CN211740206U - Oblique photogrammetry ground image control point mark - Google Patents
Oblique photogrammetry ground image control point mark Download PDFInfo
- Publication number
- CN211740206U CN211740206U CN202020772414.7U CN202020772414U CN211740206U CN 211740206 U CN211740206 U CN 211740206U CN 202020772414 U CN202020772414 U CN 202020772414U CN 211740206 U CN211740206 U CN 211740206U
- Authority
- CN
- China
- Prior art keywords
- control point
- image control
- ground image
- ring
- oblique photogrammetry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Road Signs Or Road Markings (AREA)
Abstract
The utility model relates to the technical field of oblique photogrammetry, in particular to a ground image control point mark for oblique photogrammetry, which comprises two black diffuse reflection blocks and two white reflection blocks; the black diffuse reflection block and the white reflection block respectively comprise right-angle sides, and the four right-angle sides are arranged adjacent to each other to form the cross shape; and circular reflecting rings are arranged outside the two black diffuse reflection blocks and the two white reflection blocks. The utility model discloses can compatible have the use, low cost, durable, the easy installation of control point to lay, have good anti-wind stability, higher discernment degree during the use, can effectively improve the three-dimensional model precision, improve thorn point operating efficiency, alleviate thorn point operation personnel work burden.
Description
Technical Field
The utility model belongs to the technical field of oblique photogrammetry technique and specifically relates to a slope photogrammetry ground looks like accuse point mark.
Background
In recent years, the oblique photogrammetry of the unmanned aerial vehicle has rapid development in the technologies of three-dimensional model acquisition, two-dimensional and three-dimensional integration, BIM and the like, and is widely applied to various aspects of national production and life.
When an orthoimage is manufactured in the traditional aerial photogrammetry, a photographic lens is required to be perpendicular to the ground, and most of ground image control points are obvious corners of houses, enclosing walls, hardened roads and the like, or materials such as paint are used for marking on the ground. The marks are often influenced by actual natural environment and human factors, uncertain factors are large, and the influence on the final result precision is uneven.
The oblique photogrammetry requires that the same target object needs different shooting angles (the origin of the 'inclination'), so that the ground image control points can form different degrees of distortion after oblique shooting, the corners of the traditional ground image control points are difficult to distinguish, and the plane precision requirement of the three-dimensional model precision cannot be met only by using the traditional image control point arrangement form.
The existing implementation scheme mainly comprises the steps of using the ground marks made of materials such as wood or steel frameworks and the like, and combining the ground marks through complex structures to form the obvious ground marker. These implementations have the following disadvantages in practical applications:
(1) complex manufacture, high cost, non-durability, difficult carrying and the like;
(2) the position of the control center point is not clear due to larger distortion of actual inclined shooting, and the identification degree is not obviously improved;
(3) the existing use of control points for hard ground in the centering is not considered.
(4) The reflection of natural light by the marker during actual use is not considered.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a slope photogrammetry ground looks like accuse point sign to solve the above-mentioned technical problem who exists among the prior art.
In order to solve the technical problem, the utility model provides a slope photogrammetry ground image control point mark, which comprises two black diffuse reflection blocks and two white reflection blocks; the two black diffuse reflection blocks are respectively arranged at one diagonal of the cross shape, and the two white reflection blocks are respectively arranged at the other diagonal of the cross shape; the black diffuse reflection block and the white reflection block respectively comprise right-angle sides, and the four right-angle sides are arranged adjacent to each other to form a cross shape; and circular reflection rings are arranged outside the two black diffuse reflection blocks and the two white reflection blocks.
Further, the black diffuse reflection block and the white reflection block are both squares with the same side length.
Furthermore, the center of the cross is the center of the circle of the circular reflection ring.
Further, the circular reflection ring comprises an inner ring and an outer ring, and the outer ring is sleeved outside the inner ring; the inner ring is yellow, and the outer ring is red; or the inner ring is red and the outer ring is yellow.
