How to convert from 2D (RGB image) to 3D?

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Chathu
Chathu 2016-2-28
评论： Chathu 2016-2-28
I have a database of RGB, JPEG images where each image has a size of 1398 x 1611 x 3. Original images are in 2D. My intention is to build a 3D model from these images. Couple of questions came up to my mind while struggling with this issue:
1. I want to give the spacing to each slice.But how? (what i meant here is: to give the slice thickness(z direction),
calculate [real width of the image (mm)/image width (pixel)] (x direction),
[real height of the image (mm)/image height (pixel))] (y direction)
2. Then build a 3D model by stacking those 2D images. Does MatLab support 3D modeling? Atleast a 3D mesh would be fine.
Can anyone help me with this? I really appreciate any help.

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Image Analyst
Image Analyst 2016-2-28
A color image is #D already. Two lateral dimensions and then the third dimension for the 3 different color planes. To make a stack of these, you'd need a 4D array.
MATLAB does not have great 3D volume visualization. You're pretty much limited to cutaway views and isosurfaces. To get true volume visualization you'd have to use a program like Avizo.
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Image Analyst
Image Analyst 2016-2-28
Yes, you can have a spatial calibration factor for any of the 3 spatial dimensions to convert indexes (voxels) into real world units such as cm or mm or whatever.
Chathu
Chathu 2016-2-28
Thank you so much for your prompt response Image Analyst. Really appreciate it.

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