Industrial camera track and preparation method thereof

Abstract

The present invention discloses an industrial camera track and a preparation method thereof, wherein the industrial camera track comprises: a limiting guide rail having one end fixedly arranged on a first bracket and the other end fixedly arranged on a second bracket; a tripod mounting base plate fixedly arranged at the bottom of the limiting guide rail; a plurality of limiting holes evenly distributed on the limiting guide rail, wherein the spacing between adjacent limiting holes is pre-calculated based on the parameters of the industrial camera used, the overlap of photographed photos, the parameters of the photographed field of view, and the size of the CCD target surface; a slider slidably arranged on the limiting guide rail and capable of sliding freely on the limiting guide rail, wherein the slider is provided with a slider fixing bolt and a camera fixing bolt. Since the spacing between adjacent limiting holes on the limiting guide rail is pre-calculated based on the parameters of the industrial camera used, the overlap of photographed photos, the parameters of the photographed field of view, and the size of the CCD target surface, it is possible to photograph the subject using only one industrial camera, and obtain a photo with a photo overlap of not less than 80% for subsequent modeling.

Description

Technical Field

[0001] The present invention relates to the field of industrial camera shooting auxiliary equipment, and in particular to an industrial camera track and a preparation method thereof. Background Art

[0002] Existing industrial cameras mostly use monocular or binocular cameras, and lack a fixed track. Monocular cameras are primarily used for inspection, but cannot determine the true dimensions of the object without a target. Binocular cameras can determine the true dimensions of the object, but require an additional camera, which is more expensive.

[0003] However, there is currently no auxiliary equipment that assists the monocular camera in performing limited-position shooting and enables the monocular camera to obtain the true size of the measured object.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an industrial camera track and a preparation method thereof, which can achieve shooting with a photo overlap of not less than 80% using a single industrial camera, thereby solving the above-mentioned technical problems existing in the prior art.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] An embodiment of the present invention provides an industrial camera track, comprising:

[0008] Limiting guide rail, first bracket, second bracket, two tripod mounting bases, slider and slider fixing bolts; wherein,

[0009] One end of the limiting guide rail is fixedly arranged on the first bracket, and the other end is fixedly arranged on the second bracket;

[0010] The limiting guide rail is evenly distributed with a plurality of limiting holes, and the spacing between adjacent limiting holes is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the shooting field parameters and the size of the CCD target surface;

[0011] The two tripod mounting base plates are fixedly arranged at intervals at the bottom of the limiting guide rail;

[0012] The slider is slidably arranged on the limiting guide rail and can slide freely on the limiting guide rail. The slider is provided with the slider fixing bolt that can be tightened to fix the position of the slider on the limiting guide rail;

[0013] The sliding block is provided with a camera fixing bolt for mounting an industrial camera.

[0014] An embodiment of the present invention further provides a method for preparing an industrial camera track, which is used for the industrial camera track of the present invention, comprising the following steps:

[0015] A plurality of limiting holes are evenly distributed on the limiting guide rail, and the spacing between adjacent limiting holes is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the shooting field parameters and the size of the CCD target surface;

[0016] The two ends of the limit guide rail are fixedly arranged on the first bracket and the second bracket respectively;

[0017] Two camera bracket mounting base plates are fixedly installed at intervals on the bottom of the limiting guide rail;

[0018] The slider provided with a camera fixing bolt and a slider fixing bolt is slidably arranged on the limiting guide rail.

[0019] Compared with the prior art, the industrial camera track and its preparation method provided by the present invention have the following beneficial effects:

[0020] Since the spacing between adjacent limit holes on the limit guide rail is pre-calculated based on the parameters of the industrial camera used, the overlap of the photos taken, the shooting field parameters and the size of the CCD target surface, it can meet the requirement of using only one industrial camera to shoot the object, and obtain photos with an overlap of not less than 80% for subsequent modeling; the industrial camera track serves as an auxiliary shooting tool for the industrial camera, which can enable the monocular camera to obtain the true size of the object being measured, achieve the effect of a binocular camera, thereby saving costs and facilitating long-term monitoring of the object being measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of an industrial camera track provided by an embodiment of the present invention;

[0023] In the figure: 1-limiting guide rail; 2-first bracket; 3-second bracket; 4-trip mount base; 5-slider; 51-slider base; 52-clamping base; 53-camera fixing bolt; 54-bubble level; 6-slider fixing bolt; 7-limiting hole. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the specific content of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments, and do not constitute a limitation of the present invention. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] First, the following terms may be used in this article:

[0026] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y includes both “X” or “Y” and “X and Y”.

