when handling terrain data, spike is obvious, and Consumer's Experience effect is not ideal enough.
The content of the invention
To overcome at least one defect existing for above-mentioned prior art, the invention provides a kind of based on OpenGL ES's
Radar video method of processing display, comprises the following steps：
Step 1, the fundamental figure unit of radar drawing image is selected, is built according to the attribute of the fundamental figure unit
Scene model, wherein the attribute of the fundamental figure unit includes vertex position and quantity；
Step 2, input data is obtained, the input data includes target echo data and terrain return data, to described
Input data carries out Coordinate Conversion, obtains coordinate value of the scene model in space；
Step 3, the viewpoint position of light source is set, calculates the color-values of object in the scene model, opposite vertexes tinter
Specific source code is injected with fragment shader, the type of texture stickup and the mode of illumination condition are determined, to the scenery mould
Type is atomized, is transparent, fuzzy special effect processing, so as to render the display effect of fundamental figure unit；
Step 4, according to the spatial value of scene model, fundamental figure unit after rendering or by two and with
The figure of the upper fundamental figure unit composition is converted into pixel data deposit frame buffer, and the pixel data is launched and arrives picture
On cloth.
Preferably, the fundamental figure unit is the one of which in point, line, polygon.
Preferably, the fundamental figure unit is triangle.
Radar video method of processing display provided by the invention based on OpenGL ES, has the advantages that：
1st, image procossing is done using the ARM GPU embedded, release CPU calculates the pressure of multitude of video data, will more provided
Source is applied to system call, ensures radar sequential.
2nd, because OpenGL ES2.0 drawing techniques are therefore the numbers of data point needed for drawing based on region vertex coloring
Amount greatly reduces, so as to mitigate the pressure of bus communication, lifting processor CPU execution efficiency.
3rd, GPU function of hardware acceleration is relied on, by OpenGL ES2.0 abundant patterns rendering capability, video is shown
More true to nature, image quality is finer and smoother.
Brief description of the drawings
Fig. 1 is the flow chart of the radar video method of processing display based on OpenGL ES.
Embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.
It should be noted that：The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining this hair
It is bright, and be not considered as limiting the invention.In the accompanying drawings, same or similar label represents same or like from beginning to end
Element or with same or like function element.Described embodiment is part of the embodiment of the present invention, rather than entirely
The embodiment in portion, in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply meaning
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention be protected
Protect the limitation of scope.
In view of this mode of original plug-in coprocessor of primary processor, is deposited in terms of radar system scheduling, Video processing
The defects of, the present invention choose ARM deal with device, its CPU be merely responsible for master control scheduling, original video processing module is transferred to
GPU processing embedded ARM, because GPU possesses the image-capable of brilliance, painted in terms of video is shown using OpenGL ES2.0
Diagram technology, pass through the operation performed needed for self-defined tinter so that application program can be realized abundant by hardware-accelerated
Figure renders, and so as to lift the quality of radar video picture, can either solve to cause at its because CPU calculates multitude of video data
The problem of efficiency declines is managed, and can improves the feature of video display picture, and the quality that lifting picture is shown can extensive use
It is obvious to optimizing and improving Video processing display effect in Radar Technology field in terms of 3-D view and special effect processing.
A kind of radar video method of processing display based on OpenGL ES provided by the invention, as shown in figure 1, its step
It is as follows：
Step 1：Build scene model
The elementary cell that OpenGL ES2.0 draw is point, line and polygon, and when drawing radar video picture, demand is most
More is setting-out and picture, and line and face essence are the cumulative of pixel, when establishing scene model, it is important to calculate graphics vertex
Position.Detection range is typically abstracted into the line being a little summed into, bitmap selection GL_POINTS modes during setting-out, draws landform
When, landform is subjected to netted division, each grid is spliced by triangle, and two triangles are determined by four summits, then will
Two triangle splices quadrangularly, is finally spliced into terrain graph by three dimensional constitution with substantial amounts of quadrangle, that is, establishes landform
Model.If processor disposal ability is stronger, it can suitably select more summits to carry out structural relief, pass through follow-up wash with watercolours
Dye, the effect of display will be more smooth, true to nature.
