CN102538770B - Low altitude photography image control point arranging method - Google Patents
Low altitude photography image control point arranging method Download PDFInfo
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- CN102538770B CN102538770B CN201210013804.6A CN201210013804A CN102538770B CN 102538770 B CN102538770 B CN 102538770B CN 201210013804 A CN201210013804 A CN 201210013804A CN 102538770 B CN102538770 B CN 102538770B
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Abstract
The invention relates to the technical field of electrical power engineering survey, belongs to the field of surveying and mapping and particularly relates to a low altitude photography image control point arranging method. According to an aerial photographic regional map, a mark distribution model is established and control mark points are arranged in an aerial photographic regional network; plane control points are arranged around an aerial photographic region; the length of a photographic baseline is b; in the process of encrypting point positions under high precision, the span of the heading spacing is in the range of 6 to 8b and the span of the lateral spacing is 4b; a pair of image control points are respectively arranged at both ends of each route; vertical control points are arranged into a lock shape; the spans of the vertical control points along the lateral spacing are 4b and the spans of the vertical control points along the heading spacing is 6 to 8b; and when plane point positions are encrypted under high precision, the vertical control points are arranged. According to the invention, the aerial triangulation and mapping accuracy of the photogrammetric office work is improved, the surveying and mapping production efficiency is improved, the points are flexibly distributed under the condition that the requirement on the precision of the photogrammetric office work is met; the number of the arranged field image control points is reduced; and the low altitude photography image control point arranging method is suitable for low altitude photographic surveying in any land area.
Description
Technical field
The present invention relates to Electric Power Engineering Reconnaissance technical field, belong to Surveying Science and Technology field, be specifically related to a kind of low altitude photography image control point arranging method.
Background technology
At present, the digital photography of unmanned plane low latitude, film size is little, photo is many, photo control point is laid and is all performed according to current code requirement, its distribution method stings on the spot according to image feature point put and measure position coordinate after flight, course line head and the tail a pair photo control point should perpendicular to course line, this method operating difficulties, can not freely lay, and it is intensive for vegetation, wasteland, deserts etc. are without obvious characteristic point area, thorn point is very difficult, sometimes cannot sting a little, even if can unique point be found, judge image particular location also very out of true, thus photo control point coordinate precision is affected, thus reduce the precision of photogrammetric office work coordinate and elevation.
Summary of the invention
The object of this invention is to provide a kind of can layouting in area with a varied topography, improve the low altitude photography image control point arranging method of photo control point coordinate precision and photogrammetric office work coordinate and vertical accuracy.
For achieving the above object, a kind of low altitude photography image control point arranging method of the present invention's design, according to territory, air cover map, formulate cloth mark model and lay in the net of territory, air cover and control monumented point, planimetric control point is laid in the surrounding in territory, air cover, photographic base length is b, during high precision pass point position, course spacing span is 6 ~ 8b, side is 4b to spacing span, the each cloth in two ends, every bar course line a pair photo control point, vertical control point cloth is set as lock shape, vertical control point is 4b along side to spacing, be 6 ~ 8b along course spacing span, vertical control point is laid while high precision encryption planar point position.
In technique scheme, when laying suitable vertical control point, sidelapping lower than 40% time, a pair vertical control point is laid at two ends, every bar course line.
In technique scheme, laying and controlling monumented point employing diameter is the circle marker of 90cm, and stamps timber in the center of circle, and colored red paint is to identify.
In technique scheme, reference mark adopts real-time dynamic GPS to measure its coordinate.
In technique scheme, Yu Wang corner, air cover control points layout becomes some group.
In technique scheme, the head and the tail in territory, air cover respectively increase a course line, each two or three models of increase about territory, air cover.
