CN101825704A - Image display method for synthetic aperture sonar system - Google Patents
Image display method for synthetic aperture sonar system Download PDFInfo
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- CN101825704A CN101825704A CN 201010144552 CN201010144552A CN101825704A CN 101825704 A CN101825704 A CN 101825704A CN 201010144552 CN201010144552 CN 201010144552 CN 201010144552 A CN201010144552 A CN 201010144552A CN 101825704 A CN101825704 A CN 101825704A
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Abstract
The invention relates to an image display method for a synthetic aperture sonar system, which comprises the following steps: setting a cycling storage unit with the length being M, wherein the length M is at least more than or equal to the vertical resolution of a display; taking the maximum value Amax from image data of a batch of seabed targets output by a signal processing system each time at a time, and storing the maximum values Amax into the cycling storage unit in sequence; taking the maximum value Zmax of the cycling data group each time when the cycling data group in the cycling storage unit automatically updates; and quantifying a corresponding gray scale 255 with the Zmax, wherein the value of any point in the image data is Zi, the corresponding gray scale data is Zi/Zmax * 255, and the optimal visual effect can be achieved according to the needed palette configuration. Furthermore, the brightness can be adjusted through adjusting the multiplication coefficient of the maximum value so as to adapt to different needs. The invention adopts the maximum value of the current data on the display for quantification, thereby achieving the proper image display effect.
Description
Technical field
The invention belongs to synthetic aperture sonar image signal process field, particularly a kind of method for displaying image that is used for the synthetic aperture sonar system.
Background technology
The synthetic aperture imaging sonar is a kind of acoustics imaging device, it shines testees with an acoustics " antenna " at a plurality of position emission sound waves, and receive the sound wave reflect, form virtual big " antenna " by method for processing signals, thus the imaging effect can obtain resolution and be higher than use one " antenna " far away the time.It is mainly used in seabed mapping, operations such as object salvaging.It receives raw data by signal processing system and handles, and obtains the view data of sub-sea floor targets thing etc., is presented on the display screen, and existing display packing all is to roll downwards in " waterfall type " mode, and new view data is presented at the display screen upper end.
View data is quantized into the gray level that used computer display card is supported, can support 8 color sign indicating numbers as existing big multi-display card, they can show simultaneously that 28 powers are 256 kinds of colors, the requirement at least when 256 look patterns are considered to carry out the color programs design now.Therefore, show that the maximal value correspondence of current screen image high grade grey level 255 for the synthetic aperture sonar picture.Calculate the maximal value of current screen view data, need compare all images data, be that 1024 * 768 display shows for example for a resolution, just need compare 1024*768 view data, try to achieve maximal value, this operand is very big with respect to the real-time rolling of image, can't calculate at all.
Existing systems all adopts the maximal value of parts of images data, shows in conjunction with the method for manual adjustments, shows sometimes that therefore the sensation image is very bright, feels that sometimes image is very dark, carries out manual adjustments always, is difficult to reach the best visual effect.
Summary of the invention
To the objective of the invention is, in order addressing the above problem, thereby to propose a kind of method for displaying image that is used for the synthetic aperture sonar system.
For achieving the above object, the invention provides a kind of method for displaying image that is used for the synthetic aperture sonar system, as shown in Figure 1, its step comprises:
(1) the circulation storage unit that a length is set is M, this length M is at least more than or equal to the display screen longitudinal frame;
(2) view data of a collection of sub-sea floor targets thing of the every output of signal processing system, the maximal value of getting in this batch view data is Amax, and deposits the circulation storage unit successively in;
(3) the circulation array in the circulation storage unit is every to be upgraded once automatically, gets the maximal value Zmax of the array that once circulates;
(4) utilize Zmax corresponding grey scale level 255 to quantize, the arbitrary point value in the view data is Zi, and corresponding gray-scale data is: Zi/Zmax * 255, palette configuration as required just can reach the best visual effect.
As a kind of improvement of technique scheme, can also further the adjusting button be set and carry out the light and shade adjusting, to adapt to different needs according to peaked multiplication coefficient.The span of this multiplication coefficient is: 0.5-1.0.
The invention has the advantages that: the method for displaying image that is used for the synthetic aperture sonar system of the present invention, reduce to ask the method for image maximum operation amount, make that be presented at data on the display screen all is that maximal value with current screen data quantizes at every turn, thereby make that the image display effect light and shade is moderate, and, peaked multiplication coefficient is regulated at regulating needs.
Description of drawings
Fig. 1 process flow diagram that is used for the method for displaying image of synthetic aperture sonar system of the present invention;
The synoptic diagram of the circulation storage unit that Fig. 2 the present invention proposes.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
The step that the method for displaying image that is used for the synthetic aperture sonar system that the present invention proposes comprises is as shown in Figure 1:
(1) longitudinal frame of supposing the display screen that uses is M, the circulation storage space that to open up a length be M for this reason.
