CN111598992B - Partition removing and rendering method and system based on Unity3D body and surface model - Google Patents
Partition removing and rendering method and system based on Unity3D body and surface model Download PDFInfo
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- CN111598992B CN111598992B CN202010271116.4A CN202010271116A CN111598992B CN 111598992 B CN111598992 B CN 111598992B CN 202010271116 A CN202010271116 A CN 202010271116A CN 111598992 B CN111598992 B CN 111598992B
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- 238000009877 rendering Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005192 partition Methods 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000008030 elimination Effects 0.000 claims description 7
- 238000003379 elimination reaction Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
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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
- G06T15/10—Geometric effects
- G06T15/40—Hidden part removal
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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
- G06T15/005—General purpose rendering architectures
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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
- G06T15/08—Volume rendering
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Abstract
The application provides a partition removing rendering method and a system based on a Unity3D body and a face model, wherein the method comprises the following steps: and a coordinate conversion step: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate; normal line transmission step: transmitting any point P and plane normal N in a plane to the unitshader through the cpu; and a plane judging step: judging whether the point on the model is above or below the plane; and a data rendering step: if the point on the model is above the plane, not rendering the point; if a point on the model is below the plane, the point is rendered if v < 0. The application achieves the purpose of dividing the plane model by the vector and normal angle determined by the model point and the plane internal point.
Description
Technical Field
The application relates to the technical field of model segmentation, in particular to a partition elimination rendering method and system based on a Unity3D body and a face model. And more particularly to a Unity3D model based surface curve measurement method.
Background
At present, the calculation amount of the segmentation model in the cpu is very large, and each triangular surface needs to be processed and then three-dimensional reconstruction is carried out.
In the prior art (chinese patent application No. 200910006405.5, which discloses a "three-dimensional model segmentation apparatus and method"), such a method for detecting a segmented model in a plane cannot guarantee real-time performance and good performance, although the three-dimensional reconstruction of the segmented model can be realized.
The prior patent document CN108479067a (application number: 201810325677.0) discloses a method and apparatus for rendering a game screen. The method comprises the following steps: acquiring a control meeting preset transparency; generating a grid model according to the control; synchronously loading a grid model corresponding to the control in the process that the control is displayed on the game picture; and respectively rendering pixels which are not blocked by the grid model and pixels corresponding to the control in the game picture.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide a partition elimination rendering method based on a Unity3D body and a surface model.
The application provides a partition elimination rendering method based on a Unity3D body and a plane model, which comprises the following steps of
And a coordinate conversion step: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate;
normal line transmission step: transmitting any point P and plane normal N in a plane to the unitshader through the cpu;
and a plane judging step: judging whether the point on the model is above or below the plane;
and a data rendering step: if the point on the model is above the plane, not rendering the point; if a point on the model is below the plane, the point is rendered if v < 0.
Preferably, the coordinate conversion step:
and obtaining the local coordinates of the model in the Unityloader, and converting the obtained local coordinates of the model into world coordinates through a matrix built in the Unityloader.
Preferably, the normal transmission step:
the data above the planar normal will be rejected;
data below the plane normal will be rendered.
Preferably, the plane judging step:
judging whether the point on the model is above or below the plane:
interpolating the coordinates of the point Xn on the model with the incoming in-plane point P to obtain a vector XnP, calculating XnP the dot product v of the plane normal N, if v >0, the point Xn being above the plane; if v <0, point Xn is below the plane.
Preferably, the data rendering step:
if v >0, the point is not rendered, and if v <0, the point is rendered.
The application provides a partition removing and rendering system based on a Unity3D body and a plane model, which comprises
And a coordinate conversion module: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate;
normal line transmission module: transmitting any point P and plane normal N in a plane to the unitshader through the cpu;
and the plane judging module is used for: judging whether the point on the model is above or below the plane;
and a data rendering module: if the point on the model is above the plane, not rendering the point; if a point on the model is below the plane, the point is rendered if v < 0.
Preferably, the coordinate conversion module:
and obtaining the local coordinates of the model in the Unityloader, and converting the obtained local coordinates of the model into world coordinates through a matrix built in the Unityloader.
Preferably, the normal transmission module:
the data above the planar normal will be rejected;
data below the plane normal will be rendered.
Preferably, the plane judgment module:
judging whether the point on the model is above or below the plane:
interpolating the coordinates of the point Xn on the model with the incoming in-plane point P to obtain a vector XnP, calculating XnP the dot product v of the plane normal N, if v >0, the point Xn being above the plane; if v <0, point Xn is below the plane.
Preferably, the data rendering module is characterized in that:
if v >0, the point is not rendered, and if v <0, the point is rendered.
