CN106780702A - A kind of method and system based on physical colored - Google Patents
A kind of method and system based on physical colored Download PDFInfo
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- CN106780702A CN106780702A CN201611203374.9A CN201611203374A CN106780702A CN 106780702 A CN106780702 A CN 106780702A CN 201611203374 A CN201611203374 A CN 201611203374A CN 106780702 A CN106780702 A CN 106780702A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06T15/00—3D [Three Dimensional] image rendering
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Abstract
The invention discloses a kind of method based on physical colored, including：The ambient light texture sequence of item is reflected with micro- surface using the generation of environment maps piece；According to the ambient light texture sequence, computing environment light texture；Using adding the HDR illumination of simulation to carry out contrast adjustment to the ambient light texture, initial reflection color is obtained；According to the initial reflection color, final reflection colour is calculated using Fresnel effect reflection item；The final reflection colour is added with diffusing reflection color and obtains final lighting color；The method can improve the efficiency of the illumination model based on physical colored, improve rendering efficiency, allow it that popularization is realized on the mobile platforms such as mobile phone；The invention also discloses a kind of system based on physical colored, with above-mentioned beneficial effect.
Description
Technical field
The present invention relates to field of Computer Graphics, more particularly to a kind of method and system based on physical colored.
Background technology
Illumination model based on physical colored can increase substantially the sense of reality of material color applying, while for fine arts personnel enter
Row material finds corresponding physical parameter foundation when developing；In having been widely used for time epoch game engine at present.
As the popularization of the mobile platforms such as mobile phone, mobile platform can realize game, ar application scenarios, therefore in movement
Realize that high-quality three-dimensional rendering effect has urgent demand on platform.But be currently based on the illumination model of physical colored due to
Operational efficiency is relatively low in mobile platform, is not popularized also on the mobile platforms such as mobile phone.Therefore, how to be lifted and based on physics
The efficiency of the illumination model of color, allows it to be realized on the mobile platforms such as mobile phone.
The content of the invention
It is an object of the invention to provide a kind of method and system based on physical colored, the illumination based on physical colored is improved
The efficiency of model, improves rendering efficiency, allows it that popularization is realized on the mobile platforms such as mobile phone.
In order to solve the above technical problems, the present invention provides a kind of method based on physical colored, including：
The ambient light texture sequence of item is reflected with micro- surface using the generation of environment maps piece；
According to the ambient light texture sequence, computing environment light texture；
Using adding the HDR illumination of simulation to carry out contrast adjustment to the ambient light texture, obtain just
Beginning reflection colour；
According to the initial reflection color, final reflection colour is calculated using Fresnel effect reflection item；
The final reflection colour is added with diffusing reflection color and obtains final lighting color.
Optionally, the ambient light texture sequence of item is reflected with micro- surface using the generation of environment maps piece, including：
Environment maps piece is carried out into mirror image processing, and the picture after two mirror images is spliced in environment maps piece respectively
The left and right sides, forms texture picture；
Pre-determined number gaussian filtering process is carried out to the texture picture, corresponding Gauss treatment texture picture is generated；
Pyramid resampling is carried out to whole Gausses treatment texture picture；
The center presumptive area in the picture after resampling is chosen, one group of generation is just to the ambient light texture of different roughness
Sequence.
Optionally, according to the ambient light texture sequence, computing environment light texture, including：
Reflective vector of the camera vector relative to surface normal is calculated, and calculates the corresponding environment texture of reflective vector and sat
Mark；
Using the ambient light texture sequence, the corresponding environment texture of reflective vector is selected according to material roughness；
Sampled using the environment texture coordinate and the environment texture, obtained ambient light texture.
Optionally, contrast tune is carried out to the ambient light texture using the HDR illumination of addition simulation
Section, obtains initial reflection color, including：
Calculate the average color of the ambient light texture and the environment texture；
Using the HDR illumination for adding simulation, the contrast for adjusting the average color obtains initial reflection face
Color.