[0027] The terms "include," "comprises," "contains," "has," or other similar expressions should be interpreted as non-exclusive. For example, "including certain technical features (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products, or manufactured articles, etc.) should be interpreted as including not only the technical features explicitly listed, but also other technical features known in the art that are not explicitly listed.

[0028] The term "consisting of" excludes any technical features not explicitly listed. If used in a claim, this term renders the claim closed, excluding any technical features other than those explicitly listed, except for conventional impurities associated with them. If this term appears only in a clause of a claim, it limits only the elements explicitly listed in that clause; elements listed in other clauses are not excluded from the claim as a whole.

[0029] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this document based on specific circumstances.

[0030] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, or preferred value within the numerical range, regardless of whether the range is explicitly stated. For example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges of "2 to 7," "2 to 6," "5 to 7," "3 to 4 and 6 to 7," "3 to 5 and 7," "2 and 5 to 7," etc. Unless otherwise specified, the numerical ranges stated herein include both their endpoints and all integers and fractions within the numerical range.

[0031] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to this document.

[0032] The industrial camera track and its preparation method provided by the present invention are described in detail below. Any information not described in detail in the examples of the present invention is prior art known to those skilled in the art. Where specific conditions are not specified in the examples of the present invention, the procedures were carried out in accordance with conventional conditions in the art or the conditions recommended by the manufacturer. Reagents or instruments used in the examples of the present invention, where the manufacturer is not specified, are commercially available conventional products.

[0033] like Figure 1 As shown, an embodiment of the present invention provides an industrial camera track, comprising:

[0034] Limiting guide rail 1, first bracket 2, second bracket 3, two tripod mounting bases 4, slider 5 and slider fixing bolt 6; wherein,

[0035] One end of the limiting guide rail 1 is fixedly arranged on the first bracket 2, and the other end is fixedly arranged on the second bracket 3;

[0036] The limiting guide rail 1 is evenly distributed with a plurality of limiting holes 7, and the spacing between adjacent limiting holes 7 is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the shooting field parameters and the CCD target surface size;

[0037] The two tripod mounting base plates 4 are fixedly arranged at intervals at the bottom of the limiting guide rail 1;

[0038] The slider 5 is slidably arranged on the limiting guide rail 1 and can slide freely on the limiting guide rail 1. The slider 5 is provided with the slider fixing bolt 6 that can be tightened to fix the position of the slider 5 on the limiting guide rail 1;

[0039] The slider 5 is provided with a camera fixing bolt 53 for mounting an industrial camera.

[0040] The above-mentioned industrial camera track also includes: a limiting rod, which is inserted and fixed in the limiting hole 7. Preferably, the limiting rod adopts a screw rod, and the limiting hole is provided with a thread. The two can be threaded together to fix the limiting rod in the limiting hole, playing the role of blocking the slider to limit the position.

[0041] In the above-mentioned industrial camera track, the tripod mounting base plate 4 is provided with a plurality of bolt connection holes that can match the installation of different camera tripods. Specifically, the camera bracket mounting base plate 4 is provided with three British 3 / 8 screw connection holes vertically and two British 1 / 4 screw connection holes on the left and right, which can adapt to the installation of different camera tripods.

[0042] Also included are two lifting camera tripods, which can be respectively mounted on the two tripod mounting base plates 4. The height of the entire industrial camera track can be conveniently adjusted by the two lifting camera tripods, making it easy to shoot and monitor objects at different heights.

[0043] In the above industrial camera track, the position limiting guide rail 1 is composed of two cylindrical rails arranged in parallel;

[0044] A plurality of limiting holes 7 are distributed on the upper end surface of each cylindrical track.

[0045] In the aforementioned industrial camera track, the spacing between adjacent limiting holes 7 is 128mm to 134mm. This spacing ensures that an industrial camera mounted on the slider captures images of cultural relics with an overlap of at least 80% during limited movement, simplifying the process and not affecting subsequent modeling and analysis of the photographed cultural relics.

