CN102854495A - Method for implementing radar video rendering display based on direct 3D (D3D) alpha blending technology - Google Patents
Method for implementing radar video rendering display based on direct 3D (D3D) alpha blending technology Download PDFInfo
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Abstract
The invention relates to a clear and diversified display which is capable of achieving effects of plane position indicator display, A-scope display, afterglow display and the like on radar under the condition that the real-time requirement is met by utilizing a direct 3D (D3D) alpha blending technology. When D3D or open graphics library (Open GL) is utilized to perform texture mapping rendering to display a radar video and a texture coordinate transformation technology is utilized to perform infinite scaling, a ground power unit (GPU) performs an image scaling according to a certain interpolation algorithm, accordingly, definition of obtained image is poor, and image resolution ratio is inconsistent with a resolution ratio proportion scale after the radar video is subjected to coordinate transformation. Besides, the achievement of afterglow display is extremely complicated, and the display effect is not entirely satisfactory. The method has the remarkable advantages that the infinite scaling of the radar video can be achieved, the accuracy is not affected, the moore profiling can not be generated, the afterglow display of the A-scope display and the plane position indicator display can be achieved, the display effect is close to that of a plane position indicator display fluorescent displayer, plane position indicator display targets can be subjected to Block display, and size and quantities of targets can be conveniently distinguished by operating staffs.
Description
One technical field
The invention belongs to the radar video signal real-time display technology, employing Direct3D color blend (Alpha Blending) technology is aobvious to P, display effect more clear more diversified demonstrations under requirement of real time such as A is aobvious, twilight sunset, this controls personnel for radar terminal and finds faster and better target, carries out corresponding task and has important using value.
Two background technologies
The software implementation of radar video shows both can adopt the GDI+ technology, also can adopt D3D or OpenGL technology to show.When adopting the GDI+ technology to carry out the radar video demonstration, although api function is numerous, realize simple, but owing between video card hardware layer and application layer, also needing interpretation layer to carry out interpretation of programs, therefore executing efficiency is lower, can't realize under the prerequisite of requirement of real time that function is played up in the series of complexes such as the electrodeless convergent-divergent demonstration of radar video.When adopting D3D or OpenGL to carry out the simple textures mapping to play up to show radar video, although requirement of real time, but when carrying out electrodeless convergent-divergent with the texture coordinate converter technique, GPU carries out image scaling according to certain interpolation algorithm (such as neighbor interpolation, secondary linear interpolation, secondary cube interpolation etc.), thus obtained image definition is relatively poor, and the resolution engineer's scale that image resolution ratio and radar video carry out after the coordinate transform is inconsistent.In addition, show for twilight sunset, the aobvious simulation display effect of A implements all very complicated, and display effect is all not fully up to expectations.
This programme is based on color blend (Alpha Blending) technology of D3D, radar video is carried out special-effect to be shown, display effect to radar video under the prerequisite of requirement of real time is optimized, so that the display effect of radar video signal is more clear more diversified.
Three summary of the invention
The object of the present invention is to provide a kind of radar video information real-time rendering display packing based on the business computing mechanism rack.The present invention at first carries out coordinate transformation to radar video signal, by coordinate conversion and engineer's scale mapping table moire fringes is produced point and carries out Interpolation compensation, then by the D3D integration technology radar video is carried out twilight sunset and plays up demonstration.When dynamic mapping (such as electrodeless convergent-divergent, stretching, translation etc.) need to be carried out in the aobvious or aobvious interface of A at P, at first use the simple textures coordinate transformation method, the display frame size change over is put in place, slightly show, generate simultaneously the dynamic mapping table, video pictures precision engineer's scale is readjusted calculating, refresh the demonstration image.
Adopt the color blend technology of D3D that radar video information is played up demonstration on the one hand, by increasing the color blend degree, can realize the Blockization demonstration of the aobvious video of radar P, make little target and the general objective consolidated block of P in aobvious, be easy to terminal operation personnel object observing, and judge the state of motion of target; And after reducing degrees of fusion, carry out the moire fringes compensation by interpolation algorithm again, the target detail compensation can realize that the details of radar video accurately shows.Foundation by the dynamic proportion mapping table realizes texture and the video precision engineer's scale inconsistence problems in the electrodeless convergent-divergent of radar video on the other hand.
