CN109978758B - Three-dimensional modeling method based on computer graphic image - Google Patents
Three-dimensional modeling method based on computer graphic image Download PDFInfo
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- CN109978758B CN109978758B CN201910229213.4A CN201910229213A CN109978758B CN 109978758 B CN109978758 B CN 109978758B CN 201910229213 A CN201910229213 A CN 201910229213A CN 109978758 B CN109978758 B CN 109978758B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/08—Projecting images onto non-planar surfaces, e.g. geodetic screens
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Abstract
The invention discloses a three-dimensional modeling method based on computer graphic images, wherein the three-dimensional modeling apparatus comprises a camera, a computer, an aerial photography instrument and an ultrasonic scanner; a three-dimensional modeling method based on computer graphic images comprises the following steps: the first step is as follows: and selecting 7-10 workers to take a picture of the object needing three-dimensional modeling from multiple angles by using a camera. According to the three-dimensional modeling method based on the computer graphic images, a plurality of workers acquire information of an object needing three-dimensional modeling, the object is photographed at an interval of 40 degrees, the same characteristic of the object to be modeled can be found in adjacent photos, the obtained pictures are processed through the computer, needed data are obtained through calculating coordinates of two-dimensional graphs and matching with an ultrasonic scanner, then top view data of the object to be three-dimensional modeled, which are shot by an aerial photography instrument, are matched with previous data to obtain the three-dimensional graph of the object, and therefore the three-dimensional modeling method is high in accuracy.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to a three-dimensional modeling method based on computer graphic images.
Background
Three-dimensional models are polygonal representations of objects, usually displayed by a computer or other video equipment, the displayed objects may be real world entities or fictional objects, and anything that exists in physical nature may be represented by three-dimensional models.
Before three-dimensional modeling operation is carried out on an object, the shape and certain characteristics of the object need to be collected, and then computer software is used for processing the collected information to convert the information into a three-dimensional model, but errors exist between a finally drawn three-dimensional model and a real object due to errors in the image characteristic collection process in the using process of the existing three-dimensional modeling method, so that the three-dimensional modeling method based on the computer graphic image is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a three-dimensional modeling method based on computer graphics images, which solves the problem that errors exist in a finally drawn three-dimensional model and a real object due to errors in the process of image feature acquisition in the using process of the conventional three-dimensional modeling method.
In order to achieve the purpose, the invention provides the following technical scheme: a three-dimensional modeling method based on computer graphic images is disclosed, wherein instruments for three-dimensional modeling comprise a camera, a computer, an aerial photography instrument and an ultrasonic scanner;
a three-dimensional modeling method based on computer graphic images comprises the following steps:
the first step is as follows: selecting 7-10 workers to take a picture of an object needing three-dimensional modeling in multiple angles by using a camera, and transmitting the taken picture to a computer;
the second step is that: shooting a top view of an object needing three-dimensional modeling by using an aerial photography instrument;
the third step: scanning an object needing three-dimensional modeling by using an ultrasonic scanner, and transmitting data obtained by scanning to a computer;
the fourth step: utilizing a computer to perform corresponding analysis processing on pictures shot by workers at different angles in the first step, and connecting the pictures shot by the same worker together to obtain a 360-degree panoramic picture of the object;
the fifth step: the computer processes all pictures shot by different workers into 360-degree panoramic pictures, and compares all the panoramic pictures to extract a picture which best accords with an original object;
and a sixth step: decomposing the picture obtained in the last step into four views of the object needing three-dimensional modeling;
the seventh step: the staff makes the four views obtained in the sixth step into two-dimensional graphs in proportion in the computer, and makes the top view of the object shot by the aerial photography instrument into two-dimensional graphs in proportion;
the eighth step: marking different points, line segments, surfaces and other characteristics in the obtained two-dimensional graph by using a computer, and establishing a corresponding two-dimensional coordinate system;
the ninth step: reflecting the two-dimensional coordinate system obtained in the eighth step in the corresponding three-dimensional coordinate through a computer, and comparing the two-dimensional coordinate system with the result obtained by scanning of the ultrasonic scanner;
the tenth step: and utilizing computer software to make the three-dimensional coordinates obtained in the ninth step into a three-dimensional model.