[0046] In the above industrial camera track, the slider 5 includes:

[0047] Slider base plate 51, multiple clamping feet 52, bubble level 54 and the camera fixing bolt 53; wherein,

[0048] A plurality of clamping feet 52 are provided at intervals on the bottom surface of the slider base plate 51, which is clamped on the limiting guide rail 1 by the plurality of clamping feet 52 and can slide freely on the limiting guide rail 1;

[0049] The camera fixing bolt 53 is provided at the middle portion of the top surface of the slider base plate 51;

[0050] The bubble level 54 is arranged on the top surface of the slider base plate 51, and is located at the periphery of the camera fixing bolt 53. It is convenient to adjust the level of the limiting guide rail 1, and then adjust the level of the installed camera.

[0051] A threaded through hole is provided on the side of the slider base plate 51 for installing the slider fixing bolt 6. When the slider fixing bolt 6 is tightened inward, its front end can support the limiting guide rail in the slider base plate 51 to fix the position of the slider.

[0052] In the above industrial camera track, the spacing between adjacent limit holes on the limit guide rail is determined in the following manner, including:

[0053] First, use the formula Determine the first spacing S between adjacent limiting holes a1 In this formula, a is the horizontal photo resolution; D is the fixed photo resolution; m is the unit conversion constant; and d is the horizontal photo displacement. This formula for calculating the first spacing uses the resolution of the industrial camera and the preset photo overlap to calculate the spacing between adjacent limit holes on the limit guide rail under a fixed photo resolution.

[0054] Then through the formula Determine the first spacing S between adjacent limiting holes a2 In this formula, L is the distance between the optical center of the camera and the object being measured; w is the width of the CCD target surface; f is the focal length of the camera; and d is the photo displacement. This formula for calculating the second spacing uses the shooting field of view parameters and the CCD target surface size to calculate the spacing between the limit holes on the limit guide rail under variable photo resolution.

[0055] The smaller of the first and second spacings is used as the spacing between adjacent limiting holes on the limiting guide rail. This spacing value selection method can improve the wide applicability of the limiting guide rail.

[0056] An embodiment of the present invention further provides a method for preparing an industrial camera track, which is used to prepare the industrial camera track described above, comprising the following steps:

[0057] A plurality of limiting holes are evenly distributed on the limiting guide rail, and the spacing between adjacent limiting holes is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the photographic field of view, and the size of the CCD target surface;

[0058] The two ends of the limit guide rail are fixedly arranged on the first bracket and the second bracket respectively;

[0059] Two camera bracket mounting base plates are fixedly installed at intervals on the bottom of the limiting guide rail;

[0060] The slider provided with a camera fixing bolt and a slider fixing bolt is slidably arranged on the limiting guide rail.

[0061] In the above method, the spacing between adjacent limiting holes on the limiting guide rail is determined in the following manner, including:

[0062] First, a first spacing between adjacent limit holes on the limit guide rail at a fixed photo resolution is calculated based on the resolution of the industrial camera used and a preset photo overlap;

[0063] Then, according to the shooting field parameters and the CCD target surface size, the second spacing between the limit holes on the limit guide rail under the non-fixed photo resolution is calculated;

[0064] The smaller of the first and second spacings is used as the spacing between adjacent limiting holes on the limiting guide rail.

[0065] In the above method, the first spacing S a1 The calculation formula is: Wherein, Sa1 is the first spacing; a is the horizontal photo resolution; D is the fixed photo resolution; m is the unit conversion constant; d is the horizontal photo displacement;

[0066] The second distance S a2 The calculation formula is: Where L is the distance between the optical center of the camera and the object being measured; w is the width of the CCD target surface; f is the focal length of the camera; and d is the photo displacement.

[0067] In the above method, the predetermined spacing between the upper limit holes on the limit rail is 128 mm to 134 mm. This spacing is suitable for photographing cultural relics such as stone tablets.

[0068] In summary, the industrial camera track of the embodiment of the present invention can be seen as the spacing between adjacent limiting holes on its limiting guide rail is pre-calculated based on the parameters of the industrial camera used, the overlap of the photos taken, the shooting field of view and the size of the CCD target surface. Therefore, it is possible to use only one industrial camera to shoot the object and obtain photos with an overlap of not less than 80% for subsequent modeling.

[0069] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the industrial camera track and the preparation method thereof provided by the embodiments of the present invention are described in detail below with reference to specific embodiments.

[0070] Example

[0071] like Figure 1As shown, an embodiment of the present invention provides an industrial camera track that can be used to install an industrial camera to take photos of a subject, such as a fixed cultural relic, a stone tablet, a mural, a stone carving, etc. The track includes:

[0072] Limiting guide rail 1, first bracket 2, second bracket 3, tripod mounting base 4, slider 5 and slider fixing bolt 6; wherein,

[0073] One end of the limiting guide rail 1 is fixedly arranged on the first bracket 2, and the other end is fixedly arranged on the second bracket 3;

[0074] Two tripod mounting base plates 4 are fixedly provided at the bottom of the position limiting guide rail 1, and the two tripod mounting base plates 4 are spaced apart so as to be able to cooperate with the camera tripod to stably support the position limiting guide rail 1;

[0075] The limiting guide rail 1 is evenly distributed with a plurality of limiting holes 7, and the spacing between adjacent limiting holes 7 is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the shooting field of view and the size of the CCD target surface;

[0076] The slider 5 is movably arranged on the limiting guide rail 1 and can slide freely on the limiting guide rail 1. The slider 5 is provided with an industrial camera mounting component.

[0077] The method for preparing the above-mentioned industrial camera track comprises the following steps:

[0078] A plurality of limiting holes are evenly distributed on the limiting guide rail, and the spacing between adjacent limiting holes is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the shooting field parameters and the size of the CCD target surface;

[0079] The two ends of the limit guide rail are fixedly arranged on the first bracket and the second bracket respectively;

[0080] A tripod mounting base is fixedly arranged at the bottom of the limiting guide rail;

[0081] The slider provided with a camera fixing bolt and a slider fixing bolt is arranged on the limiting guide rail in a free sliding manner.

[0082] Specifically, the spacing is calculated in advance based on the parameters of the industrial camera used, the overlap of the captured photos, the field of view, and the size of the CCD target surface as follows:

[0083] First, based on the camera resolution of the industrial camera and the determined photo overlap, a first spacing between adjacent limiting holes on the limiting guide rail at a fixed photo resolution (e.g., 300 DPI) is calculated;

[0084] Then, based on the shooting field of view parameters, CCD target surface size and other information, the second spacing between adjacent limiting holes on the limiting guide rail is calculated when the DPI is not fixed;

[0085] The smaller of the first and second spacings is used as the spacing between adjacent limiting holes on the limiting guide rail, which can ensure the versatility of the limiting guide rail.

[0086] Taking the track used by an industrial camera for photographing stone tablets and cultural relics as an example, the specific method for calculating the spacing between the limit holes is explained as follows:

[0087] First, according to the determined horizontal photo resolution a of 7915, the fixed photo resolution D of 300DPI, the unit conversion constant m of 2.54, the horizontal photo displacement d of 20%, through the first spacing S a1 The calculation formula Calculate the first spacing

[0088] Then, according to the distance L between the camera optical center and the object to be measured, which is 100, the width w of the CCD target surface is 22.5, the focal length f of the camera is 35, and the photo displacement d is 20%, the second spacing S is used to determine the distance between the camera optical center and the object to be measured. a2 The calculation formula Calculate the second spacing

[0089] The smaller of the first and second spacings obtained above is taken as the spacing between adjacent limiting holes on the limiting guide rail, that is, 128 mm is used as the spacing between the limiting holes.

[0090] Taking into account the size of the actual filming area and the distribution, occurrence, and size of the cracks on the stone monument, the spacing calculated using the aforementioned principle was limited to between 128mm and 134mm. Based on the calculated spacing and the actual site requirements, the industrial camera track was designed. The track has 17 stations and a total length of 1.2 meters.

[0091] Due to errors in track fabrication, the track limit spacing required remeasurement. This was accomplished using both a vernier caliper and high-precision 3D laser scanning. The vernier caliper was used to measure the diameter and spacing of the track limit holes, calculate the distance between adjacent limit holes, and then fit the plane coordinates of the camera position. The slider was moved, and a 3D laser scanner was used to scan the cloud data of 17 stations of the limit track. The 17-station cloud data was then assembled in Geomagic software to generate a model, and the 3D coordinates of the camera position were measured.

[0092] The vernier caliper method offers a measurement accuracy of up to 0.05mm. It can measure track information, obtain X- and Y-axis data, and calculate the intersection coordinates of the camera position, but it cannot obtain the true coordinates of the camera position. Portions beyond the vernier caliper's range cannot be measured. High-precision 3D laser scanning offers a measurement accuracy of up to 0.049mm. It can measure track information, obtain X- and Y-axis data, and directly obtain the true coordinates of the camera position. It has no range restrictions, allows for multi-angle measurement, and obtains 3D track model information. This comparison shows that the high-precision 3D laser scanning method achieves higher accuracy in re-measurement of industrial camera tracks.

[0093] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art.

Claims

1. An industrial camera track, characterized in that: include: A limiting guide rail (1), a first bracket (2), a second bracket (3), two tripod mounting bases (4), a slider (5) and a slider fixing bolt (6); wherein, One end of the position-limiting guide rail (1) is fixedly arranged on the first bracket (2), and the other end is fixedly arranged on the second bracket (3); The limiting guide rail (1) is evenly distributed with a plurality of limiting holes (7), and the spacing between adjacent limiting holes (7) is a spacing determined in advance based on the parameters of the industrial camera used, the overlap of the photographed photos, the parameters of the photographed field of view, and the size of the CCD target surface; the spacing between adjacent limiting holes on the limiting guide rail is determined in the following manner, including: firstly calculating a first spacing between adjacent limiting holes on the limiting guide rail at a fixed photo resolution based on the resolution of the industrial camera used and the preset photo overlap; the first spacing S a1 The calculation formula is: ;in, S a1 is the first spacing; a is the horizontal photo resolution; D is the fixed photo resolution; m is the unit conversion constant; d is the horizontal photo displacement; Then, according to the shooting field of view parameters, camera parameters and CCD target surface size, a second spacing between the limiting holes on the limiting guide rail under a non-fixed photo resolution is calculated; The second spacing S a2 The calculation formula is: ; Wherein, L is the distance between the optical center of the camera and the object being measured; w is the width of the CCD target surface; f is the focal length of the camera; d is the horizontal photo displacement; The smaller of the first and second spacings is used as the spacing between adjacent limiting holes on the limiting guide rail; The two tripod mounting base plates (4) are fixedly arranged at intervals on the bottom of the limiting guide rail (1); The slider (5) is slidably arranged on the limiting guide rail (1) and can slide freely on the limiting guide rail (1); the slider (5) is provided with the slider fixing bolt (6) which can be tightened to fix the position of the slider (5) on the limiting guide rail (1); The slider (5) is provided with a camera fixing bolt (53) for mounting an industrial camera; It also includes: a limiting rod, which is inserted and fixed in the limiting hole (7) and plays a role in blocking the sliding block (5) to limit the position; The tripod mounting base plate (4) is provided with a plurality of bolt connection holes capable of matching and mounting different camera tripods; It also includes two lifting camera tripods, which can be respectively mounted on the two tripod mounting base plates (4).

2. The industrial camera track according to claim 1, characterized in that The position-limiting guide rail (1) is composed of two cylindrical rails arranged in parallel, and a plurality of position-limiting holes (7) are distributed on the upper end surface of each cylindrical rail.

3. The industrial camera track according to claim 1, characterized in that The spacing between adjacent limiting holes (7) is 128 mm to 134 mm.

4. The industrial camera track according to claim 1, characterized in that The slider (5) comprises: A slider base plate (51), a plurality of clamping feet (52), a bubble level (54) and the camera fixing bolt (53); wherein, A plurality of clamping feet (52) are arranged at intervals on the bottom surface of the slider base plate (51), and the slider is clamped on the limiting guide rail (1) by the plurality of clamping feet (52) and can slide freely on the limiting guide rail (1); The camera fixing bolt (53) is arranged at the middle portion of the top surface of the slider bottom plate (51); The bubble level (54) is arranged on the top surface of the slider base plate (51) and is located on the periphery of the camera fixing bolt (53).

5. A method for preparing an industrial camera track, characterized in that: The method for preparing the industrial camera track according to any one of claims 1 to 4 comprises the following steps: A plurality of limiting holes are evenly distributed on the limiting guide rail, and the spacing between adjacent limiting holes is pre-calculated based on the parameters of the industrial camera used, the overlap of the photographed photos, the shooting field parameters and the size of the CCD target surface; The two ends of the limit guide rail are fixedly arranged on the first bracket and the second bracket respectively; Install two tripod mounting base plates at intervals and fixedly on the bottom of the limiting guide rail; The slider provided with a camera fixing bolt and a slider fixing bolt is slidably arranged on the limiting guide rail.

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