Realize that technical solution of the present invention is: the implementation platform of technology is Visual Studio 2005, hardware platform is dual core processor, dominant frequency 2.4GHZ, the 4G internal memory, video card GPU is for supporting the chip of DirectX 9.0 and above version fully, operating system is Windows XP.The radar video quantity that accesses simultaneously by network is three ones, and procotol is udp protocol, and the aobvious size of P is the rectangle of 1500*1600.The moire fringes interpolation algorithm is the secondary linear algorithm.Image compensation BLOCK method is the closing operation of mathematical morphology method.
The present invention compared with prior art, its remarkable advantage is: can realize the electrodeless convergent-divergent of radar video, and loss of accuracy not, can not produce moire fringes; Can realize that the twilight sunset that A is aobvious and P is aobvious shows, display effect is near P type fluorescence display; Can carry out the Blockization demonstration to the conspicuous mark of P, be convenient to size and quantity that the personnel that control distinguish target.
Four description of drawings
Fig. 1 is that color cycle is mixed realization twilight sunset effect principle schematic.
Wherein: A, the purpose pixel of be used for mixing, B
0, initial reality figure, B
1, the 1st mixed demonstration figure, B
M-1, the m-1 time mixed demonstration figure, B
m, the m time mixed demonstration figure.
Fig. 2 is electrodeless convergent-divergent implementation method process flow diagram.
Five embodiments
Implementation step of the present invention is:
1. radar video information is carried out coordinate transform, coordinate transform comprises following content:
A) radar video information turns rectangular coordinates transformation to the aobvious polar coordinates of P;
B) the aobvious range value of A is to the altitude conversion of rectangular coordinate;
2. the generation point of moire fringes, the bilinear interpolation that improves are found in the compensation of moire fringes by mapping table; At first according on the range unit range value being carried out the once linear interpolation, on the orientation this point is carried out the once linear interpolation again, the amplitude that moire fringes produces point is the average of twice interpolation.
3. set up the aobvious Surplus Brightness Model of P, by setting suitable mixed function, according to the Alpha value of source pixel and purpose pixel the color of source pixel and purpose pixel is mixed again, then mixed as a result color outputs to and plays up surperficial current pixel position.The Alpha mixed formulation is as follows:
C＝<r，g，b，a> (1)
F＝<fr，fg，fb，fa> (2)
Cf＝<rfr，gfg，bfb，afa> (3)
C’s＝<FUNC>(Csfs，Cdfd) (4)
Wherein, the C in the formula (1) represents the color value of source pixel or purpose pixel; F in the formula (2) represents the hybrid cytokine of source pixel or purpose pixel; Cf in the formula (3) represents source pixel or the purpose pixel color value through obtaining after self immixture; The color value that obtains after C ' expression source pixel in the formula (4) and purpose pixel process self the hybrid cytokine effect passes through mixed function＜FUNC again〉the rear output of effect color value, subscript s and d distribute and represent source pixel and purpose pixel.
Suppose that the moment that sweep trace forwards certain azimuth angle theta 0 to is t0, this moment, after-glow brightness was C ' s0, because persistence characteristic is year old time nonlinearities change (index or logarithmic curve), therefore sweep trace turns over the moment that reaches azimuth angle theta 1 after the Δ θ angle and is designated as t1, the after-glow brightness value C ' s1 that go out in azimuth angle theta 0 this moment then:
C’s1＝C’S0/m (5)
Wherein, m represents the interior circulation mixing number of times of Δ t=t1-t0 time that the surface sweeping line rotates, and the after-glow brightness value of any time after composite type (5), sweep trace turn over is
C‘sn＝C’s0/mn
Come the control display device length of after time by changing the size of mixing number of times m.
The aobvious display effect of A is finished demonstration by Surplus Brightness Model equally.
4. response P shows electrodeless zoom operations, and it realizes schematic diagram 2.At first determine the aobvious size coordinate Vetxt={P1 of former P, P2, P3, P4}
Be designated as without the pole-change recoil
Vetex’＝＝{P1’，P2’，P3’，P4’}
P1, P2, P3, P4, P1 ', P2 ', P3 ', P4 ' they are the point structure objects.