The present invention lays picture control point before adopting flight, make terrestrial reference in advance, accurately can measure coordinate and the elevation at terrestrial reference center, interior industry screen can accurately judge image center position, photo control point precision significantly improves, and not by the impact of territorial environment, surface mark can be laid in any ground.The present invention adopts intensive periphery cloth point mode, improve field photo control point and lay degree of freedom, reduce field photogrammetric control point surveying, improve field photo control point coordinate and vertical accuracy, improve photogrammetric office work aerotriangulation and plotting accuracy, improve surveying production efficiency, when meeting photogrammetric office work precision, layout flexibly, reduce field photo control point and lay quantity, be suitable for any land area low altitude photogrammetry.
Accompanying drawing explanation
Fig. 1 is that low latitude of the present invention photography photo control point lays schematic diagram;
In figure, 1, planimetric control point; 2, vertical control point; 3, some group.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Low altitude photography image control point arranging method is according to territory, air cover map, formulate cloth mark model and lay in the net of territory, air cover and control monumented point, consult shown in Fig. 1, planimetric control point 1 is laid in the surrounding in territory, air cover, and photographic base length is b, during high precision pass point position, course spacing span is 6 ~ 8b, side is 4b to spacing span, each cloth in two ends, every bar course line a pair photo control point, and vertical control point 2 cloth is set as lock shape, vertical control point is 4b along side to spacing, is 6 ~ 8b along course spacing span.
Terrestrial reference is laid before flight, according to territory, air cover map, cloth mark scheme is formulated in the region needing boat to take the photograph, lay in advance and control monumented point, controlling monumented point adopts diameter to be the circle marker of 90cm, and stamp timber in the center of circle, colored red paint, to identify, controls pricking method point, turning point error to reduce aerophotogrammetric field work.
Reference mark adopts real-time dynamic GPS to measure its coordinate, actual job carries out with control points layout mark simultaneously, in survey distributing GPS base station, district, together with GPS-RTK rover station is laid with mark, after having laid reference mark mark, GPS-RTK is adopted to measure its three-dimensional coordinate immediately.
Precision the weakest point due to block aerial triangulation is positioned at the surrounding in region, and not in the central authorities in region, that is for region aerotriangulation, intra-zone precision is high and even, precision weak link is in the surrounding in region, therefore, adopt intensive periphery cloth point mode, planimetric control point is laid in the surrounding in region.
Its course span of the appropriate to the occasion employing in high precision pass point position is i=6 ~ 8b, b is photographic base length, side is 4b to spacing span, the close periphery cloth point mode of each cloth in two ends, every bar course line a pair photo control point, region is larger stronger, and plane control dot spacing is depending on mapping precision requirement and area size, and vertical control point answers cloth to become lock shape, vertical control point is 4b along side to spacing, is 6 ~ 8b along course spacing.When high precision encryption planar point position, still need to lay suitable vertical control point, have an impact to planimetric coordinates to ensure that the distortion of model is unlikely, if when sidelapping is smaller, or lower than 40%, two ends, every bar course line are laid with a pair vertical control point.
In order to improve the reliability of regional network, reference mark cloth becomes some group, particularly regional network corner control points layout becomes some group 3 (shown in accompanying drawings 1), improve the precision in whole region, when not increasing reference mark, by expanding adjustment regional extent, territory, air cover head and the tail are each increases a course line, left and right is each increases by three models, to improve encryption precision and reliability.
The present invention, when meeting photogrammetric office work precision, layouts flexibly, reduces field photo control point and lays quantity, be suitable for any land area low altitude photogrammetry.
The content be not described in detail in this instructions belongs to the known prior art of professional and technical personnel in the field.
Claims (3)
1. a low altitude photography image control point arranging method, it is characterized in that: according to territory, air cover map, in territory, air cover, formulate cloth mark model and lay and control monumented point, adopt intensive periphery cloth point mode, planimetric control point is laid in the surrounding in territory, air cover, corner, region control points layout becomes some group, when not increasing reference mark, by expanding adjustment regional extent, territory, air cover head and the tail are each increases a course line, left and right is each increases by three models, to improve encryption precision and reliability, photographic base length is b, course spacing span is 6b ~ 8b, side is 4b to spacing span, the each cloth in two ends, every bar course line a pair photo control point, wherein, vertical control point cloth is set as lock shape, and vertical control point is 4b along side to spacing, is 6b ~ 8b along course spacing span, vertical control point is laid while high precision encryption planar point position, if sidelapping lower than 40% time, two ends, every bar course line are laid with a pair vertical control point.
