how can i show my hyperspectral data in a two dimensional projection of hyperspectral cube?

2 次查看（过去 30 天）

asmaa elyamany 2020-6-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/552961-how-can-i-show-my-hyperspectral-data-in-a-two-dimensional-projection-of-hyperspectral-cube

回答： millercommamatt 2020-7-2

i have a hyperspectral data in a .m file it is 984*740*224 how can i show it in a two dimensional projection of hyperspectral cube?

5 个评论
显示 3更早的评论隐藏 3更早的评论

asmaa elyamany 2020-6-23

i used the VolumeViewer3D in the medical image viewer but it didn't view the image in a cube and it was somehow in greyscale but my data supose to be colorful

Rik 2020-6-23

There are bound to be viewers that show the 3 directions and allow you to set a colormap to your liking.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

millercommamatt 2020-6-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/552961-how-can-i-show-my-hyperspectral-data-in-a-two-dimensional-projection-of-hyperspectral-cube#answer_455611

编辑：millercommamatt 2020-6-23

在 MATLAB Online 中打开

If your data is something like (x,y,spectra), you could try:

imagesc(your_data(:,:,1));

If your data is like (spectra, x, y) you could try:

imagesc(squeeze(your_data(10,:,:)));

11 个评论
显示 9更早的评论隐藏 9更早的评论

millercommamatt 2020-6-29

在 MATLAB Online 中打开

We just need to switch what's being labeled as x and y in the code I gave you remember that matlab uses row-major dimension ordering.

[Ydim,Xdim,Spectra_dim]=size(your_data);%should be Ydim = 984, Xdim=740, Spectra_dim=224.
[X Y Spectra]=meshgrid(1:Xdim,1:Ydim,1:Spectra_dim);%each array shoudl be 984x740x224
figure;
surf(squeeze(X(1,:,:)),squeeze(Y(1,:,:)),squeeze(Spectra(1,:,:)),squeeze(your_data(1,:,:)),'EdgeColor','none');
hold on;
surf(squeeze(X(end,:,:)),squeeze(Y(end,:,:)),squeeze(Spectra(end,:,:)),squeeze(your_data(end,:,:)),'EdgeColor','none');
surf(squeeze(X(:,1,:)),squeeze(Y(:,1,:)),squeeze(Spectra(:,1,:)),squeeze(your_data(:,1,:)),'EdgeColor','none');
surf(squeeze(X(:,end,:)),squeeze(Y(:,end,:)),squeeze(Spectra(:,end,:)),squeeze(your_data(:,end,:)),'EdgeColor','none');
surf(squeeze(X(:,:,1)),squeeze(Y(:,:,1)),squeeze(Spectra(:,:,1)),squeeze(your_data(:,:,1)),'EdgeColor','none');
surf(squeeze(X(:,:,end)),squeeze(Y(:,:,end)),squeeze(Spectra(:,:,end)),squeeze(your_data(:,:,end)),'EdgeColor','none');

asmaa elyamany 2020-7-2

the code is very helpful but the image displayed is blue while i want it to be coloful and may i ask you how to ratate it to make the image in the front not in the top

请先登录，再进行评论。

更多回答（1 个）

millercommamatt 2020-7-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/552961-how-can-i-show-my-hyperspectral-data-in-a-two-dimensional-projection-of-hyperspectral-cube#answer_460105

To control the orientation of the image, read the documentation for 3-D camera control:

https://www.mathworks.com/help/matlab/views.html

Specifically read the documentation for view:

https://www.mathworks.com/help/matlab/ref/view.html

There's also a button in the graphic windows to manually orbit the camera around.

As for the color, please study the documentation for colormap and caxis

https://www.mathworks.com/help/matlab/ref/colormap.html

https://www.mathworks.com/help/matlab/ref/caxis.html

As always when reading the documentation, pay attention to links to other function and the see also section to see related functions. Following these links will lead you to examples of related tasks and provide a broader view of the tools you have at your disposal.