Preferably, each worker needs to take pictures of objects needing three-dimensional modeling at intervals of 40 degrees, and the starting point of taking pictures of each worker is different.
Preferably, the four views of the three-dimensional modeled object are front, left, right and rear views, respectively.
Preferably, the ratio of the picture to the two-dimensional graph on the computer is 1: 3.
preferably, in the process of obtaining the corresponding three-dimensional coordinate point through calculation, the two-dimensional coordinate point and a graph obtained after processing a picture shot by an aerial photography instrument need to be calculated correspondingly, and computer software used in the process is MATLAB.
Preferably, the computer software used for drawing the three-dimensional coordinate points into the three-dimensional model is UG.
The invention has the following beneficial effects:
according to the three-dimensional modeling method based on the computer graphic images, a plurality of workers acquire information of an object needing three-dimensional modeling, the object is photographed at an interval of 40 degrees, the same characteristic of the object to be modeled can be found in adjacent photos, the obtained pictures are processed through the computer, needed data are obtained through calculating coordinates of two-dimensional graphs and matching with an ultrasonic scanner, then top view data of the object to be three-dimensional modeled, which are shot by an aerial photography instrument, are matched with previous data to obtain the three-dimensional graph of the object, and therefore the three-dimensional modeling method is high in accuracy.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a three-dimensional modeling method based on computer graphic images, wherein three-dimensional modeling instruments comprise a camera, a computer, an aerial photography instrument and an ultrasonic scanner;
a three-dimensional modeling method based on computer graphic images comprises the following steps:
the first step is as follows: selecting 7-10 workers to take pictures of objects needing three-dimensional modeling by a camera at multiple angles, transmitting the shot pictures to a computer, wherein each worker needs to take pictures of the objects needing three-dimensional modeling at intervals of 40 degrees, the initial points of the pictures taken by each worker are different, the same characteristic of the object to be modeled can be found in the adjacent pictures, and the error of the finally manufactured three-dimensional model is minimized by setting multiple workers to collect the images of the same object;
the second step is that: shooting a top view of an object needing three-dimensional modeling by using an aerial photography instrument;
the third step: scanning an object needing three-dimensional modeling by using an ultrasonic scanner, and transmitting data obtained by scanning to a computer;
the fourth step: utilizing a computer to perform corresponding analysis processing on pictures shot by workers at different angles in the first step, and connecting the pictures shot by the same worker together to obtain a 360-degree panoramic picture of the object;
the fifth step: the computer processes all pictures shot by different workers into 360-degree panoramic pictures, and compares all the panoramic pictures to extract a picture which best accords with an original object;
and a sixth step: the picture obtained in the last step is decomposed into four views of the object needing three-dimensional modeling, wherein the four views of the object needing three-dimensional modeling are respectively a front view, a left view, a right view and a rear view, and therefore workers can conveniently make the picture into a two-dimensional graph on a computer;
the seventh step: and (3) making the four views obtained in the sixth step into a two-dimensional graph in a computer in proportion by a worker, and making a top view of an object shot by the aerial photography instrument into the two-dimensional graph in proportion by the worker, wherein the proportion of the two-dimensional graph on the computer to the image is 1: 3;
eighth step: marking different points, line segments, surfaces and other characteristics in the obtained two-dimensional graph by using a computer, and establishing a corresponding two-dimensional coordinate system;
the ninth step: reflecting the two-dimensional coordinate system obtained in the eighth step in the corresponding three-dimensional coordinate through a computer, comparing the two-dimensional coordinate system with a scanning result obtained by an ultrasonic scanner, correspondingly calculating the two-dimensional coordinate point and a graph obtained by processing a picture shot by an aerial photography instrument in the process of obtaining the corresponding three-dimensional coordinate point through calculation of the two-dimensional coordinate point, wherein computer software used in the process is MATLAB, and matching top view data of an object to be three-dimensionally modeled and shot by the aerial photography instrument with the previous data to obtain a three-dimensional graph of the object, so that the three-dimensional modeling method has higher accuracy;
the tenth step: and (4) making the three-dimensional coordinates obtained in the ninth step into a three-dimensional model by using computer software, and drawing the three-dimensional coordinate points into the three-dimensional model by using UG (Unigraphics).
