CN102735218A - Making method for grotto digital line graph based on digital close-range photogrammetry - Google Patents
Making method for grotto digital line graph based on digital close-range photogrammetry Download PDFInfo
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- CN102735218A CN102735218A CN2012102014156A CN201210201415A CN102735218A CN 102735218 A CN102735218 A CN 102735218A CN 2012102014156 A CN2012102014156 A CN 2012102014156A CN 201210201415 A CN201210201415 A CN 201210201415A CN 102735218 A CN102735218 A CN 102735218A
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Abstract
The present invention provides a making method for a grotto digital line graph based on digital close-range photogrammetry. The method comprises the following steps: 1, acquiring field data: comprising image acquisition and field work control point coordinate measuring; 2, organizing the images: importing image data and camera parameters, inputting the strip parameter, and carrying out strip grouping on the images; 3, establishing a grotto digital model: carrying out aerial triangulation matching, free network bundle adjustment and encryption matching to generate an accurate grotto digital model; 4, generating an orthophoto image: carrying out accurate correcting, inlaying and merging with a software according to the digital model generated in the step 3 to generate an orthophoto image of the subject to be detected; and 5, drawing a digital line graph: drawing a digital line graph having the accurate geometric position relationship based on the orthophoto image according to the requirements of cultural relics department. The method of the present invention has characteristics of low working environment requirements, no damage on the grotto, high precision, and rapid speed.
Description
Technical field
The present invention relates to field of cultural relic digitalization and close-range photogrammetry field.Be specially a kind of rock cave numeral line layout figure method for making based on digital close range photogrammetry.
Technical background
The rock cave line layout figure has vital role in the archaeology report, require physical dimension entirely true.The picture that classic method is taken with grid manual drawing or ordinary camera has distortion, and is time-consuming, distortion, and efficient is extremely low, is unfavorable for that document files and management.
Summary of the invention
The object of the invention is in order to obtain the original appearance of complete faithful to rock cave, and has the flat profile in elevation of digital vector of accurate geometry site.The three-dimensional coordinate of any point all can be known on the lines in this figure, and a kind of rock cave numeral line layout figure method for making based on digital close range photogrammetry is provided.It provide accurate and reliable drawing and data not only can for historical relic's protection and reconstruction, guarantees the history of being loyal to of heritage archive, and is very beneficial for the digital document form and files and manage, thus the overall digital management of realization rock cave.Be one of the road that must go of historical relic's protection and state-of-the-art ladder of management of science.
For realizing above-mentioned purpose, technical scheme of the present invention is:
. the rock cave numeral line layout figure method for making based on digital close range photogrammetry may further comprise the steps:
Step 1; Field data is obtained: comprise that image obtains and field operation reference mark measurement of coordinates, image obtains and adopts the image that obtains the certain degree of overlapping of a series of assurances through the single anti-digital camera of demarcating of high resolving power (obtaining the camera element of orientation and photogrammetric distortion) on request; Field operation reference mark measurement of coordinates selects unique point to do the reference mark, even cloth, with no mound mirror total powerstation to the three-dimensional coordinate of object measurement more than 1 as reference mark and interface.
Step 2, imaged tissue: after importing image data and camera parameter data, input air strips number carries out air strips to image and divides into groups.
Step 3: the rock cave digital model is set up: adopt latest digital close-range photogrammetry software Lensphoto software that image is carried out aftertreatment, through empty three couplings, the free net bundle adjustment is encrypted coupling, generates accurate object digital model.This digital model is different from the digital-to-analogue on the universal, and it is not that interpolation method obtains the approximate value digital-to-analogue but accurate image matching method acquisition reliable value digital model.
Step 4: orthography generates: on the digital model basis that step 3 generates, accurately correct the orthography that mosaic splicing generates measured object through software.It is different from the image of central projection, no matter be center or edge, its engineer's scale everywhere all is the same deformation that do not have.Simultaneously because to have eliminated lens distortion twice when camera calibration and during the image aftertreatment poor, the orthography of generation does not have lens distortion poor yet.
Step 5: digital line layout figure is drawn: require the contrast orthography to draw the digital line layout figure with precise geometrical position relation according to historical relic department.
