CN108038913A - A kind of method based on the realistic model of photogrammetric generation and textures - Google Patents
A kind of method based on the realistic model of photogrammetric generation and textures Download PDFInfo
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- CN108038913A CN108038913A CN201711294399.9A CN201711294399A CN108038913A CN 108038913 A CN108038913 A CN 108038913A CN 201711294399 A CN201711294399 A CN 201711294399A CN 108038913 A CN108038913 A CN 108038913A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/50—Lighting effects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2200/00—Indexing scheme for image data processing or generation, in general
- G06T2200/08—Indexing scheme for image data processing or generation, in general involving all processing steps from image acquisition to 3D model generation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
A kind of method based on the realistic model of photogrammetric generation and textures, multi-angled shooting object and the model for creating the object that is taken；Textures are obtained by the photo of shooting；Model and textures are imported into engine generation high-precision model.Advantage is：Cost of manufacture and fabrication cycle are reduced using photogrammetric generation model and textures, and more careful realistic model and textures can be obtained；Reduce the engraving of Gao Mo, the making of middle model, the plot step of textures on the whole；Only need by generating Gao Mo, the low mould of topology, the textures for correcting baking can be obtained by model.
Description
Technical field
The present invention relates to a kind of method based on the realistic model of photogrammetric generation and textures.
Background technology
VR is provided really on the spot in person at present, can the really display with virtual world interaction and interaction technique, seek
More preferable interactive experience and the virtual environment immersed completely are made, under high-freedom degree virtual world and high picture precision, also
Ensure high display efficiency, whole team has been founded more perfect virtual world content and supported.
(Photogrammetry) material resource of outdoor scene materials production is directed to the object in VR game, due to being the body of immersion
Test, the required precision for object is constantly increased.
If expecting realistic high-precision model and textures in traditional game 3D fine arts development processes, particularly have
There is the model of hypostazation pattern, need to start from from low mould in making, model in then making, and then it is right to be engraved as high mould
Bakeed again afterwards, the low mould of topology, baked mapping, making complicated processes, the fabrication cycles such as textures all can be very long.
The content of the invention
In order to solve the shortcomings of the prior art, write it is an object of the invention to provide one kind based on photogrammetric generation
The method of real mould and textures.
A kind of method based on the realistic model of photogrammetric generation and textures of the present invention,
Multi-angled shooting object and the model for creating the object that is taken；
Textures are obtained by the photo of shooting；
Model and textures are imported into engine generation high-precision model.
Further, multi-angled shooting Article Step includes：Prepare and build shooting equipment；Camera is adjusted, around object
Shot, keep often rotating 5-15 degree one high-precision photo of acquisition.
Further, multi-angled shooting Article Step includes：Prepare and build shooting equipment；Camera is adjusted, around object
Shot, keep mobile 20CM-80CM to obtain a high-precision photo.
Further, using the photo of shooting, camera relative position is obtained by calculating, so that it is determined that shooting object
Size, position, ratio and color information.
Further, topology is carried out using topological software to model, according to demand topological low model and point good UV.
Further, remove shade above textures using software, remove the contrast of illumination.
Further, normal is obtained with robin line software, OA, makes high-precision textures.
Further, model and textures are imported into engine and obtains high-precision model, object is calibrated using chromium ball and colour atla
Color and high optical information.
Advantage is：Cost of manufacture and fabrication cycle are reduced using photogrammetric generation model and textures, and can be obtained
To more careful realistic model and textures；Reduce the engraving of Gao Mo, the making of middle model, the drafting step of textures on the whole
Suddenly；Only need by generating Gao Mo, the low mould of topology, the textures for correcting baking can be obtained by model.
Brief description of the drawings
Attached drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, and with the present invention's
Embodiment together, for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings：
The flow chart of Fig. 1 present invention.
Embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing 1, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
A kind of method based on the realistic model of photogrammetric generation and textures,
Multi-angled shooting object and the model for creating the object that is taken；
Textures are obtained by the photo of shooting；
Model and textures are imported into engine generation high-precision model.
A kind of method based on the realistic model of photogrammetric generation and textures, multi-angled shooting Article Step include：Prepare
With build shooting equipment；Camera is adjusted, is shot around object, keeps often rotating 5-15 degree one high-precision photograph of acquisition
Piece.
A kind of method based on the realistic model of photogrammetric generation and textures, multi-angled shooting Article Step include：Prepare
With build shooting equipment；Camera is adjusted, is shot around object, keeps mobile 20CM-80CM to obtain a high-precision photograph
Piece.