Furthermore, a through hole is formed in the center of the cross shape and used for aligning to an existing control point on the ground.
Furthermore, a metal ring is arranged at the through hole.
Furthermore, the utility model also comprises a ring-shaped reinforcing sleeve; the reinforcing sleeve is internally provided with filler; the circular reflection ring covers the upper surface of the reinforcing sleeve.
Further, the material of the reinforcing sleeve is cloth.
Further, a mark is arranged at a gap between the circular reflection ring and the black diffuse reflection block.
Furthermore, the black diffuse reflection block is made of cloth.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model provides a slope photogrammetry ground looks like accuse point sign, through the improvement of material, color, make when unmanned aerial vehicle low latitude slope shoots, avoid because of the reflection of material to sunshine and lead to the situation that looks like the unclear point; through structural improvement, the oblique photogrammetry can effectively use the existing control points on the road surface; the periphery of the mark adopts an annular reinforced sleeve form, and sand and stones can be inserted or poured into the annular reinforced sleeve in advance before use or on site, so that the mark is windproof and anti-moving. The utility model discloses can compatible have the use, low cost, durable, the easy installation of control point to lay, have good anti-wind stability, higher discernment degree during the use, can effectively improve the three-dimensional model precision, improve thorn point operating efficiency, alleviate thorn point operation personnel work burden.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an oblique photogrammetry ground image control point mark provided by an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a reinforcing sleeve according to an embodiment of the present invention.
Reference numerals:
1-white reflective block; 2-black diffuse reflection block; 3-a circular reflective ring;
4-the outer loop; 5-inner ring; 6-reinforcing sleeve;
7-filling.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
Fig. 1 is a schematic view of a slope photogrammetry ground image control point mark provided by the embodiment of the present invention, and as shown in fig. 1, the slope photogrammetry ground image control point mark provided by the embodiment includes two black diffuse reflection blocks 2 and two white reflection blocks 1; the two black diffuse reflection blocks 2 are respectively arranged at one diagonal of the cross shape, and the two white reflection blocks 1 are respectively arranged at the other diagonal of the cross shape; the black diffuse reflection block 2 and the white reflection block 1 both comprise right-angle sides, and the four right-angle sides are arranged adjacent to each other to form a cross shape; and circular reflecting rings 3 are arranged outside the two black diffuse reflection blocks 2 and the two white reflection blocks 1.
In this embodiment, the center of the cross is provided with a control center point, black light is absorbed by using the optical characteristics of black and white, and the light is set to be a diffuse reflection color, and white light is set to be the color of the reflection block with the strongest light reflectivity. Two kinds of colours are like going up crisscross setting and form the cross, and outside circular reflective ring 3 of cooperation can not produce the distortion when the slope is shot, and the degree of discernment is higher, can form obvious cross to can be accurate clear and definite control central point position. That is, the utility model provides a slope photogrammetry ground looks like accuse point sign simple structure, the preparation is simple and convenient, with low costs, durable and conveniently carry, can not produce the distortion when the actual slope is shot, and the control center point position is clear and definite, and the discernment degree improves greatly.
The black diffuse reflection block 2 is made of a material with a rough surface and capable of generating diffuse reflection, and is preferably made of cloth.
On the basis of the above embodiment, further, the black diffusion reflection block 2 and the white reflection block 1 are both squares having the same side length. The center of the cross is the center of the circular reflection ring 3. In this embodiment, the diagonal line of the black diffuse reflection block 2 and the diagonal line of the white reflection block 1 are connected to be just the diameter of the circular reflection ring 3, and one corner of the black diffuse reflection block 2 and the white reflection block 1 is just located on the circular reflection ring 3.