Optionally, according to the initial reflection color, final reflection colour, bag are calculated using Fresnel effect reflection item
Include：
It is strong Fresnel effect to be calculated using formula frenel+ (1.0-frenel) * pow ((1.0-reflectDir), 5.0)
Angle value；
The Fresnel effect intensity level is multiplied with the initial reflection color and obtains final reflection colour；
Wherein, frenel is that Fresnel effect reflects item, and reflectDir is reflective vector, and pow is exponential function.
The present invention also provides a kind of system based on physical colored, including：
Pretreatment module, the ambient light texture sequence for reflecting item with micro- surface using the generation of environment maps piece；
First computing module, for according to the ambient light texture sequence, computing environment light texture；
Second computing module, is carried out for the HDR illumination using addition simulation to the ambient light texture
Contrast adjustment, obtains initial reflection color；
3rd computing module, for according to the initial reflection color, calculating final anti-using Fresnel effect reflection item
Penetrate color；
4th computing module, final lighting color is obtained for the final reflection colour to be added with diffusing reflection color.
Optionally, the pretreatment module, including：
Picture processing unit, for environment maps piece to be carried out into mirror image processing, and the picture after two mirror images is distinguished
Splicing forms texture picture in the environment maps piece left and right sides；
Gaussian filtering unit, for carrying out pre-determined number gaussian filtering process to the texture picture, generates corresponding height
This treatment texture picture；
Pyramid sampling unit, for carrying out pyramid resampling to whole Gausses treatment texture picture；
Ambient light texture sequence generating unit, for choosing the center presumptive area in the picture after resampling, generation one
Group is just to the ambient light texture sequence of different roughness.
Optionally, first computing module, including：
Coordinate calculating unit, for calculating reflective vector of the camera vector relative to surface normal, and calculates reflective vector
Corresponding environment texture coordinate；
Environment texture determining unit, for utilizing the ambient light texture sequence, is reflected towards according to the selection of material roughness
Measure corresponding environment texture；
Ambient light texture determining unit, for being sampled using the environment texture coordinate and the environment texture,
Obtain ambient light texture.
Optionally, second computing module, including：
Average color computing unit, the average color for calculating the ambient light texture and the environment texture；
Initial reflection color computing unit, for using the HDR illumination for adding simulation, adjusting described average
The contrast of color obtains initial reflection color.
Optionally, the 3rd computing module, including：
Fresnel effect Strength co-mputation unit, for using formula frenel+ (1.0-frenel) * pow ((1.0-
ReflectDir), Fresnel effect intensity level 5.0) is calculated；
Final reflection colour computing unit, for the Fresnel effect intensity level to be multiplied with the initial reflection color
Obtain final reflection colour；
Wherein, frenel is that Fresnel effect reflects item, and reflectDir is reflective vector, and pow is exponential function.
A kind of method based on physical colored provided by the present invention, including：Have using the generation of environment maps piece micro-
The ambient light texture sequence of item is reflected on surface；According to the ambient light texture sequence, computing environment light texture；Using adding mould
The HDR illumination of plan carries out contrast adjustment to the ambient light texture, obtains initial reflection color；According to institute
Initial reflection color is stated, final reflection colour is calculated using Fresnel effect reflection item；The final reflection colour is anti-with unrestrained
Penetrate color addition and obtain final lighting color；
It can be seen that, the method is by ambient light texture sequence reduction sampling number, the HDR light simulated using addition
Texture cell quantity is reduced according to item, accelerates the simulation of HDR illumination；Therefore, it is possible to improve the light based on physical colored
According to the efficiency of model, rendering efficiency is improve, allow it that popularization is realized on the mobile platforms such as mobile phone；Present invention also offers
A kind of system based on physical colored, with above-mentioned beneficial effect, will not be repeated here.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
The flow chart of the method based on physical colored that Fig. 1 is provided by the embodiment of the present invention；
The flow chart of the build environment light texture sequence that Fig. 2 is provided by the embodiment of the present invention；
The structured flowchart of the system based on physical colored that Fig. 3 is provided by the embodiment of the present invention.