(2) this circulation storage space is read and write the end of storage space as shown in Figure 2, automatically the initiating terminal of storage space is read and write.
(3) suppose the to newly arrive maximal value of the capable view data of m is Amax, writes in this circulation storage space.
(4) as shown in Figure 2, each new maximal value that receives view data writes in this circulation storage space according to this, if there are data in the current location of storage space, then new data overrides old data.
(5) obtain the maximal value Zmax of these storage space data.
(6) quantize with 255 of Zmax corresponding grey scale level.
(7) according to peaked multiplication coefficient the adjusting button is set, carries out light and shade and regulate.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. method for displaying image that is used for the synthetic aperture sonar system, its step comprises:
1) the circulation storage unit that a length is set is M, this length M is at least more than or equal to the display screen longitudinal frame;
2) view data of a collection of sub-sea floor targets thing of the every output of signal processing system is got the maximal value Amax in this batch view data, and deposits the circulation storage unit successively in;
3) the circulation array in the circulation storage unit is every to be upgraded once automatically, gets the maximal value Zmax of the array that once circulates;
4) utilize Zmax corresponding grey scale level 255 to quantize, the arbitrary point value in the view data is Zi, and corresponding gray-scale data is: Zi/Zmax * 255, palette configuration as required just can reach the best visual effect.
2. the method for displaying image that is used for the synthetic aperture sonar system according to claim 1 is characterized in that, also further comprises: according to peaked multiplication coefficient the adjusting button is set and carries out the light and shade adjusting.
3. the method for displaying image that is used for the synthetic aperture sonar system according to claim 2 is characterized in that the span of described multiplication coefficient is: 0.5～1.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144552 CN101825704B (en) | 2009-12-08 | 2010-04-09 | Image display method for synthetic aperture sonar system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910242259.6 | 2009-12-08 | ||
| CN200910242259 | 2009-12-08 | ||
| CN 201010144552 CN101825704B (en) | 2009-12-08 | 2010-04-09 | Image display method for synthetic aperture sonar system |
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| CN101825704A true CN101825704A (en) | 2010-09-08 |
| CN101825704B CN101825704B (en) | 2012-12-12 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5155706A (en) * | 1991-10-10 | 1992-10-13 | Westinghouse Electric Corp. | Automatic feature detection and side scan sonar overlap navigation via sonar image matching |
| US5699318A (en) * | 1996-07-25 | 1997-12-16 | Northrop Grumman Corporation | Topographic composition sonar map |
| US6421300B1 (en) * | 1997-10-06 | 2002-07-16 | Delegation Generale Pour L'armement | Method for screen display of a multidimensional data field, particularly for data supplied by a passive sonar, and system for implementing said method |
| CN1731212A (en) * | 2005-08-25 | 2006-02-08 | 中国船舶重工集团公司第七一五研究所 | A self-focusing processing method for synthetic aperture sonar imaging |
| CN101236249A (en) * | 2008-03-03 | 2008-08-06 | 哈尔滨工程大学 | Signal treating system for lens sonar |
| CN101359050A (en) * | 2008-08-27 | 2009-02-04 | 哈尔滨工程大学 | Sonar image processing board |
-
2010
- 2010-04-09 CN CN 201010144552 patent/CN101825704B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5155706A (en) * | 1991-10-10 | 1992-10-13 | Westinghouse Electric Corp. | Automatic feature detection and side scan sonar overlap navigation via sonar image matching |
| US5699318A (en) * | 1996-07-25 | 1997-12-16 | Northrop Grumman Corporation | Topographic composition sonar map |
| US6421300B1 (en) * | 1997-10-06 | 2002-07-16 | Delegation Generale Pour L'armement | Method for screen display of a multidimensional data field, particularly for data supplied by a passive sonar, and system for implementing said method |
| CN1731212A (en) * | 2005-08-25 | 2006-02-08 | 中国船舶重工集团公司第七一五研究所 | A self-focusing processing method for synthetic aperture sonar imaging |
| CN101236249A (en) * | 2008-03-03 | 2008-08-06 | 哈尔滨工程大学 | Signal treating system for lens sonar |
| CN101359050A (en) * | 2008-08-27 | 2009-02-04 | 哈尔滨工程大学 | Sonar image processing board |
Non-Patent Citations (3)
| Title |
|---|
| 《声学技术》 20061031 李袆； 黄勇； 黄海宁； 刘纪元； 孙超 合成孔径声纳干涉相位图噪声抑制方法分析 第25卷, 第5期 2 * |
| 《微机发展》 20040229 刘卓夫； 桑恩方 基于主灰度的声纳图像识别 第14卷, 第2期 2 * |
| 《系统仿真学报》 20050731 刘维； 刘纪元； 黄海宁； 张春华 声纳图像伪彩色处理的调色板连续色编码方法 第17卷, 第7期 2 * |
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