plot 3d object from an 2d image

Hi, I desire to plot a 3d object from an 2d image, for example, an 2d image contain a square (20X20), i desired to extend the shape to 3d (20x20x10). After construct, the image should able to view by the command "view(45,60);"

Answer 1

[Walter Roberson]

image_as_3D = repmat(image_as_2D, 1, 1, 10);

You will need to show us an example of what you want the plot to look like.

[Soon Fei Fong]

The attached code is how i plot the 3d car model. But each line need to draw manually and ugly, so now i desired to use an 2d image, then extend it to 3d.

[Walter Roberson]

The code did not get attached. Be sure to click on Attach File after selecting the file.

[Soon Fei Fong]

attached code

[Walter Roberson]

When you say you want to start with a 2d image do you mean like a .tif file? If so please attach a sample.

[Soon Fei Fong]

no, image like png/jpg/bmp. This is the attached image.

[Walter Roberson]

That is just a square? I thought you meant something like a picture of an automobile taken from the top.

[Soon Fei Fong]

to simply, i just test with square, this is the car image.

[Walter Roberson]

If I understand correctly, you want to be able to click on a part of the image, have the program figure out what else in the image is part of the same structure, and then you want to be able to stretch that object into the third dimension using some as-yet-unstated method to indicate how large you want it? With the program having to be able to figure out continuity to know for example that the horizontal line crossing the circles indicates that the body of the car is straight across and that the circles are complete circles that are "behind" the transparent body of the car?

I think that these days people who want to do this kind of task use a dedicated CAD tool that has these kinds of facilities built in. And if they were modeling an existing object that they would use one or more stereo images to extract depth information, or they would use a 3D scanner or tool such as a Kinect

[Soon Fei Fong]

hi, sorry that my question is unclear, but what is to display an array like 256x256x4 (contain pixel value). Just like imshow in 2d image.