CN1381708A - 3D observation and survey of ground surface features by digital orthography - Google Patents
3D observation and survey of ground surface features by digital orthography Download PDFInfo
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- CN1381708A CN1381708A CN 02121091 CN02121091A CN1381708A CN 1381708 A CN1381708 A CN 1381708A CN 02121091 CN02121091 CN 02121091 CN 02121091 A CN02121091 A CN 02121091A CN 1381708 A CN1381708 A CN 1381708A
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Abstract
A 3D observation and survey method for the ground object based on the utilization of digital orthographic image is disclosed. A digital differential correct technique is used to resample the left and right aerophotos for forming the 3D ground object. After digital inlaying, the left and right digital orthographic images of a single picture are obtained, and have less parallax. With simple method and tool, the ground object features on the said two images can be observed, explained and surveyed.
Description
The present invention relates to utilize numeral (landform) orthography to carry out the stereoscopy and the mapping of atural object key element.
At present, the method that adopts the digital photogrammetry technology that the atural object key element is observed with mapping has two kinds: the one, and field operation is transferred to paint and is added digital photogrammetric work station stereoscopy and mapping; No matter be in outer earlier (the field operation accent is painted) back (interior industry mapping), still earlier interior (interior industry is declared survey) back outer (field operation is verified and mended accent) all will make up stereoscopic model by left and right photo on digital photogrammetric work station, and three-dimensional limit mapping is seen on artificial limit.This method adopts original aviation image data source can guarantee product quality, but cost is big, and work efficiency is low, and the production cycle is long, and the cost height, and ten thousand yuan of every the homemade valency Renminbi of digital photogrammetric work station 9-11 have limited production scale.The 2nd, utilize numeral (landform) orthophotoquad to declare as the manual observation of carrying out atural object under the state and paint and mapping at list; This method cost is low, can bring to field work, and increasing manpower can expand the scale of production, but single as operation under the observation state, the positional precision of atural object is difficult to guarantee, directly influences product quality.
The purpose of this invention is to provide a kind of simple and effectively, not only utilized digital orthoimage but also realized method stereoscopy of atural object key element and mapping.
The atural object stereoscopy of digital orthoimage of the present invention and the digital orthoimage that mapping is adopted obtain by the following method:
At first, on the basis that makes up relief model, simultaneously left and right two the airphoto images that constitute stereoscopic model are carried out differential rectify, obtain left and right two (landform) orthographies in the single model scope; These two images have been eliminated the photo caused image point displacement of tilting of topographic relief, when photography, promptly these two images are " zero is three-dimensional " for topographic relief, but the left and right parallax of atural object images such as house, trees, high-tension line tower, viaduct more still exists, and that is to say that the relief effect of atural object still exists.
Left sheet in the same figure amplitude range and right sheet orthography are carried out digital mosaic respectively, thereby obtain " left side " orthography and " right side " orthography of same width of cloth figure; Owing to be orthography, there have not been situations such as vertical parallax, engineer's scale be inconsistent between " left side ", " right side " image, therefore can adopt simple stereoscopy device to observe; Owing to be orthography, its geometric position of the formed three-dimensional atural object of left and right pairing has been in the tram in the earth coordinates, can directly obtain its Gauss projection planimetric rectangular coordinates (X, Y).Can carry out stereoscopy to the atural object key element on left and right two numerals (landform) orthophotoquad by means of stereoscopy method (closing method etc.) commonly used as mirror stereoscope method, complementary color method, polarized light approach or sudden strain of a muscle.
Because what this method adopted is that so method is easy, cost is low to the observation and the mapping of numeral (landform) orthography; And utilized the stereoeffect of left and right atural object image, thus the key element accurate positioning, and help the interpretation of atural object qualitatively, guaranteed product quality; Can under interior industry or the simple and easy condition of field operation, directly realize stereoscopy and indoor and field integration mapping simultaneously, help shortening the production cycle, improve overall economic efficiency the atural object key element.
The invention will be further described below in conjunction with accompanying drawing and specific implementation method.
Accompanying drawing is the atural object stereoscopy of digital orthoimage and the process flow diagram of mapping.
Be core of the present invention in the frame of broken lines scope among the figure, frame is outward the existing data source of being utilized.