2. low altitude photography image control point arranging method according to claim 1, is characterized in that: laying and controlling monumented point employing diameter is the circle marker of 90cm, and stamps timber in the center of circle, and colored red paint is to identify.
3. low altitude photography image control point arranging method according to claim 1, is characterized in that: reference mark adopts real-time dynamic GPS to measure its coordinate and elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210013804.6A CN102538770B (en) | 2012-01-17 | 2012-01-17 | Low altitude photography image control point arranging method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210013804.6A CN102538770B (en) | 2012-01-17 | 2012-01-17 | Low altitude photography image control point arranging method |
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| CN102538770A CN102538770A (en) | 2012-07-04 |
| CN102538770B true CN102538770B (en) | 2015-05-06 |
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| CN103759720B (en) * | 2013-11-20 | 2016-04-13 | 中国电建集团西北勘测设计研究院有限公司 | Aerophotogrammetric field work digitizing thorn point methods |
| CN104406574B (en) * | 2014-12-01 | 2016-09-14 | 中国能源建设集团山西省电力勘测设计院有限公司 | The photogrammetric field of unmanned plane is put down high photo control point and is laid target |
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| CN108151710B (en) * | 2017-12-27 | 2019-11-19 | 山东大学 | A kind of unmanned plane photo control point identity device and application method |
| CN108489466B (en) * | 2018-03-07 | 2019-10-18 | 华北水利水电大学 | A kind of mountain area aerial survey unmanned plane photo control point coordinate measuring method |
| CN108458693A (en) * | 2018-03-07 | 2018-08-28 | 华北水利水电大学 | A kind of aerial survey unmanned plane photo control point lays target and its distribution method |
| CN109443365B (en) * | 2018-12-19 | 2023-01-31 | 中国电建集团中南勘测设计研究院有限公司 | GNSS (global navigation satellite system) assisted sparse image control layout method and system for low-altitude remote sensing of unmanned aerial vehicle |
| CN111024052A (en) * | 2019-05-20 | 2020-04-17 | 安徽省中功立业建设工程有限责任公司 | Mapping method based on municipal engineering |
| CN110186432A (en) * | 2019-07-08 | 2019-08-30 | 中国电建集团成都勘测设计研究院有限公司 | Ground control point installation aiding device for earth's surface deformation evolution |
| CN112100715A (en) * | 2020-08-20 | 2020-12-18 | 中国建筑第八工程局有限公司 | Three-dimensional oblique photography technology-based earthwork optimization method and system |
| CN112268541B (en) * | 2020-10-16 | 2022-04-15 | 中国有色金属长沙勘察设计研究院有限公司 | Three-dimensional space detection method |
| CN114184172A (en) * | 2021-10-22 | 2022-03-15 | 中石化石油工程技术服务有限公司 | Low-altitude aerial survey image control point layout method |
| CN114199204B (en) * | 2021-11-08 | 2024-03-15 | 呼和浩特市自然资源规划设计研究有限公司 | Topographic map mapping method for unmanned aerial vehicle low-altitude photography |
| CN114705166B (en) * | 2022-03-31 | 2023-05-16 | 中国科学院空天信息创新研究院 | Control point layout method, device, equipment and medium for large area array camera |
| CN116205975B (en) * | 2023-02-01 | 2023-09-19 | 广东国地规划科技股份有限公司 | Image control point data acquisition method and unmanned aerial vehicle mapping method |
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Address after: 430071 Wuchang District, Hubei, South Central Road No. two, No. 12, No. Applicant after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Address before: 430071 No. 668 Democratic Road, Wuchang District, Hubei, Wuhan (Central South Electric Power Design Institute) Applicant before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor |
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