Specific embodiment
Core of the invention is to provide a kind of method and system based on physical colored, improves the illumination based on physical colored
The efficiency of model, improves rendering efficiency, allows it that popularization is realized on the mobile platforms such as mobile phone.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Due to mobile platform because its hardware computing capability etc. is limited so that the illumination model for being currently based on physical colored exists
Operation on mobile platform occurs less efficient shortcoming, so as to cause the illumination model based on physical colored to be moved in mobile phone etc.
Do not popularized also on moving platform.The present embodiment proposes a kind of efficient solutions based on physical colored, is to enter in mobile platform
Row high-quality is rendered and provided the foundation.Specifically refer to Fig. 1, Fig. 1 by the embodiment of the present invention provide based on physical colored
The flow chart of method；The method can include：
S100, the ambient light texture sequence for reflecting item with micro- surface using the generation of environment maps piece；
Specifically, because the structure of traditional micro- surface reflection item needs repeatedly to adopt environment light source on each point
Sample；Such sampling process is obviously not particularly suited on hardware foundation as mobile platform.Therefore, the present embodiment is in order to improve
The acquisition speed of the ambient light texture of micro- surface reflection item, using previously generating the ambient light texture with micro- surface reflection item
Scheme, sampling number is reduced to once, so as to improve efficiency.
Wherein, preprocessing environment texture process can be：Roughness different grades of from low to high is pre-defined, per one-level
One environment texture of coarse correspondence, the mirror image processing of left and right edges is carried out to environment texture, has three in the environment texture for obtaining
Environment texture arranged side by side, the environment texture of left and right two is respectively the mirror image of intermediate grain.Environment texture to different roughness enters
Row gaussian filtering, then carries out pyramid resampling.Cut out from environment texture centre part, finally give one group it is just right
The environment texture sequence of different roughness.
It is i.e. optional, Fig. 2 is refer to, the detailed process of the step can be：
S200, environment maps piece is carried out mirror image processing, and the picture after two mirror images is spliced in environment line respectively
The reason picture left and right sides, forms texture picture；
Wherein, on the environment maps piece left side, a splicing is in environment texture for two mirror image pictures here, one splicing
Picture the right.
S210, pre-determined number gaussian filtering process is carried out to the texture picture, generate corresponding Gauss treatment texture maps
Piece；
S220, to whole Gausses treatment texture picture carry out pyramid resampling；
S230, the center presumptive area chosen in the picture after resampling, one group of generation is just to the environment of different roughness
Light texture sequence.
Wherein, the pre-determined number in the present embodiment not to gaussian filtering process is defined, and ordinary circumstance is carried out 10 times
Gaussian filtering process.Center presumptive area refer to intercept resampling after picture in middle position as center fate
Domain.The present embodiment does not limit the size and shape of center presumptive area.In the middle of picture 1/3 area can generally be intercepted
Domain is used as center presumptive area.According to the center presumptive area as the final environment texture of the picture.One group for ultimately generating
Ambient light texture Ring in Sequence border light texture quantity just to different roughness is corresponding with pre-determined number.
Specifically, illustrating above-mentioned processing procedure as a example by using the panorama environment maps piece of 1024*512 as raw data
(wherein, the process is implemented on iphone platforms by openGL)：
Panorama environment maps piece using 1024*512 splices in original image or so two as raw data, after mirror image
Side, generates the texture picture of 3072*512.Texture picture to 3072*512 carries out 10 gaussian filtering process, Gauss nuclear radius
It is incremented by from 0.5 pixel to 50 pixels, generates 10 texture pictures.10 pictures are carried out with pyramid from sampling, resolution ratio is obtained
10 pictures successively decreased from 3072*512 to 48*8.1/3 region is used as final environment texture in the middle of interception picture, most throughout one's life
Into one group just to the environment texture sequence of different roughness.
S110, according to the ambient light texture sequence, computing environment light texture；
Specifically, selecting nearest environment texture (namely ambient light texture) according to roughness, you can with according to ambient light
Texture sequence determines the environment texture of each roughness, and the environment texture on reflection light direction is sampled, and obtains projection flat
The original lighting color (spec) of a pixel is ambient light texture on face.