Step 2：Calculate space coordinates
Three-dimensional point processing is done in all summits when calculating in OpenGL ES2.0, i.e., (x, y, z) can be with representation space
Arbitrfary point, when calculating topographic(al) point space coordinates, three-dimensional sphere coordinate data of the topographic(al) point in body system can be utilized, and
The carrier aircraft attitude information that inertial navigation provides, calculates position (x, y, z) of the topographic(al) point in geographic coordinate system, by reconstructing digital
Shape information, you can structure terrain profile, circular are as follows：
Assuming that the azimuth of radar irradiation current is Az, angle of pitch El, and topographic(al) point distance R, carrier aircraft longitude λ, latitude φ, sea
Degree of lifting h, attitude orientation angle Ψ, pitching angle theta and the roll angle γ of aircraft.Select datum markIn summary count
According to according to formula
Topographic(al) point X is to distance：
Topographic(al) point Y-direction distance：
Topographic(al) point Z-direction height：
Z=h+Rsin (EL)
3-dimensional digital topographic(al) point vertex data (x, y, z) can be calculated, R in formulaEIt is terrestrial equator radius.
Step 3：Coloring mode is set
The vertex position information of all range points is tried to achieve by above step, creates vertex shader, and work out summit and
Color device source code or executable code, describe, by the vertex coloring operation of execution, to compile vertex shader, bind vertex attribute rope
Attribute variable's (vertex position) is guided to, obtains the address of " loaded " position matrix constant, location matrix constant is tied to caching pair
As so far, trying to achieve the position data on all summits.Input using this type of information as fragment shader, by rotation, illumination,
The operation such as shade and color calculating, is calculated by the fragment colors of four apex envelopes.Equally, it is normal to obtain loading color vector
The address of amount, it is tied to color cache object.
Step 4：Launch cache image
Because OpenGL ES2.0 are the shape libraries of a platform independence, after this technology to drawing 3-D graphic,
Need the physical window with a reality to associate, the image information in caching could be projected painting canvas and shown, take display
Device parameter, including display height, width information.Initialize EGL,.EGL configuration is selected, and creates drawing window.Due to internal memory
Image divides context, therefore enabled switch attribute is needed before image is switched.By connecting drawing window and context, you can from
View data is read in frame internal memory to show in display end.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (3)
1. a kind of radar video method of processing display based on OpenGL ES, it is characterised in that comprise the following steps：
Step 1, the fundamental figure unit of radar drawing image is selected, scenery is built according to the attribute of the fundamental figure unit
Model, wherein the attribute of the fundamental figure unit includes vertex position and quantity；
Step 2, input data is obtained, the input data includes target echo data and terrain return data, to the input
Data carry out Coordinate Conversion, obtain coordinate value of the scene model in space；
Step 3, the viewpoint position of light source is set, calculates the color-values of object in the scene model, opposite vertexes tinter and piece
Section tinter injects specific source code, determines the type of texture stickup and the mode of illumination condition, the scene model is entered
Row atomization, transparent, fuzzy special effect processing, so as to render the display effect of fundamental figure unit；
Step 4, according to the spatial value of scene model, fundamental figure unit after rendering or by two and above institute
The figure for stating fundamental figure unit composition is converted into pixel data deposit frame buffer, and the pixel data is launched and arrives painting canvas
On.
2. radar video method of processing display according to claim 1, it is characterised in that the fundamental figure unit is
One of which in point, line, polygon.
