Simulate real camera capturing process

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Humam Helfawi 2019-2-9

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https://ww2.mathworks.cn/matlabcentral/answers/444037-simulate-real-camera-capturing-process

回答： George Abrahams 2024-2-10

Hi,

I have an 3D object (stl, ply...). I want to simulate camera 2d capturing of the the object from spesefic perspective. I need to try this with variouse lenses (focal lengthes) and vaouise sensors (width, height, resolution). Is there any ready toolbox for this in MATALB?

Thansk!

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Answer 1

Image Analyst 2019-2-9

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https://ww2.mathworks.cn/matlabcentral/answers/444037-simulate-real-camera-capturing-process#answer_360273

Try view() to change your camera viewpoint, followed by getimage() or getframe() to extract the newly rendered image.

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Humam Helfawi 2019-2-27

Thanks for your answer! I ended up using camva, campos, camtarget, and https://github.com/altmany/export_fig library

Sandeep 2020-3-9

Can you please let us know the detailed procedure of using camva, campos and camtarget and that library for simulating real camera capturing process ?

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Answer 2

George Abrahams 2024-2-10

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For anyone else landing on this page with a similar question, the issue with getframe is that you can't control the sensor resolution. So, if that's important to you, the only approach using the MATLAB camera is to do something hacky, like varying the size of the figure and/or the DPI of the output with exportgraphics until you get the resolution that you need.

The alternative is to use a renderer from File Exchange. I suggest my 3D rendering toolbox, if you don't need lighting, or possibly Patch Software Render, although I have no personal experience with it.