Optionally, according to the ambient light texture sequence, computing environment light texture can include：
Reflective vector of the camera vector relative to surface normal is calculated, and calculates the corresponding environment texture of reflective vector and sat
Mark；
Using the ambient light texture sequence, the corresponding environment texture of reflective vector is selected according to material roughness；
Sampled using the environment texture coordinate and the environment texture, obtained ambient light texture.
Specifically, illustrating above-mentioned processing procedure as a example by using the panorama environment maps piece of 1024*512 as raw data
(wherein, the process is implemented on iphone platforms by openGL)：
Reflective vector (reflectDir) of the camera vector relative to surface normal is calculated, the corresponding ring of reflective vector is calculated
Border texture coordinate.Corresponding environment texture is selected according to material roughness.Sampled according to texture coordinate and environment texture, obtained
An original lighting color (spec) for pixel on to projection plane.
S120, the HDR illumination (hdr) simulated using addition carry out contrast to the ambient light texture
Regulation, obtains initial reflection color；
Specifically, to use half floating point type conduct of 16, single passage due to traditional HDR illumination texture
Texture cell.Because the scheme in the present embodiment will on a mobile platform realize texture therefore using 8, contrasted by adjusting
Spend to simulate HDR illumination.Result to step S110 carries out contrast adjustment.
Optionally, contrast tune is carried out to the ambient light texture using the HDR illumination of addition simulation
Section, obtaining initial reflection color can include：
Calculate the average color of the ambient light texture and the environment texture；
Using the HDR illumination for adding simulation, the contrast for adjusting the average color obtains initial reflection face
Color.
Specifically, illustrating above-mentioned processing procedure as a example by using the panorama environment maps piece of 1024*512 as raw data
(wherein, the process is implemented on iphone platforms by openGL)：
The average color of result and environment texture according to step S110, regulation contrast, simulates hdr effects, obtains result
(hdrSpec)。
S130, according to the initial reflection color, calculate final reflection colour using Fresnel effect reflection item；
Specifically, being needed to carrying out model structure for different physics materials because traditional Fresnel effect reflection item builds
Build；The present embodiment can preferably use a multinomial to simplify the model of Fresnel effect to further improve rendering efficiency
Result to step S120 is processed, and obtains final reflection colour.
Preferably, according to the initial reflection color, calculating final reflection colour using Fresnel effect reflection item can be with
Including：
It is strong Fresnel effect to be calculated using formula frenel+ (1.0-frenel) * pow ((1.0-reflectDir), 5.0)
Angle value；Wherein, frenel is that Fresnel effect reflects item, and reflectDir is reflective vector, and pow is exponential function, pow (x,
Y) the y powers of x are represented.
The Fresnel effect intensity level is multiplied with the initial reflection color and obtains final reflection colour.
Specifically, calculating Fresnel effect intensity according to Fresnel intensity and reflective vector：frenel+(1.0-
Frenel) * pow ((1.0-reflectDir), 5.0).By the product of Fresnel effect intensity and the result of step S120 for most
Whole reflection colour.
S140, the final reflection colour is added with diffusing reflection color obtains final lighting color.
Based on above-mentioned technical proposal, the method based on physical colored that the embodiment of the present invention is carried, by ambient light texture sequence
Row reduce sampling number, using adding the HDR illumination of simulation to reduce texture cell quantity, accelerate HDR
The simulation of illumination, the model for simplifying Fresnel effect using multinomial calculates final reflection colour, realizes multiple rendering efficiency
Lifting；Therefore, it is possible to improve the efficiency of the illumination model based on physical colored, rendering efficiency is improve, allow it in mobile phone
Deng realizing popularization on mobile platform.
The system based on physical colored provided in an embodiment of the present invention is introduced below, it is described below based on physics
The system of coloring can be mutually to should refer to the above-described method based on physical colored.
Refer to Fig. 3, the structured flowchart of the system based on physical colored that Fig. 3 is provided by the embodiment of the present invention；This is
System can include：
Pretreatment module 100, the ambient light texture sequence for reflecting item with micro- surface using the generation of environment maps piece
Row；
First computing module 200, for according to the ambient light texture sequence, computing environment light texture；
Second computing module 300, for the HDR illumination using addition simulation to the ambient light texture
Contrast adjustment is carried out, initial reflection color is obtained；
3rd computing module 400, for according to the initial reflection color, calculating final using Fresnel effect reflection item
Reflection colour；
4th computing module 500, obtains final light and shines face for the final reflection colour to be added with diffusing reflection color
Color.
