How to implement Bicubic interpolation in an image?

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Nidhi Soni
Nidhi Soni 2017-12-1
编辑： TheRealTonyStark 2019-10-13
I have 256*256 dimension image and I want to make it 512*512 using bicubic interpolation. How to do it using csapi(x,y) or csapi(x,y,xx) function? What should be taken inplace of x & y here?

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回答（2 个）

TheRealTonyStark
TheRealTonyStark 2019-10-13
编辑：TheRealTonyStark 2019-10-13
The resizing of image using bicubic interpolation method:
Example
J = imresize(I, 2, 'bicubic');%in your case
J: Resized image.
I: input image.
0.5: scaling factor
Image Analyst
Image Analyst 2017-12-1
Simply use imresize():
resizedImage = imresize(originalImage, [512, 512]);
I never heard of the function csapi(). It does not show up in the help for my MATLAB.
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Nidhi Soni
Nidhi Soni 2017-12-1
I am trying to apply DWT and BEMD on an image. Then adding these DWT and BEMD components but DWT components have reduced dimension than BEMD component, So I want to interpolate them.
TheRealTonyStark
TheRealTonyStark 2019-10-13
Increasing the size will create irreularities in the image. To smoothen that out we use spline fitting.

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