CN111260710A - Three-dimensional presentation method based on colored mural - Google Patents
Three-dimensional presentation method based on colored mural Download PDFInfo
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- CN111260710A CN111260710A CN201911416861.7A CN201911416861A CN111260710A CN 111260710 A CN111260710 A CN 111260710A CN 201911416861 A CN201911416861 A CN 201911416861A CN 111260710 A CN111260710 A CN 111260710A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000013507 mapping Methods 0.000 claims abstract description 33
- 238000013499 data model Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 238000009877 rendering Methods 0.000 claims description 9
- 238000010422 painting Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/50—Depth or shape recovery
- G06T7/55—Depth or shape recovery from multiple images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/50—Depth or shape recovery
- G06T7/521—Depth or shape recovery from laser ranging, e.g. using interferometry; from the projection of structured light
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10028—Range image; Depth image; 3D point clouds
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Abstract
The embodiment of the invention discloses a three-dimensional presentation method based on a colored mural, which comprises the following steps: collecting mural data to generate a mural model A; constructing a mural model B according to the spatial position relation between the acquisition device and the wall of the mural; matching and combining the mural model A and the mural model B to generate a mural three-dimensional model; performing blocking processing on the mural model A to generate an uncut data model and a plurality of branch models; carrying out a plurality of mapping operations on the uncut data model; the method comprises the steps of copying a mapping operation result to a mural three-dimensional model, constructing a mural model A and a mural model B, then ensuring that the mapped three-dimensional model has a high-definition mapping by a method of blocking the mural model A, and finally mapping the mural three-dimensional model and the mural three-dimensional curved surface by means of mapping multiple mural models together or mapping a single mural model together to obtain the high-definition and clear three-dimensional mural, wherein the mural is displayed more truly and clearly.
Description
Technical Field
The invention relates to the field of image design, in particular to a three-dimensional presentation method based on a colored mural.
Background
Wall painting, the art on the wall, that is, the painting which people directly draw on the wall. Its decorative and aesthetic function makes it an important aspect of the environmental art as an accessory part of a building. Murals are one of the earliest forms of painting in human history. The murals are divided into thick-bottom murals, bottom-brushing murals, mounting murals and the like. Modern fresco can be divided into four types: hand painting, wall pasting painting and decorative painting.
The result of the image array technique is a three-dimensional vertex color model, which has the disadvantage that the higher the accuracy of the model colors and the larger the number of faces of the triangular face. As a result of this drawback, if a large amount of data is required to obtain a three-dimensional effect of high resolution, the data amount is too large, which directly affects the application range.
The plane directly collects and splices. Most mural walls are irregularly curved. Splicing together the planes captured by the images on the curved surfaces is generally a stretched image. The processed picture does not restore the three-dimensional mural well.
Disclosure of Invention
The invention aims to provide a three-dimensional presentation method based on a colored mural, and the three-dimensional presentation method based on the colored mural solves the technical problems.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a three-dimensional rendering method based on colored murals comprises the following steps:
s100, collecting mural data, and generating a mural model A according to a plurality of mural data groups;
s200, constructing a mural model B according to the spatial position relation between the acquisition device and the wall of the mural;
s300, matching and combining the mural model A and the mural model B to generate a mural three-dimensional model;
s400, carrying out blocking processing on the mural model A to generate an uncut data model and a plurality of branch models;
s500, performing multiple mapping operations on the uncut data model;
s600, copying the mapping operation result to the mural stereoscopic model.
Preferably, the mural data includes mural photograph data and mural curved-surface diagram data.
Preferably, the step of acquiring mural data comprises:
s101, shooting and collecting the mural at multiple angles through a camera or a digital back to obtain mural photo data;
and S102, three-dimensional scanning is carried out on the mural through a three-dimensional laser scanner, and the mural curved surface graph data are obtained.
Preferably, the mural model B is constructed by the following steps:
aligning each acquisition device with the corresponding acquired mural by oblique photography software to generate a point cloud;
and combining the point clouds according to the sequence of the spatial positions to generate a mural model B.