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A three-dimensional modeling method based on computer graphic images is characterized in that: the three-dimensional modeling apparatus comprises a camera, a computer, an aerial photography instrument and an ultrasonic scanner;
the method comprises the following steps:
the first step is as follows: selecting 7-10 workers to take a picture of an object needing three-dimensional modeling in multiple angles by using a camera, and transmitting the taken picture to a computer;
the second step is that: shooting a top view of an object needing three-dimensional modeling by using an aerial photography instrument;
the third step: scanning an object needing three-dimensional modeling by using an ultrasonic scanner, and transmitting data obtained by scanning to a computer;
the fourth step: utilizing a computer to perform corresponding analysis processing on pictures shot by workers at different angles in the first step, and connecting the pictures shot by the same worker together to obtain a 360-degree panoramic picture of the object;
the fifth step: the computer processes all pictures shot by different workers into 360-degree panoramic pictures, and compares all the panoramic pictures to extract a picture which best accords with an original object;
and a sixth step: decomposing the picture obtained in the last step into four views of the object needing three-dimensional modeling;
the seventh step: the staff makes the four views obtained in the sixth step into two-dimensional graphs in proportion in the computer, and makes the top view of the object shot by the aerial photography instrument into two-dimensional graphs in proportion;
eighth step: marking different points, line segments, surfaces and other characteristics in the obtained two-dimensional graph by using a computer, and establishing a corresponding two-dimensional coordinate system;
the ninth step: reflecting the two-dimensional coordinate system obtained in the eighth step in the corresponding three-dimensional coordinate through a computer, and comparing the two-dimensional coordinate system with the result obtained by scanning of the ultrasonic scanner; in the process of obtaining the corresponding three-dimensional coordinate point through calculation, the two-dimensional coordinate point and a graph obtained after processing a picture shot by an aerial photography instrument need to be calculated correspondingly, and computer software used in the process is MATLAB;
the tenth step: and (4) making the three-dimensional coordinate points obtained in the ninth step into a three-dimensional model by using computer software, and drawing the three-dimensional coordinate points into the three-dimensional model by using UG (user generated) as the computer software.
2. A three-dimensional modeling method based on computer graphics image as claimed in claim 1, characterized in that: the four views of the object needing three-dimensional modeling are respectively a front view, a left view, a right view and a rear view.
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| CN107464283A (en) * | 2017-07-13 | 2017-12-12 | 广西我的科技有限公司 | A kind of method and device of three-dimensional spatial information collection analysis processing |
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| DE102006062061B4 (en) * | 2006-12-29 | 2010-06-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus, method and computer program for determining a position based on a camera image from a camera |
| US10319071B2 (en) * | 2016-03-23 | 2019-06-11 | Qualcomm Incorporated | Truncated square pyramid geometry and frame packing structure for representing virtual reality video content |
| US9821510B2 (en) * | 2016-04-18 | 2017-11-21 | Xerox Corporation | Using depth in three-dimensional object printing to form colors that change with viewing and illumination angles |
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| CN106385532A (en) * | 2016-08-30 | 2017-02-08 | 杨立新 | 3D real-time imaging method |
| CN107464283A (en) * | 2017-07-13 | 2017-12-12 | 广西我的科技有限公司 | A kind of method and device of three-dimensional spatial information collection analysis processing |
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