In the digital line layout figure method for making of the present invention, adopted a kind of photogrammetric survey method of digital grottoes, may further comprise the steps:
Step 1, the employing camera carries out the parallel multiple-baseline photography, and the station is taken the photograph in unified survey district or at least 3 of testee employings; During shooting, camera is taken over against subject from left to right, and each is taken the photograph the station and only takes an image; Adjacent taking the photograph between the image of station guarantees the degree of overlapping more than 80%; A series of images of taking from left to right on the same horizontal line constitute air strips, and each air strips alignment also guarantees 80% degree of overlapping between many air strips;
Step 2 to using the image of camera by above-mentioned style of shooting shooting gained, is handled according to the interior industry processing mode of the many baselines photographies of rotation, obtains the precision measurement outcome data.
In the digital line layout figure method for making of the present invention; Adopted a kind of filming apparatus of digital grottoes; This device comprises support bar and The Cloud Terrace; Described The Cloud Terrace is installed on the described support bar, and support bar has more than 1, fixes for demountable structure between support bar and the support bar and between support bar and the The Cloud Terrace.
With traditional grid manual drawing method, the present invention has the following advantages:
1, accomplish precise figures archaeologies schema mapping fast, from the Freehandhand-drawing figure high precision 1:1 polar plot by now of fixed proportion slowly, not only the drawing of different proportion chi can obtain at any time, and can conveniently get into other civilian insurance systems.
2, digital material is more convenient for preserving and management than the paper document of grid manual drawing.
3, every has the accurate three-dimensional volume coordinate and is convenient to the historical relic reparation.
Description of drawings
Fig. 1 is the process flow diagram of embodiments of the invention
Fig. 2 is that field operation of the present invention is taken synoptic diagram
Fig. 3 handles synoptic diagram for industry in the present invention, and it is 3 air strips from left to right, and degree of overlapping 80% between air strips, and parallel from top to bottom photography is taken 6 images as 1 air strips;
Fig. 4 is the photograph structural representation of filming apparatus of usefulness of the present invention
Fig. 5 is the supporting bar structure synoptic diagram in the filming apparatus shown in Figure 4
Among the figure: the 1-support bar, the 2-The Cloud Terrace, the 3-screw, 4-installs the screw port of camera.
Embodiment
The present invention is described further through embodiment below in conjunction with accompanying drawing.
Rock cave numeral line layout figure method for making based on digital close range photogrammetry of the present invention, its method step is:
1. field data collection:
Investigate floor, make shooting distance, the spot for photography.Select suitable camera and camera lens, design reference mark distribution plan.
According to the rock cave field condition, use the filming apparatus (see figure 4) that camera fixing is carried out parallel photography at differing heights to rock cave.The photographing request photo is clear.Object must take more than 2/3rds of the phase width of cloth.Degree of overlapping is 80% between two images up and down, about between two air strips degree of overlapping be 80%.(seeing accompanying drawing 2)
The three-dimensional coordinate that the field operation control point survey is measured some points (selecting unique point to do the reference mark, even cloth) to object with no prism total powerstation is as reference mark and interface.
2. imaged tissue: after importing image data and camera parameter data, the image of every parallel photography is as air strips, and input air strips number carries out air strips groupings (accompanying drawing 3) to image.
3. the rock cave digital model is set up: the imaged tissue in reference mark three-dimensional coordinate that obtains in the step 1 and the step 2 is input among the close-range photogrammetry software Lensphoto through empty three couplings; The free net bundle adjustment; Encrypt coupling, generate accurate object digital model.
4. orthography generates: on the digital model basis that step 3 generates, accurately correct the orthography that mosaic splicing generates measured object through software.
5. digital line layout figure is drawn: require the contrast orthography to draw the digital line with precise geometrical position relation according to historical relic department and draw.
Claims (3)
1. based on the rock cave numeral line layout figure method for making of digital close range photogrammetry, it is characterized in that: may further comprise the steps:
Step 1, field data is obtained: comprise that image obtains and field operation reference mark measurement of coordinates, image obtains and adopts the image that obtains the certain degree of overlapping of a series of assurances through the single anti-digital camera of the high resolving power of demarcating on request; Field operation reference mark measurement of coordinates selects unique point to do the reference mark, even cloth, with no mound mirror total powerstation to the three-dimensional coordinate of object measurement more than 1 as reference mark and interface;
Step 2, imaged tissue: after importing image data and camera parameter data, input air strips number carries out air strips to image and divides into groups;
Step 3: the rock cave digital model is set up: adopt latest digital close-range photogrammetry software Lensphoto software that image is carried out aftertreatment, through empty three couplings, the free net bundle adjustment is encrypted coupling, generates accurate object digital model;
Step 4: orthography generates: on the digital model basis that step 3 generates, accurately correct the orthography that mosaic splicing generates measured object through software;
Step 5: digital line layout figure is drawn: require the contrast orthography to draw the digital line layout figure with precise geometrical position relation according to historical relic department.
