Combine a model and a matrix/picture - MATLAB爱好者论坛-LabFans.com

poster · 2019-11-25, 20:00

I have a question about using Matlab. I have loaded a CAD model of a blade into Matlab as a *.stl file. By using alphashape, I got all the points of the surface of the model. Now, I would like to map an image on the suction side of the airfoil (red marked in the section picture). The image, which I want to map is created from a matrix (640x512) by using the imagesc function. Each value of the matrix represents the temperature of the pixel (some kind of temperature plot).
Does anybody now, how I can do that? I thought about using the Texture Mapping function of Matlab, but I did not manage it. Another idea is to refer the value of each pixel to the points of the surface and to colour them afterwards, but I do not know, how to do that in an effective way because there are many points of the surface, which are not important and I did not find a good way to sort the points so that it would be easier. I tried to find some information on the internet, but have not found any good idea, yet (except Texture Mapping).

Picture 1 - Blade

Picture 2 - important part of the surface

2019-11-25, 20:00	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	Combine a model and a matrix/picture I have a question about using Matlab. I have loaded a CAD model of a blade into Matlab as a *.stl file. By using alphashape, I got all the points of the surface of the model. Now, I would like to map an image on the suction side of the airfoil (red marked in the section picture). The image, which I want to map is created from a matrix (640x512) by using the imagesc function. Each value of the matrix represents the temperature of the pixel (some kind of temperature plot). Does anybody now, how I can do that? I thought about using the Texture Mapping function of Matlab, but I did not manage it. Another idea is to refer the value of each pixel to the points of the surface and to colour them afterwards, but I do not know, how to do that in an effective way because there are many points of the surface, which are not important and I did not find a good way to sort the points so that it would be easier. I tried to find some information on the internet, but have not found any good idea, yet (except Texture Mapping). Picture 1 - Blade Picture 2 - important part of the surface More answer...