Utilize digital aerotriangulation to encrypt achievement and digital elevation model, left and right scan-image of aviation stereogram carried out differential rectify, obtain left and right numeral (landform) orthography of single model.
Respectively left and right orthography is carried out digital mosaic, obtain left and right numeral (landform) orthography of same map sheet.
By left and right numeral (landform) orthography is carried out stereoscopy, the atural object key element is carried out mapping and graphics edition under the stereoscopic-state in conjunction with field investigation.
Import existing level line, spot elevation (can or pass through the acquisition of topomap sweep vector) geomorphology information, form complete digital line layout figure by the stereoscopic model actual measurement.
Claims (1)
1, a kind of left and right two numerals (landform) orthophotoquad that utilizes stereopsis to generate carries out the method for stereoscopy and mapping to atural object; Can carry out stereoscopy and mapping to airphoto image, can carry out atural object to individual numeral (landform) orthophotoquad after differential rectify and declare and paint its planimetric position coordinate of direct acquisition with horizontal parallax difference; Technical characterictic of the present invention is that left and right two the airphoto images that constitute stereoscopic model are carried out numerical differentiation simultaneously to be corrected, obtain left and right two numerals (landform) orthography in the single model scope, again the single model image in the same width of cloth figure is carried out digital mosaic respectively, thereby obtain left and right numeral (landform) orthophotoquad, utilize wherein that still there is horizontal parallax difference in the image of atural object, left and right numeral (landform) orthophotoquad is carried out the stereoscopy of atural object and direct mapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121091 CN1381708A (en) | 2002-05-31 | 2002-05-31 | 3D observation and survey of ground surface features by digital orthography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121091 CN1381708A (en) | 2002-05-31 | 2002-05-31 | 3D observation and survey of ground surface features by digital orthography |
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| Publication Number | Publication Date |
|---|---|
| CN1381708A true CN1381708A (en) | 2002-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02121091 Pending CN1381708A (en) | 2002-05-31 | 2002-05-31 | 3D observation and survey of ground surface features by digital orthography |
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| CN (1) | CN1381708A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308657C (en) * | 2002-11-28 | 2007-04-04 | 武汉大学 | Method for measuring formation of seamless space stereomodel |
| CN100380097C (en) * | 2003-10-14 | 2008-04-09 | 武汉大学 | Seamless stereomodel high-precision measuring method based on digital normal incidence image and stereo auxiliary image |
| CN100395779C (en) * | 2003-10-14 | 2008-06-18 | 武汉大学 | Measurable seamless space stereomodel gereration method based on digital stereo normal incidence image mosaic |
| CN1959343B (en) * | 2005-10-31 | 2011-02-16 | 北京师范大学 | Airborne height measurement technique of multiple angles imaging |
| CN104180794A (en) * | 2014-09-02 | 2014-12-03 | 西安煤航信息产业有限公司 | Method for treating texture distortion area of digital orthoimage |
| CN104457710A (en) * | 2014-12-15 | 2015-03-25 | 重庆市勘测院 | Digital photogrammetry method based on non-metric digital camera |
-
2002
- 2002-05-31 CN CN 02121091 patent/CN1381708A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308657C (en) * | 2002-11-28 | 2007-04-04 | 武汉大学 | Method for measuring formation of seamless space stereomodel |
| CN100380097C (en) * | 2003-10-14 | 2008-04-09 | 武汉大学 | Seamless stereomodel high-precision measuring method based on digital normal incidence image and stereo auxiliary image |
| CN100395779C (en) * | 2003-10-14 | 2008-06-18 | 武汉大学 | Measurable seamless space stereomodel gereration method based on digital stereo normal incidence image mosaic |
| CN1959343B (en) * | 2005-10-31 | 2011-02-16 | 北京师范大学 | Airborne height measurement technique of multiple angles imaging |
| CN104180794A (en) * | 2014-09-02 | 2014-12-03 | 西安煤航信息产业有限公司 | Method for treating texture distortion area of digital orthoimage |
| CN104457710A (en) * | 2014-12-15 | 2015-03-25 | 重庆市勘测院 | Digital photogrammetry method based on non-metric digital camera |
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