2. the rock cave numeral line layout figure method for making based on digital close range photogrammetry according to claim 1 is characterized in that: adopted a kind of photogrammetric survey method of digital grottoes, may further comprise the steps:
Step 1: the employing camera carries out the parallel multiple-baseline photography, the station is taken the photograph in unified survey district or at least 3 of testee employings, during shooting; Camera is taken over against subject from left to right; Each is taken the photograph the station and only takes an image, and adjacent taking the photograph between the image of station guarantees the degree of overlapping more than 80%, and a series of images of taking from left to right on the same horizontal line constitute air strips; Each air strips alignment also guarantees 80% degree of overlapping between many air strips;
Step 2: to using the image of camera, handle, obtain the precision measurement outcome data according to the interior industry processing mode of the many baselines photographies of rotation by above-mentioned style of shooting shooting gained.
3. the rock cave numeral line layout figure method for making based on digital close range photogrammetry according to claim 2; It is characterized in that: the filming apparatus that has adopted a kind of digital grottoes; This device comprises support bar (1) and The Cloud Terrace (2); Described The Cloud Terrace is installed on the described support bar, and support bar has more than 1, fixes for demountable structure between support bar and the support bar and between support bar and the The Cloud Terrace.
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Cited By (7)
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| CN103363958A (en) * | 2013-07-05 | 2013-10-23 | 武汉华宇世纪科技发展有限公司 | Digital-close-range-photogrammetry-based drawing method of street and house elevations |
| CN104457710A (en) * | 2014-12-15 | 2015-03-25 | 重庆市勘测院 | Digital photogrammetry method based on non-metric digital camera |
| CN105445137A (en) * | 2015-11-23 | 2016-03-30 | 中国科学院东北地理与农业生态研究所 | Sloping plot scale rill erosion three-dimensional dynamic monitoring method based on photographing |
| CN105716583A (en) * | 2016-01-26 | 2016-06-29 | 河海大学 | Exploration hole geological record base drawing generation method based on parallel photography |
| CN110345925A (en) * | 2019-08-06 | 2019-10-18 | 陕西土豆数据科技有限公司 | One kind is for five mesh aerial photograph quality testings and empty three processing methods |
| CN111754458A (en) * | 2020-05-18 | 2020-10-09 | 北京吉威空间信息股份有限公司 | Satellite image three-dimensional space reference frame construction method oriented to geometric precision processing |
| CN113607134A (en) * | 2021-07-30 | 2021-11-05 | 厦门图辰信息科技有限公司 | Auxiliary air-to-air triple encryption joint adjustment method based on high-precision POS (point of sale) framework route |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363958A (en) * | 2013-07-05 | 2013-10-23 | 武汉华宇世纪科技发展有限公司 | Digital-close-range-photogrammetry-based drawing method of street and house elevations |
| CN104457710A (en) * | 2014-12-15 | 2015-03-25 | 重庆市勘测院 | Digital photogrammetry method based on non-metric digital camera |
| CN105445137A (en) * | 2015-11-23 | 2016-03-30 | 中国科学院东北地理与农业生态研究所 | Sloping plot scale rill erosion three-dimensional dynamic monitoring method based on photographing |
| CN105716583A (en) * | 2016-01-26 | 2016-06-29 | 河海大学 | Exploration hole geological record base drawing generation method based on parallel photography |
| CN105716583B (en) * | 2016-01-26 | 2018-03-30 | 河海大学 | A kind of exploration adit geological record base map generation method based on parallel photography |
| CN110345925A (en) * | 2019-08-06 | 2019-10-18 | 陕西土豆数据科技有限公司 | One kind is for five mesh aerial photograph quality testings and empty three processing methods |
| CN110345925B (en) * | 2019-08-06 | 2022-08-05 | 土豆数据科技集团有限公司 | Quality detection and air-to-air processing method for five-eye aerial photo |
| CN111754458A (en) * | 2020-05-18 | 2020-10-09 | 北京吉威空间信息股份有限公司 | Satellite image three-dimensional space reference frame construction method oriented to geometric precision processing |
| CN111754458B (en) * | 2020-05-18 | 2023-09-15 | 北京吉威空间信息股份有限公司 | Satellite image three-dimensional space reference frame construction method for geometric fine processing |
| CN113607134A (en) * | 2021-07-30 | 2021-11-05 | 厦门图辰信息科技有限公司 | Auxiliary air-to-air triple encryption joint adjustment method based on high-precision POS (point of sale) framework route |
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Application publication date: 20121017 |