On the basis of the above embodiment, further, the circular reflection ring 3 includes an inner ring 5 and an outer ring 4, and the outer ring 4 is sleeved outside the inner ring 5; the inner ring 5 is yellow, and the outer ring 4 is red; alternatively, the inner ring 5 is red and the outer ring 4 is yellow. In this embodiment, according to the optical principle, the visible light with a larger wavelength is less likely to be blocked and scattered by particles suspended in the air, and is more likely to be found at a longer distance. The red and yellow wavelengths are both long and are not easily blocked and scattered by airborne particles. Meanwhile, because the wavelengths of the red and the yellow are different, when the red is blocked and scattered by the particles in the air, the yellow can be normally reflected, when the yellow is blocked and scattered by the particles in the air, the red can be normally reflected, and the matching of the red and the yellow can play a mutual compensation role, so that the circular reflection ring 3 can be fully reflected, and meanwhile, the matching of the red and the yellow can be used with the black and the white, and the identification degree is further improved.
On the basis of the above embodiment, further, a through hole is arranged at the center of the cross shape and is used for aligning the existing control point on the ground. The through hole is provided with a metal ring. In the embodiment, because some places have control point positions (formed by coating on the ground), the through holes can be aligned with the existing actual control point positions on the ground of the control point region during use, the existing control points on the ground are effectively utilized, the control point positions can be quickly found, the arrangement of control point marks is facilitated, and the practicability of the marks is improved.
Fig. 2 is a schematic cross-sectional view of a reinforcing sleeve according to an embodiment of the present invention, as shown in fig. 2, based on the above embodiment, further, the present invention further includes a reinforcing sleeve 6; the reinforcing sleeve 6 is internally provided with filler 7; the circular reflective ring 3 covers the upper surface of the reinforcing sleeve 6. Filler 7 can aggravate the weight of strengthening sleeve 6, avoids like control point sign to be blown or moved easily by wind, plays the effect of preventing wind and moving, thereby has improved the utility model discloses the stability of sign. Wherein the filler 7 in the reinforcing sleeve 6 may be sand.
Preferably, the material of the reinforcing sleeve 6 is cloth.
On the basis of the above embodiment, further, a mark is provided at the gap between the circular reflection ring 3 and the black diffuse reflection block 2. The identification can be warning characters, so that a prompting or warning effect is achieved. For example, the words "mapping logo, do not move" may be used.
To sum up, the utility model provides a slope photogrammetry ground looks like accuse point sign, through the improvement of material, color, make when unmanned aerial vehicle low latitude slope shoots, avoid because of the reflection of material to sunshine leads to the situation that the looks like accuse point is not clear; through structural improvement, the oblique photogrammetry can effectively use the existing control points on the road surface; the periphery of the sign adopts the form of an annular reinforced sleeve 6, and sand and stones can be inserted or poured into the annular reinforced sleeve 6 in advance before use or on site for preventing the sign from wind and moving. The utility model discloses can compatible have the use, low cost, durable, the easy installation of control point to lay, have good anti-wind stability, higher discernment degree during the use, can effectively improve the three-dimensional model precision, improve thorn point operating efficiency, alleviate thorn point operation personnel work burden.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A ground image control point mark for oblique photogrammetry is characterized by comprising two black diffuse reflection blocks and two white reflection blocks;
the two black diffuse reflection blocks are respectively arranged at one diagonal of the cross shape, and the two white reflection blocks are respectively arranged at the other diagonal of the cross shape; the black diffuse reflection block and the white reflection block respectively comprise right-angle sides, and the four right-angle sides are arranged adjacent to each other to form a cross shape; and circular reflection rings are arranged outside the two black diffuse reflection blocks and the two white reflection blocks.
2. The oblique photogrammetry ground image control point marker of claim 1, wherein the black diffuse reflection block and the white reflection block are both squares with the same side length.
3. The oblique photogrammetry ground image control point marker of claim 2, wherein the center of the cross is the center of the circle of the circular reflective ring.
4. The oblique photogrammetry ground image control point marker of claim 1, wherein the circular reflective ring comprises an inner ring and an outer ring, the outer ring being sleeved outside the inner ring;
the inner ring is yellow, and the outer ring is red; or the inner ring is red and the outer ring is yellow.