A kind of method based on the realistic model of photogrammetric generation and textures, using photo, camera is obtained by calculating
Relative position, so that it is determined that the size of shooting object, position, ratio and color information.
A kind of method based on the realistic model of photogrammetric generation and textures, carries out topology, according to need using topological software
Ask the low model of topology and point good UV.
A kind of method based on the realistic model of photogrammetric generation and textures, removes the shade above textures using software,
Remove the contrast of natural lighting.
A kind of method based on the realistic model of photogrammetric generation and textures, obtains normal with robin line software, makes high
The textures of precision.
A kind of method based on the realistic model of photogrammetric generation and textures, it is high-precision to import engine acquisition by model and textures
Model is spent, uses the color and high optical information of chromium ball and colour atla calibration object.
A kind of method based on the realistic model of photogrammetric generation and textures,
The first step：Shoot photo；
Second step：Calculated by software and the photo that aligns；
3rd step：Shooting object size, ratio, material are obtained by calculating；
4th step：Generate model and textures；
5th step：The low mould of topology；
6th step：Generate normal map；
7th step：Reduced model, textures.
A kind of method based on the realistic model of photogrammetric generation and textures,
Step S1, prepares a camera first, prepares chromium ball and colour atla.
Step S2, prepares to need the object live entities model made.
Step S3, is shot around physical model, keeps often rotating 5-15 degree or mobile 20CM-80CM just obtains one
High-precision photo is opened, keeps the continuity of photo, textures are continuously not have fuzzy place when so generation.
Step S4, using these photos, the relative position of camera is obtained by calculating, so that it is determined that, article size, position
Put, ratio and color information, calculating low-quality photo by preview mode judges that photo either with or without error message, confirms nothing
After by mistake, start to calculate the object of high quality.
Step S5, using the high-precision model of Software Create, and obtains color information, after model generation, to defect part
Repaired by software.
Step S6, after obtaining model, using Max, Maya, Zb softwares carry out topology, according to demand topological low model and point
Good UV.
Step S7, removes the shade above color map using software, removes the contrast of natural lighting, in game engine
Can preferably be influenced that conflicting for shadow will not be produced be subject to engine illumination.
Step S8, obtains normal, AO, textures, make high-precision textures with robin line software.
Step S9, imports engine and obtains high-precision model, ready chromium ball when being shot before use, and colour atla school
The color of quasi- object and high optical information.
One of ordinary skill in the art will appreciate that：The foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, its still can to foregoing embodiments record technical solution modify, or to which part technical characteristic into
Row equivalent substitution.Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should all include
Within protection scope of the present invention.
Claims (8)
- A kind of 1. method based on the realistic model of photogrammetric generation and textures, it is characterised in that：Multi-angled shooting object and the model for creating the object that is taken；Textures are obtained by the photo of shooting；Model and textures are imported into engine generation high-precision model.
- A kind of 2. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Multi-angled shooting Article Step includes：Prepare and build shooting equipment；Camera is adjusted, is shot around object, holding is often revolved Turn 5-15 degree and obtain a high-precision photo.
- A kind of 3. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Multi-angled shooting Article Step includes：Prepare and build shooting equipment；Camera is adjusted, is shot around object, keeps movement 20CM-80CM obtains a high-precision photo.
- A kind of 4. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Using the photo of shooting, camera relative position is obtained by calculating, so that it is determined that the size of shooting object, position, ratio with And color information.
- A kind of 5. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Topology is carried out using topological software to model, according to demand topological low model and point good UV.
- A kind of 6. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Remove the shade above textures using software, remove the contrast of illumination.
- A kind of 7. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Normal, OA are obtained with robin line software, and makes high-precision textures.
- A kind of 8. method based on the realistic model of photogrammetric generation and textures according to claim 1, it is characterised in that： Model and textures are imported into engine and obtain high-precision model, and is believed using the color and bloom of chromium ball and colour atla calibration object Breath.
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| CN201711294399.9A CN108038913A (en) | 2017-12-08 | 2017-12-08 | A kind of method based on the realistic model of photogrammetric generation and textures |
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| CN201711294399.9A CN108038913A (en) | 2017-12-08 | 2017-12-08 | A kind of method based on the realistic model of photogrammetric generation and textures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112734624A (en) * | 2020-12-16 | 2021-04-30 | 江苏火米互动科技有限公司 | High-precision model optimization based on Unity3D engine |
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Application publication date: 20180515 |