Preferably, in step S300, the step of matching and combining is: and carrying out turning, enlarging or reducing operations on the mural model A to ensure that the size and the overall shape of the mural model A and the mural model B are consistent, keeping the position of the mural model B fixed, and moving the operated mural model A to ensure that the mural model A is matched and aligned with the mural model B.
Preferably, step S200 further comprises saving the FBX format file and the photoscan format file of the mural model B.
Preferably, step S500 further comprises: and replacing the photoscan format file of the mural model B with the uncut data model, and performing multiple mapping operations.
Preferably, the method further comprises the steps of performing UV splitting operation on each branch model, then performing single mapping operation on the branch model after UV splitting and the FBX format file, and exporting the model and the map.
Has the advantages that: according to the invention, the mural model A and the mural model B are constructed, then the mapping of the three-dimensional model with high resolution is ensured by a method of blocking the mural model A, and finally the three-dimensional model of the mural and the three-dimensional curved surface of the mural are mapped in a mode of mapping a plurality of mural models together or mapping a single mural model together to obtain the high-resolution and clear three-dimensional mural, so that the mural photo or the mural picture is displayed more truly and clearly.
Drawings
Fig. 1 is a flow chart of the steps of the three-dimensional rendering method of the color mural of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
As shown in fig. 1, the present invention provides a three-dimensional rendering method based on color murals, comprising the steps of:
s100, collecting mural data, and generating a mural model A according to a plurality of mural data groups;
s200, constructing a mural model B according to the spatial position relation between the acquisition device and the wall of the mural; the acquisition device is a shooting camera or a three-dimensional scanner.
S300, matching and combining the mural model A and the mural model B to enable the size and the position relation of the mural model A and the mural model B to be consistent, and generating a mural three-dimensional model;
s400, performing blocking processing on the mural model A to generate an uncut data model and a plurality of branch models;
s500, performing multiple mapping operations on the uncut data model;
s600, copying the mapping operation result to the mural stereoscopic model.
The invention has the advantages that:
according to the invention, the mural model A and the mural model B are constructed, then the mapping of the three-dimensional model with high resolution is ensured by a method of blocking the mural model A, and finally the three-dimensional model of the mural and the three-dimensional curved surface of the mural are mapped in a mode of mapping a plurality of mural models together or mapping a single mural model together to obtain the high-resolution and clear three-dimensional mural, so that the mural photo or the mural picture is displayed more truly and clearly.
As a preferred embodiment of the present invention, the mural data includes mural photograph data and mural curved-surface diagram data.
As a preferred embodiment of the present invention, the step of acquiring mural data comprises:
s101, shooting and collecting the mural at multiple angles through a camera or a digital back to obtain mural photo data;
s102, three-dimensional scanning is carried out on the mural through the three-dimensional laser scanner, so that mural curved surface graph data are obtained, and the scanning result can be presented in scanning data processing software (Geomagic wrap software).
As a preferred embodiment of the invention, the mural model B is constructed by the following steps:
aligning each acquisition device with the corresponding acquired mural by oblique photography software (photoscan software) to generate a point;
combining the point clouds according to the sequence of the spatial positions to form a grid, generating a mural model B, importing the photos collected by the collecting device into a phptpscan software, finding out the positions of the collecting device in the collected mural photos, and then displaying the positions in a three-dimensional software.
As a preferred embodiment of the present invention, step S200 further includes saving the FBX format file and the photoscan format file of the mural model B. Information about the camera is automatically saved in the FBX file.
As a preferred embodiment of the present invention, in step S300, the construction step of the mural stereoscopic model is: and (3) importing the mural model A and the mural model B into the geographic wrap software together, and then manually matching and aligning the mural model A and the mural model B. And (3) fixing the position of the mural model B to enable the mural model A to actively move and to be gradually matched and aligned with the mural model B, so as to complete the construction of the three-dimensional mural model.
In a preferred embodiment of the present invention, after the location of the mural model a is determined, the mural model a is partitioned. The method for splitting the mural model A comprises the following steps: and importing the mural model A into splitting software, and splitting the mural model A into a plurality of blocks.
