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I was wondering is there a way(some code or functions) to convert an image with specific number of pixels into a picture with more pixels in matlab(enlarging the size or the number of the picture)?

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    $\begingroup$ Welcome to DSP.SE! This question is basically an RTFM question, which is off topic for this forum. $\endgroup$
    – Peter K. ♦
    Nov 4, 2015 at 17:09

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If you have the Image Processing Toolbox then you might want to use the imresize function. It allows you to choose various interpolation algorithms. Help is very clear on that.

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Yes, you can use imread to get the image values, interp2 for the interpolation, and imwrite to make a new file. Pay attention to data format and scaling. Read the docs for these 3 functions and you should be ok

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  • $\begingroup$ @jojek good point $\endgroup$
    – johnnymopo
    Nov 4, 2015 at 17:52

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