3. radar video method of processing display according to claim 2, it is characterised in that the fundamental figure unit is three
It is angular.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110738721A (en) * | 2019-10-12 | 2020-01-31 | 四川航天神坤科技有限公司 | Three-dimensional scene rendering acceleration method and system based on video geometric analysis |
| CN111551930A (en) * | 2020-05-18 | 2020-08-18 | 南京众博达电子科技有限公司 | Radar image display method based on layered display |
| CN111932689A (en) * | 2020-07-03 | 2020-11-13 | 北京庚图科技有限公司 | Three-dimensional object rapid selection method adopting ID pixel map |
| CN114217894A (en) * | 2021-12-10 | 2022-03-22 | 中国人民解放军96901部队25分队 | Method for realizing radar screen display by adopting Qt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070195100A1 (en) * | 1998-03-31 | 2007-08-23 | Brown John M | System and method for assessing performance optimizations in a graphics system |
| CN102854495A (en) * | 2012-07-10 | 2013-01-02 | 中国船舶重工集团公司第七二四研究所 | Method for implementing radar video rendering display based on direct 3D (D3D) alpha blending technology |
| CN103971396A (en) * | 2014-05-24 | 2014-08-06 | 哈尔滨工业大学 | OpenGL ES (open graphics library for embedded system) implementation method for ray casting algorithm under ARM+GPU (advanced RISC machine+graphic processing unit) heterogeneous architecture |
| CN104142494A (en) * | 2014-07-17 | 2014-11-12 | 陕西长岭电子科技有限责任公司 | GPU-based video displaying method for rotary antenna radar |
-
2017
- 2017-07-02 CN CN201710529594.9A patent/CN107340501A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070195100A1 (en) * | 1998-03-31 | 2007-08-23 | Brown John M | System and method for assessing performance optimizations in a graphics system |
| CN102854495A (en) * | 2012-07-10 | 2013-01-02 | 中国船舶重工集团公司第七二四研究所 | Method for implementing radar video rendering display based on direct 3D (D3D) alpha blending technology |
| CN103971396A (en) * | 2014-05-24 | 2014-08-06 | 哈尔滨工业大学 | OpenGL ES (open graphics library for embedded system) implementation method for ray casting algorithm under ARM+GPU (advanced RISC machine+graphic processing unit) heterogeneous architecture |
| CN104142494A (en) * | 2014-07-17 | 2014-11-12 | 陕西长岭电子科技有限责任公司 | GPU-based video displaying method for rotary antenna radar |
Non-Patent Citations (2)
| Title |
|---|
| TIAN-QI FAN等: "OpenGL-Based Hybrid GO/PO Computation for RCS of Electrically Large Complex Objects", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
| 刘天桥: "基于OpenGL的天基预警雷达视景仿真方法研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110738721A (en) * | 2019-10-12 | 2020-01-31 | 四川航天神坤科技有限公司 | Three-dimensional scene rendering acceleration method and system based on video geometric analysis |
| CN110738721B (en) * | 2019-10-12 | 2023-09-01 | 四川航天神坤科技有限公司 | Three-dimensional scene rendering acceleration method and system based on video geometric analysis |
| CN111551930A (en) * | 2020-05-18 | 2020-08-18 | 南京众博达电子科技有限公司 | Radar image display method based on layered display |
| CN111551930B (en) * | 2020-05-18 | 2022-03-18 | 南京众博达电子科技有限公司 | Radar image display method based on layered display |
| CN111932689A (en) * | 2020-07-03 | 2020-11-13 | 北京庚图科技有限公司 | Three-dimensional object rapid selection method adopting ID pixel map |
| CN111932689B (en) * | 2020-07-03 | 2023-11-14 | 北京庚图科技有限公司 | Three-dimensional object quick selection method adopting ID pixel graph |
| CN114217894A (en) * | 2021-12-10 | 2022-03-22 | 中国人民解放军96901部队25分队 | Method for realizing radar screen display by adopting Qt |
| CN114217894B (en) * | 2021-12-10 | 2023-09-05 | 中国人民解放军96901部队25分队 | Method for realizing radar screen display by adopting Qt |
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Application publication date: 20171110 |