For example: and importing the mural model A into the geogenic wrap software, and setting the number of the blocks, the shapes and the edge numbers of the blocks and the cutting area.
As a specific example, the mural model A is divided into five blocks, which are respectively named A-00, A-01, A-02, A-03 and A-04.
A-00 is an uncut data model that can be subsequently used for single-sheet mapping operations. A-01, A-02, A-03 and A-04, which are branch models, and can be used for subsequent single-sheet mapping operation after UV splitting.
The branch mural models A-01, A-02, A-03 and A-04 need to be subjected to UV splitting operation, and specifically, the branch models are respectively led into zbrush 2019 software to obtain the branch models after UV splitting.
As a preferred embodiment of the present invention, step S500 further comprises: replacing the photoscan format file of the mural model B with the uncut data mural model A-00, and performing a plurality of mapping operations of the A-00 and the photoscan format file of the mural model B in photoscan software.
The method further comprises the steps of importing the FBX format file into digital engraving and texture painting software (Mudbox software), carrying out single mapping operation of the FBX format file and the split UV branch model, and exporting the model and the map. For example, the single mapping operation of splitting the UV A-01 and the FBX format file at the corresponding position, the single mapping operation of splitting the UV A-02 and the FBX format file at the corresponding position, the single mapping operation of splitting the UV A-03 and the FBX format file at the corresponding position, the single mapping operation of splitting the UV A-04 and the FBX format file at the corresponding position, and the single mapping operation of splitting the UV A-05 and the FBX format file at the corresponding position.
Preferably, the three-dimensional model of the mural and the three-dimensional curved surface of the mural are mapped in a mode of mapping a plurality of mural three-dimensional models together or mapping a single mural three-dimensional curved surface together to obtain the high-resolution and clear three-dimensional model and the high-resolution and clear poster, so that the mural can clearly and completely show the three-dimensional effect on a screen or a painting.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A three-dimensional rendering method based on colored murals is characterized by comprising the following steps:
s100, collecting mural data, and generating a mural model A according to a plurality of mural data groups;
s200, constructing a mural model B according to the spatial position relation between the acquisition device and the wall of the mural;
s300, matching and combining the mural model A and the mural model B to generate a mural three-dimensional model;
s400, carrying out blocking processing on the mural model A to generate an uncut data model and a plurality of branch models;
s500, performing multiple mapping operations on the uncut data model;
s600, copying the mapping operation result to the mural stereoscopic model.
2. The method according to claim 1, wherein the mural data comprises mural photo data and mural curved-surface graph data.
3. The method for three-dimensional rendering based on colored murals according to claim 2, wherein the step of acquiring mural data comprises:
s101, shooting and collecting the mural at multiple angles through a camera or a digital back to obtain mural photo data;
and S102, three-dimensional scanning is carried out on the mural through a three-dimensional laser scanner, and the mural curved surface graph data are obtained.
4. The method for three-dimensional rendering based on colored murals according to claim 1, wherein the mural model B is constructed by the steps of:
aligning each acquisition device with the corresponding acquired mural by oblique photography software to generate a point cloud;
and combining the point clouds according to the sequence of the spatial positions to generate a mural model B.
5. The method for three-dimensional rendering based on color mural according to claim 1, wherein in step S300, the step of matching and combining comprises: and carrying out turning, enlarging or reducing operations on the mural model A to ensure that the size and the overall shape of the mural model A and the mural model B are consistent, keeping the position of the mural model B fixed, and moving the operated mural model A to ensure that the mural model A is matched and aligned with the mural model B.
6. The method for three-dimensional rendering based on color murals according to claim 1, wherein the step S200 further comprises saving FBX format file and photoscan format file of the mural model B.
7. The method for three-dimensional rendering based on color mural according to claim 6, wherein the step S500 further comprises: and replacing the photoscan format file of the mural model B with the uncut data model, and performing multiple mapping operations.
8. The method as claimed in claim 6, further comprising performing a UV splitting operation on each of the branch models, and then performing a single mapping operation on the branch models after UV splitting and the FBX format file to derive models and maps.
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2019
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