Compared with the prior art, the application has the following beneficial effects:
1. the application achieves the purpose of dividing the plane model by the vector and normal angle determined by the model point and the plane internal point.
2. The application eliminates the model of volume rendering by using the face model as a carrier through Colormask 0.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a point on a judgment model provided by the application above or below a plane.
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
The application provides a partition elimination rendering method based on a Unity3D body and a plane model, which comprises the following steps of
And a coordinate conversion step: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate;
normal line transmission step: transmitting any point P and plane normal N in a plane to the unitshader through the cpu;
and a plane judging step: judging whether the point on the model is above or below the plane;
and a data rendering step: if the point on the model is above the plane, not rendering the point; if a point on the model is below the plane, the point is rendered if v < 0.
Specifically, the coordinate conversion step:
and obtaining the local coordinates of the model in the Unityloader, and converting the obtained local coordinates of the model into world coordinates through a matrix built in the Unityloader.
Specifically, the normal line transmission step:
the data above the planar normal will be rejected;
data below the plane normal will be rendered.
Specifically, the plane judgment step:
judging whether the point on the model is above or below the plane:
interpolating the coordinates of the point Xn on the model with the incoming in-plane point P to obtain a vector XnP, calculating XnP the dot product v of the plane normal N, if v >0, the point Xn being above the plane; if v <0, point Xn is below the plane.
Specifically, the data rendering step:
if v >0, the point is not rendered, and if v <0, the point is rendered.
The application provides a partition removing and rendering system based on a Unity3D body and a plane model, which comprises
And a coordinate conversion module: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate;
normal line transmission module: transmitting any point P and plane normal N in a plane to the unitshader through the cpu;
and the plane judging module is used for: judging whether the point on the model is above or below the plane;
and a data rendering module: if the point on the model is above the plane, not rendering the point; if a point on the model is below the plane, the point is rendered if v < 0.
Specifically, the coordinate conversion module:
and obtaining the local coordinates of the model in the Unityloader, and converting the obtained local coordinates of the model into world coordinates through a matrix built in the Unityloader.
Specifically, the normal transmission module:
the data above the planar normal will be rejected;
data below the plane normal will be rendered.
Specifically, the plane judgment module:
judging whether the point on the model is above or below the plane:
interpolating the coordinates of the point Xn on the model with the incoming in-plane point P to obtain a vector XnP, calculating XnP the dot product v of the plane normal N, if v >0, the point Xn being above the plane; if v <0, point Xn is below the plane.
Specifically, the method is characterized in that the data rendering module:
if v >0, the point is not rendered, and if v <0, the point is rendered.
The present application will be described more specifically by way of preferred examples.
Preferred example 1:
partition elimination rendering based on Unity3D volume and surface model:
step 1: model local coordinates are obtained in the unitshader and converted into world coordinates through unitjobjecttoworld (a matrix built in by Unity).
Step 2: transmitting any point P and plane normal N (data above the plane normal is to be removed and data below the plane normal is to be rendered) in a plane through the CPU;
step 3: judging whether the point on the model is above or below the plane: point X on the model n Interpolation is performed between the coordinates of (a) and the incoming in-plane point P to obtain a vector X n P, calculate X n P and the dot product v of the plane normal N.
Step 4: if v >0, the point is not rendered, and if v <0, the point is rendered.
Preferred example 2:
according to the method, the effect of dividing the model by the plane is achieved in the level SaderLab through the included angle between the vector determined by one point on the plane and the model point of the plane and the normal line of the plane, and the model on one side of the plane is removed by using a discard command.
The application uses the loader of the face model added with Colormask0 to reject the volume data of the model area to realize the effect of rejecting the volume model.