Based on above-described embodiment, the pretreatment module 100 can include：
Picture processing unit, for environment maps piece to be carried out into mirror image processing, and the picture after two mirror images is distinguished
Splicing forms texture picture in the environment maps piece left and right sides；
Gaussian filtering unit, for carrying out pre-determined number gaussian filtering process to the texture picture, generates corresponding height
This treatment texture picture；
Pyramid sampling unit, for carrying out pyramid resampling to whole Gausses treatment texture picture；
Ambient light texture sequence generating unit, for choosing the center presumptive area in the picture after resampling, generation one
Group is just to the ambient light texture sequence of different roughness.
Based on above-mentioned any embodiment, first computing module 200 can include：
Coordinate calculating unit, for calculating reflective vector of the camera vector relative to surface normal, and calculates reflective vector
Corresponding environment texture coordinate；
Environment texture determining unit, for utilizing the ambient light texture sequence, is reflected towards according to the selection of material roughness
Measure corresponding environment texture；
Ambient light texture determining unit, for being sampled using the environment texture coordinate and the environment texture,
Obtain ambient light texture.
Based on above-mentioned any embodiment, second computing module 300 can include：
Average color computing unit, the average color for calculating the ambient light texture and the environment texture；
Initial reflection color computing unit, for using the HDR illumination for adding simulation, adjusting described average
The contrast of color obtains initial reflection color.
Based on above-mentioned any embodiment, the 3rd computing module 400 can include：
Fresnel effect Strength co-mputation unit, for using formula frenel+ (1.0-frenel) * pow ((1.0-
ReflectDir), Fresnel effect intensity level 5.0) is calculated；Wherein, frenel is that Fresnel effect reflects item, reflectDir
It is reflective vector, pow is exponential function.
Final reflection colour computing unit, for the Fresnel effect intensity level to be multiplied with the initial reflection color
Obtain final reflection colour.
Each embodiment is described by the way of progressive in specification, and what each embodiment was stressed is and other realities
Apply the difference of example, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
Speech, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part illustration
.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
The step of method or algorithm for being described with reference to the embodiments described herein, directly can be held with hardware, processor
Capable software module, or the two combination is implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In field in known any other form of storage medium.
A kind of method and system based on physical colored provided by the present invention are described in detail above.Herein
Apply specific case to be set forth principle of the invention and implementation method, the explanation of above example is only intended to help
Understand the method for the present invention and its core concept.It should be pointed out that for those skilled in the art, not taking off
On the premise of the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this
In invention scope of the claims.
Claims (10)
1. a kind of method based on physical colored, it is characterised in that including：
The ambient light texture sequence of item is reflected with micro- surface using the generation of environment maps piece；
According to the ambient light texture sequence, computing environment light texture；
Using adding the HDR illumination of simulation to carry out contrast adjustment to the ambient light texture, obtain initial anti-
Penetrate color；
According to the initial reflection color, final reflection colour is calculated using Fresnel effect reflection item；
The final reflection colour is added with diffusing reflection color and obtains final lighting color.
2. method according to claim 1, it is characterised in that using the generation of environment maps piece there is micro- surface to reflect item
Ambient light texture sequence, including：
Environment maps piece is carried out into mirror image processing, and the picture after two mirror images is spliced in environment maps piece or so respectively
Both sides, form texture picture；
Pre-determined number gaussian filtering process is carried out to the texture picture, corresponding Gauss treatment texture picture is generated；
Pyramid resampling is carried out to whole Gausses treatment texture picture；
The center presumptive area in the picture after resampling is chosen, one group of generation is just to the ambient light texture sequence of different roughness
Row.