5. The oblique photogrammetry ground image control point marker of claim 4, wherein a through hole is provided at the center of the cross shape, and the through hole is used for aligning with the existing control point on the ground.
6. The oblique photogrammetry ground image control point marker of claim 5, wherein a metal ring is provided at the through hole.
7. The oblique photogrammetry ground image control point marker of claim 1, further comprising a reinforcing sleeve in the shape of a ring; the reinforcing sleeve is internally provided with filler; the circular reflection ring covers the upper surface of the reinforcing sleeve.
8. The oblique photogrammetry ground image control point marker of claim 7, wherein the material of the reinforcing sleeve is cloth.
9. The oblique photogrammetry ground image control point marker of claim 1, wherein a mark is provided at a gap between the circular reflective ring and the black diffuse reflective block.
10. The oblique photogrammetry ground image control point marker of claim 1, wherein the black diffuse reflection block is made of cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020772414.7U CN211740206U (en) | 2020-05-11 | 2020-05-11 | Oblique photogrammetry ground image control point mark |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020772414.7U CN211740206U (en) | 2020-05-11 | 2020-05-11 | Oblique photogrammetry ground image control point mark |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211740206U true CN211740206U (en) | 2020-10-23 |
Family
ID=72852743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020772414.7U Active CN211740206U (en) | 2020-05-11 | 2020-05-11 | Oblique photogrammetry ground image control point mark |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211740206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593714A (en) * | 2022-03-14 | 2022-06-07 | 国网山东省电力公司德州供电公司 | Ground image control point device for oblique photography modeling |
-
2020
- 2020-05-11 CN CN202020772414.7U patent/CN211740206U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593714A (en) * | 2022-03-14 | 2022-06-07 | 国网山东省电力公司德州供电公司 | Ground image control point device for oblique photography modeling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Vericat et al. | Accuracy assessment of aerial photographs acquired using lighter‐than‐air blimps: low‐cost tools for mapping river corridors | |
| CN211740206U (en) | Oblique photogrammetry ground image control point mark | |
| CN105043250B (en) | A kind of double-visual angle data alignment method based on 1 common indicium points | |
| CN106839984A (en) | The method that antenna radiation characteristics are tested is realized using industrial photogrammetry method | |
| CN206269800U (en) | A kind of quick-assembling lays the photo control point mark for the aerial survey of unmanned plane low latitude | |
| CN106403916B (en) | The total powerstation and its working method of alignment are measured based on digital image | |
| JP2019035728A (en) | Antiaircraft marker with screw | |
| Adami et al. | Ultra light UAV systems for the metrical documentation of cultural heritage: Applications for architecture and archaeology | |
| CN104764441A (en) | Rapid calibration equipment and system for road traffic accident field measurement | |
| CN206573113U (en) | The total powerstation of alignment is determined based on digital image | |
| CN208567884U (en) | A kind of new terrestrial photo control point structure | |
| JP2019074386A (en) | Anticraft beacon | |
| CN209487090U (en) | A kind of unmanned plane lands marker automatically | |
| CN218824686U (en) | Laser radar and optical camera combined calibration target device | |
| CN103868501A (en) | Contact-type active luminous plane identification device for vision measurement | |
| CN212779208U (en) | Highway cross section surveys device based on GPS RTK and laser rangefinder | |
| CN206193240U (en) | Solid state laser radar | |
| CN110375650A (en) | A kind of arch pose measuring method and system | |
| CN209570184U (en) | A kind of unmanned aerial vehicle photo control point sign board | |
| CN207608839U (en) | Road surface reflecting device | |
| JPS61243316A (en) | Industrial surveying signal | |
| CN218238844U (en) | Portable sign of multidirectional photogrammetry | |
| CN217583842U (en) | Device for mutual calibration between laser radar and camera | |
| CN216815497U (en) | Portable scanner target suitable for soft soil environment | |
| Li et al. | PHOTOGRAMMETRIC RECORDING OF ANCIENT BUILDINGS BY USING UNMANNED HELICOPTERS–CASES IN CHINA |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |