CN206741556U - A kind of three-dimensional modeling data acquisition system based on dynamic object - Google Patents

Abstract

The utility model discloses a three-dimensional modeling data acquisition system based on dynamic objects, which includes modeling equipment, a rotating device, a camera, a power supply device and a cloud platform, the camera is installed on the top and bottom of the modeling equipment through the rotating device, and the power supply equipment and The rotating device and the pan-tilt are electrically connected, the pan-tilt is connected with the camera, and an electric stage electrically connected with the power supply equipment is included, and the electric stage is installed in the modeling equipment. The utility model solves the problems of manual hand-held camera shaking, dynamic object posture changes and low acquisition efficiency, and makes the later three-dimensional modeling effect optimal.

Description

A 3D Modeling Data Acquisition System Based on Dynamic Objects

technical field

The utility model relates to the technical field of oblique photography, in particular to a three-dimensional modeling data acquisition system based on dynamic objects.

Background technique

With the development of oblique photogrammetry technology in foreign countries, domestic oblique photography technology is also gradually emerging, especially in the construction of smart cities, urban 3D modeling has been used in many applications, and the wider field is in the direction of aerial oblique photography; for small objects or small For dynamic objects, such as cultural toys, food, clothing and other commodities, the traditional two-dimensional vision in promotional and browsing pictures can no longer meet people's needs. At present, the browsing of two-dimensional images is transitioning to three-dimensional images. The technology for 3D modeling of such objects is also becoming mature, but the data collection methods and equipment required for 3D modeling of such objects are not available for the time being. Basically, digital devices such as mobile phones are used for manual operation, which cannot meet the requirements of 3D modeling. The image quality and efficiency of the modeling data are extremely low, especially for dynamic objects, such as pet cats, dogs, etc. Since the expressions and gestures of the objects are constantly changing at different times, it is impossible to obtain the object when collecting 3D modeling data. The data image of the same pose, resulting in extremely poor 3D modeling effect in the later stage.

At present, the data collection method for 3D modeling of small static objects is mainly to use data collection personnel to hold digital cameras or mobile phones and other data collection equipment, and walk around the object to shoot. This manual method of data collection efficiency is greatly reduced. , The jitter problem causes the image to be blurred, which cannot meet the data quality required by the later 3D modeling, and finally leads to an unsatisfactory 3D rendering.

The data collection method for 3D modeling of small dynamic objects is basically the same as the static data collection method, and the effect of 3D modeling in the later stage cannot be guaranteed at all. For example, for a pet cat, when the data is collected halfway, the cat’s posture or expression changes, and the data obtained by continuing to collect is inconsistent with the previous data. It is reflected in the later 3D modeling that the object captured in the latter image is different from the previous one. When the objects in the image data are matched with the same point, the same point cannot be found, and the same object cannot be found from the two images, resulting in matching failure and successful modeling.

Utility model content

The purpose of the utility model is to solve the problems of dynamic object posture changes and low acquisition efficiency, and improve the effect of three-dimensional modeling.

In order to achieve the above object, the present invention provides a three-dimensional modeling data acquisition system based on dynamic objects, including modeling equipment, rotating device, camera, power supply equipment and pan/tilt, and the camera is installed on the top and bottom of the modeling equipment through the rotating device , the power supply equipment is electrically connected with the rotation device and the pan-tilt, the pan-tilt is connected with the camera, and also includes an electric stage electrically connected with the power supply equipment, and the electric stage is installed in the modeling equipment; the rotation device includes a first fixer, a second A drive mechanism, a second fixer and a second drive mechanism, the first drive mechanism and the second drive mechanism are all connected to the pan-tilt, wherein,

The first holder includes a fixed arm, one end of the fixed arm is installed on the modeling equipment, and the other end is installed with a first rotating mechanism, and the first rotating mechanism is connected with the second holder through a rotating shaft;

The second holder has a first fixed frame and a second fixed frame, the second fixed frame is fixed on the camera, and the first fixed frame is connected with the second fixed frame through a second rotating mechanism.

Further, the modeling device includes a top annular ring, a bottom annular ring and a support frame, one end of the support frame is connected to the top annular ring, and the other end is connected to the bottom annular ring.

Further, the electric stage includes a bottom fixing device, a turntable plate and a rotating shaft, the rotating shaft is respectively connected to the turntable plate and the fixing device, a motor is installed in the fixing device, and the output shaft of the motor is connected to the rotating shaft.

In the above technical solution, the utility model combines artificial three-dimensional modeling image data acquisition technology, by integrating multiple digital cameras, according to the size of the object and the overlapping degree of image data, the placement angle and posture of the camera are set to meet the requirements of three-dimensional modeling. When the overlapping degree of each image data reaches the requirement of more than 65%, all cameras are exposed instantly, and the image data at the time of object exposure are collected, and then used for 3D modeling in the later stage. It solves the problems of manual hand-held camera shake, dynamic object posture changes and low acquisition efficiency, making the post-production 3D modeling effect optimal.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the structural representation of an embodiment of the three-dimensional modeling data acquisition system based on dynamic object described in the utility model;

Fig. 2 is the connection schematic diagram of an embodiment of the camera and the rotating device in the three-dimensional modeling data acquisition system based on the dynamic object described in the utility model;

Fig. 3 is a schematic structural diagram of an embodiment of the modeling equipment in the three-dimensional modeling data acquisition system based on dynamic objects described in the present invention.

detailed description

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further introduced in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-3, the present invention provides a three-dimensional modeling data acquisition system based on dynamic objects, including a modeling device 1, a rotating device 2, a camera 3, a power supply device and a pan/tilt 4, and the camera is installed through the rotating device On the top and bottom of the modeling equipment, the power supply equipment is electrically connected with the rotating device and the pan/tilt, and the pan/tilt is connected with the camera, and also includes an electric stage electrically connected with the power supply equipment, and the electric stage is installed in the modeling equipment; the rotating device It includes a first fixer, a first drive mechanism, a second fixer and a second drive mechanism, the first drive mechanism and the second drive mechanism are both connected to the pan/tilt, wherein,

The first holder includes a fixed arm 10, one end of the fixed arm is installed on the modeling equipment, and the other end is installed with a first rotating mechanism 11, and the first rotating mechanism is connected with the second holder through a rotating shaft;

The second holder is a first fixed frame 12 and a second fixed frame 13 , the second fixed frame is fixed on the camera, and the first fixed frame is connected with the second fixed frame through the second rotating mechanism 15 .

In this embodiment, 8 cameras are installed on the modeling device, and the 8 images taken by the 8 cameras need to have an overlap of more than 65% between each adjacent two (referring to the image taken by the camera and the image taken by the camera). According to the size of the object to be photographed, adjust the focal length of the camera, and use the similar triangle relationship to estimate the degree of overlap according to the imaging principle. When the accuracy reaches the requirement of more than 65%, the gimbal controls the instant exposure of all cameras, collects the image data of the object at the time of exposure, and then the gimbal is used for 3D modeling in the later stage. It solves the problems of manual hand-held camera shake, dynamic object attitude changes and low acquisition efficiency, making the post-production 3D modeling effect optimal.

The specific implementation is shown in Fig. 2, the first rotating mechanism 11 is set as a steering gear, and the axis of the steering gear is perpendicular to the camera. When the steering gear rotates, the structure drives the camera to adjust the angle in the roll direction; the second rotating mechanism is also set as a steering gear , the transmission shaft of the steering gear is horizontal to the camera, when the steering gear rotates, the structure drives the camera to adjust the angle in the pitch direction. The steering gear control circuit receives the control pulse from the signal source and drives the motor to rotate; the gear set reduces the speed of the motor by a large multiple, and amplifies the output torque of the motor by a response multiple, and then outputs it; the potentiometer and the final stage of the gear set rotate together , to measure the rotation angle of the steering gear shaft; the circuit board detects and judges the rotation angle of the steering gear according to the potentiometer, and then controls the steering gear to rotate to the target angle or keep it at the target angle. The steering gear is generally controlled by the single-chip microcomputer to send PWM signals to the steering gear, and some steering gears are directly controlled through the serial port of the computer.

During specific implementation, the camera can be selected as a SONY A6000 camera, but in fact it can be realized by using SONY or other brand micro-single digital cameras. The utility model does not have too many requirements for the camera model.

Further, as shown in FIG. 3 , the modeling device includes a top annular ring 101 , a bottom annular ring 102 and a support frame 103 , one end of the support frame is connected to the top annular ring, and the other end is connected to the bottom annular ring.

Specifically, screws and bolts are optionally used to fix the fixed arm on the top annular ring and the bottom annular ring of the modeling device, so as to realize the fixing of the camera. At the same time, in order to achieve the control of using the pan-tilt to control the camera selection angle and exposure, the pan-tilt can optionally be connected through a data line so as to control the camera and the first rotating mechanism and the second rotating mechanism on the camera.

Further, the electric stage includes a bottom fixing device, a turntable plate and a rotating shaft, the rotating shaft is respectively connected to the turntable plate and the fixing device, a motor is installed in the fixing device, and the output shaft of the motor is connected to the rotating shaft.

Some exemplary embodiments of the present utility model have been described above only by way of illustration. Needless to say, those skilled in the art can use various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims (3)

1. a kind of three-dimensional modeling data acquisition system based on dynamic object, including modelling apparatus, rotating device, camera, power supply Equipment and head, camera is arranged at the top of modelling apparatus by rotating device, bottom, power supply unit and rotating device, head electricity Connection, head is connected with camera, in addition to the motorized subject table electrically connected with power supply unit, motorized subject table are set installed in modeling It is standby interior；Rotating device includes the first fixator, the first drive mechanism, the second fixator and the second drive mechanism, the first driving machine Structure and the second drive mechanism are connected with head, wherein,

First fixator includes fixed arm, and fixed arm one end is arranged on modelling apparatus, and the other end installs the first rotating mechanism, the One rotating mechanism is connected by rotary shaft with the second fixator；

Second the first fixed mount of fixator, the second fixed mount, the second fixed mount are fixed on camera, and the first fixed mount passes through second Rotating mechanism is connected with the second fixed mount.

2. the three-dimensional modeling data acquisition system according to claim 1 based on dynamic object, it is characterised in that modeling is set Standby to include top annular ring, base circle ring and support frame, support frame one end is connected with top annular ring, the other end and bottom Annular ring connection.

3. the three-dimensional modeling data acquisition system according to claim 1 based on dynamic object, it is characterised in that electronic load Thing platform includes base fixture, disk plate and rotary shaft, and rotary shaft is connected with disk plate, fixing device respectively, fixing device Interior installation motor, motor output shaft and rotation axis connection.