The application provides a partition elimination rendering method based on a Unity3D body and a face model, which comprises the following steps:
converting coordinates: obtaining a model local coordinate in a Unityloader and converting the model local coordinate into a world coordinate;
inputting data: transmitting a point in the plane and a plane normal to the unitshader through the cpu;
as shown in fig. 1, the step of judging the positional relationship between the points on the model and the plane comprises the following steps: determining a vector according to a point in the plane and a point on the model, and calculating an included angle between the vector and the normal, wherein the included angle is smaller than 90 degrees and is above the plane, and the included angle is larger than 90 degrees and is below the plane;
intercepting an area: intercepting an eighth area by taking intersections through three orthogonal planes;
the surface and volume model processing steps: creating a face model, using a loader of ColorMask 0; so that the area where the face model and the volumetric model intersect is truncated.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Those skilled in the art will appreciate that the systems, apparatus, and their respective modules provided herein may be implemented entirely by logic programming of method steps such that the systems, apparatus, and their respective modules are implemented as logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc., in addition to the systems, apparatus, and their respective modules being implemented as pure computer readable program code. Therefore, the system, the apparatus, and the respective modules thereof provided by the present application may be regarded as one hardware component, and the modules included therein for implementing various programs may also be regarded as structures within the hardware component; modules for implementing various functions may also be regarded as being either software programs for implementing the methods or structures within hardware components.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (2)
1. A partition elimination rendering method based on a Unity3D body and a face model is characterized by comprising the following steps of
And a coordinate conversion step: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate;
normal line transmission step: transmitting any point P and plane normal N in a plane to the unitshader through the cpu;
and a plane judging step: judging whether the point on the model is above or below the plane;
and a data rendering step: if the point on the model is above the plane, not rendering the point; if the point on the model is below the plane, rendering the point if v < 0;
the coordinate conversion step:
obtaining a model local coordinate in the Unityloader, and converting the obtained model local coordinate into a world coordinate through a matrix built in the Unityloader;
the plane judging step comprises the following steps:
judging whether the point on the model is above or below the plane:
interpolating the coordinates of the point Xn on the model with the incoming in-plane point P to obtain a vector XnP, calculating XnP the dot product v of the plane normal N, if v >0, the point Xn being above the plane; if v <0, point Xn is below the plane;
the normal line transmission step:
the data above the planar normal will be rejected;
data below the plane normal is to be rendered;
the data rendering step:
if v >0, the point is not rendered, and if v <0, the point is rendered.
2. A partition removing and rendering system based on a Unity3D body and a plane model is characterized by comprising
And a coordinate conversion module: obtaining a model local coordinate in a Unityloader, and converting the obtained model local coordinate into a world coordinate;
normal line transmission module: transmitting any point P and plane normal N in a plane to the unitshader through the cpu;
and the plane judging module is used for: judging whether the point on the model is above or below the plane;
and a data rendering module: if the point on the model is above the plane, not rendering the point; if the point on the model is below the plane, rendering the point if v < 0;
the coordinate conversion module is used for:
obtaining a model local coordinate in the Unityloader, and converting the obtained model local coordinate into a world coordinate through a matrix built in the Unityloader;
the plane judging module is used for:
judging whether the point on the model is above or below the plane:
interpolating the coordinates of the point Xn on the model with the incoming in-plane point P to obtain a vector XnP, calculating XnP the dot product v of the plane normal N, if v >0, the point Xn being above the plane; if v <0, point Xn is below the plane;
the normal line transmission module:
the data above the planar normal will be rejected;
data below the plane normal is to be rendered;
the data rendering module:
if v >0, the point is not rendered, and if v <0, the point is rendered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010271116.4A CN111598992B (en) | 2020-04-08 | 2020-04-08 | Partition removing and rendering method and system based on Unity3D body and surface model |
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| CN202010271116.4A CN111598992B (en) | 2020-04-08 | 2020-04-08 | Partition removing and rendering method and system based on Unity3D body and surface model |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345771A (en) * | 2013-06-28 | 2013-10-09 | 中国科学技术大学 | Efficient image rendering method based on modeling |
| CN104268922A (en) * | 2014-09-03 | 2015-01-07 | 广州博冠信息科技有限公司 | Image rendering method and device |
| CN109308735A (en) * | 2018-08-20 | 2019-02-05 | 上海嘉奥信息科技发展有限公司 | The method and its storage medium that data based on the rendering of Unity3D body punch |
| CN110910505A (en) * | 2019-11-29 | 2020-03-24 | 西安建筑科技大学 | Accelerated rendering method of scene model |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI450215B (en) * | 2010-12-14 | 2014-08-21 | Via Tech Inc | Pre-culling processing method, system and computer readable medium for hidden surface removal of image objects |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345771A (en) * | 2013-06-28 | 2013-10-09 | 中国科学技术大学 | Efficient image rendering method based on modeling |
| CN104268922A (en) * | 2014-09-03 | 2015-01-07 | 广州博冠信息科技有限公司 | Image rendering method and device |
| CN109308735A (en) * | 2018-08-20 | 2019-02-05 | 上海嘉奥信息科技发展有限公司 | The method and its storage medium that data based on the rendering of Unity3D body punch |
| CN110910505A (en) * | 2019-11-29 | 2020-03-24 | 西安建筑科技大学 | Accelerated rendering method of scene model |
Non-Patent Citations (3)
| Title |
|---|
| Trabecular Anatomy of the Axis Vertebra: A Study of Shaded Volume-Rendered Computed Tomography Images;K. Venugopal Menon等;《World Neurosurgery》;全文 * |
| 基于虚拟现实的渲染优化算法;李媛媛;罗训;;计算机系统应用(第06期);全文 * |
| 基于虚拟现实的渲染优化算法;李媛媛等;《计算机系统应用》;第28卷(第6期);全文 * |
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