3. method according to claim 2, it is characterised in that according to the ambient light texture sequence, computing environment light line
Reason item, including：
Reflective vector of the camera vector relative to surface normal is calculated, and calculates the corresponding environment texture coordinate of reflective vector；
Using the ambient light texture sequence, the corresponding environment texture of reflective vector is selected according to material roughness；
Sampled using the environment texture coordinate and the environment texture, obtained ambient light texture.
4. method according to claim 3, it is characterised in that using adding the HDR illumination of simulation to described
Ambient light texture carries out contrast adjustment, obtains initial reflection color, including：
Calculate the average color of the ambient light texture and the environment texture；
Using the HDR illumination for adding simulation, the contrast for adjusting the average color obtains initial reflection color.
5. method according to claim 4, it is characterised in that according to the initial reflection color, using Fresnel effect
Reflection item calculates final reflection colour, including：
Fresnel effect intensity is calculated using formula frenel+ (1.0-frenel) * pow ((1.0-reflectDir), 5.0)
Value；
The Fresnel effect intensity level is multiplied with the initial reflection color and obtains final reflection colour；
Wherein, frenel is that Fresnel effect reflects item, and reflectDir is reflective vector, and pow is exponential function.
6. a kind of system based on physical colored, it is characterised in that including：
Pretreatment module, the ambient light texture sequence for reflecting item with micro- surface using the generation of environment maps piece；
First computing module, for according to the ambient light texture sequence, computing environment light texture；
Second computing module, contrasts for the HDR illumination using addition simulation to the ambient light texture
Degree regulation, obtains initial reflection color；
3rd computing module, for according to the initial reflection color, final reflection face being calculated using Fresnel effect reflection item
Color；
4th computing module, final lighting color is obtained for the final reflection colour to be added with diffusing reflection color.
7. system according to claim 6, it is characterised in that the pretreatment module, including：
Picture processing unit, for environment maps piece to be carried out into mirror image processing, and the picture after two mirror images is spliced respectively
In the environment maps piece left and right sides, texture picture is formed；
Gaussian filtering unit, for carrying out pre-determined number gaussian filtering process to the texture picture, generates at corresponding Gauss
Reason texture picture；
Pyramid sampling unit, for carrying out pyramid resampling to whole Gausses treatment texture picture；
Ambient light texture sequence generating unit, for choosing the center presumptive area in the picture after resampling, one group of generation is just
To the ambient light texture sequence of different roughness.
8. system according to claim 7, it is characterised in that first computing module, including：
Coordinate calculating unit, for calculating reflective vector of the camera vector relative to surface normal, and calculates reflective vector correspondence
Environment texture coordinate；
Environment texture determining unit, for utilizing the ambient light texture sequence, reflective vector pair is selected according to material roughness
The environment texture answered；
Ambient light texture determining unit, for being sampled using the environment texture coordinate and the environment texture, is obtained
Ambient light texture.
9. system according to claim 8, it is characterised in that second computing module, including：
Average color computing unit, the average color for calculating the ambient light texture and the environment texture；
Initial reflection color computing unit, for using the HDR illumination for adding simulation, adjusting the average color
Contrast obtain initial reflection color.
10. system according to claim 9, it is characterised in that the 3rd computing module, including：
Fresnel effect Strength co-mputation unit, for using formula frenel+ (1.0-frenel) * pow ((1.0-
ReflectDir), Fresnel effect intensity level 5.0) is calculated；
Final reflection colour computing unit, obtains for the Fresnel effect intensity level to be multiplied with the initial reflection color
Final reflection colour；
Wherein, frenel is that Fresnel effect reflects item, and reflectDir is reflective vector, and pow is exponential function.
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| CN110136213A (en) * | 2019-04-26 | 2019-08-16 | 电子科技大学 | A kind of visible light panorama identification involvement system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644453A (en) * | 2017-08-31 | 2018-01-30 | 成都通甲优博科技有限责任公司 | A kind of rendering intent and system based on physical colored |
| CN107644453B (en) * | 2017-08-31 | 2021-05-14 | 成都通甲优博科技有限责任公司 | Rendering method and system based on physical coloring |
| CN110136213A (en) * | 2019-04-26 | 2019-08-16 | 电子科技大学 | A kind of visible light panorama identification involvement system and method |
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