At first carry out the simple textures map function, utilize the interface of viewing hardware HAL layer to carry out convergent-divergent,
VTEXTTRANSFER(Vetxt，Vetxt’)；
Then obtain conversion table according to generating the dynamic accuracy map table, redraw radar video.
Claims (5)
1. show the implementation method of special rendering effect based on the radar video of D3D color blend technology, it mainly realizes comprising following aspect:
S1 response transform operation, the operation of the external units such as corresponding mouse;
S2 carries out the texture coordinate conversion;
S3 carries out interpolation to texture and shows (thick aobvious);
S4 re-starts coordinate transform to the radar video data according to shining table according to precision;
S5 carries out blend of colors, painted demonstration;
Radar P shows electrodeless zoom operations, then will carry out the foundation of video transformation dynamic accuracy table; The compensation of moire fringes: find the generation point of moire fringes by mapping table, the bilinear interpolation that improves; At first according on the range unit range value being carried out the once linear interpolation, on the orientation this point is carried out the once linear interpolation again, the amplitude that moire fringes produces point is the average of twice interpolation; Set up the aobvious Surplus Brightness Model of radar P, by setting suitable mixed function, according to the Alpha value of source pixel and purpose pixel the color of source pixel and purpose pixel is mixed again, then mixed as a result color outputs to and plays up surperficial current pixel position.
2. described method according to claim 1, base is characterised in that: by the mode that GPU plays up, carry out vertex coloring and draw radar video, and directly by HAL layer read-write video memory, the moire fringes interpolation algorithm is the secondary linear algorithm.
3. described method according to claim 1, base is characterised in that: can realize the special display effect of P type fluorescence display, can carry out Block and show, image compensation BLOCK method is the closing operation of mathematical morphology method.
4. described method according to claim 1, base is characterised in that: the real-time electrodeless Zoom display that can realize radar video.
5. emphasis of the present invention is at the foundation of simulation type-P display display effect Surplus Brightness Model, the core technology more protections such as foundation of video transformation dynamic accuracy table.
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| CN103646235A (en) * | 2013-11-25 | 2014-03-19 | 华为技术有限公司 | Method, device and server for target detection in multi-channel video detection system |
| 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 |
| CN107340501A (en) * | 2017-07-02 | 2017-11-10 | 中国航空工业集团公司雷华电子技术研究所 | Radar video method of processing display based on OpenGL ES |
| CN108663662A (en) * | 2018-03-06 | 2018-10-16 | 中国船舶重工集团公司第七二四研究所 | Radar video signal entirety periodic refreshing textures display methods based on GPU |
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| 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 |
| CN104142494B (en) * | 2014-07-17 | 2017-01-25 | 陕西长岭电子科技有限责任公司 | GPU-based video displaying method for rotary antenna radar |
| CN107340501A (en) * | 2017-07-02 | 2017-11-10 | 中国航空工业集团公司雷华电子技术研究所 | Radar video method of processing display based on OpenGL ES |
| CN108663662A (en) * | 2018-03-06 | 2018-10-16 | 中国船舶重工集团公司第七二四研究所 | Radar video signal entirety periodic refreshing textures display methods based on GPU |
| CN110782387A (en) * | 2018-07-30 | 2020-02-11 | 优视科技有限公司 | Image processing method and device, image processor and electronic equipment |
| CN110782387B (en) * | 2018-07-30 | 2023-09-22 | 阿里巴巴（中国）有限公司 | Image processing method and device, image processor and electronic equipment |
| CN109085553A (en) * | 2018-08-08 | 2018-12-25 | 中国航空工业集团公司雷华电子技术研究所 | A kind of quick scanning radar echo background video method for drafting based on texture |
| CN109085553B (en) * | 2018-08-08 | 2023-03-03 | 中国航空工业集团公司雷华电子技术研究所 | Texture-based rapid scanning radar echo background video drawing method |
| CN111221486A (en) * | 2018-11-08 | 2020-06-02 | 财团法人工业技术研究院 | Information display system and information display method |
| CN111221486B (en) * | 2018-11-08 | 2023-04-07 | 财团法人工业技术研究院 | Information display system and information display method |
| CN110060324A (en) * | 2019-03-22 | 2019-07-26 | 北京字节跳动网络技术有限公司 | Image rendering method, device and electronic equipment |
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