| Image Processing Toolbox |
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Linear Filtering and Transforms
Linear Filtering
conv2
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Perform 2-D convolution. (This is a MATLAB function.)
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convmtx2
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Compute 2-D convolution matrix
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convn
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Perform N-D convolution. (This is a MATLAB function.)
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filter2
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Perform 2-D filtering. (This is a MATLAB function.)
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fspecial
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Create predefined filters
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imfilter
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Multidimensional image filtering
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Linear 2-D Filter Design
freqspace
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Determine 2-D frequency response spacing. (This is a MATLAB function.)
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freqz2
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Compute 2-D frequency response
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fsamp2
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Design 2-D FIR filter using frequency sampling
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ftrans2
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Design 2-D FIR filter using frequency transformation
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fwind1
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Design 2-D FIR filter using 1-D window method
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fwind2
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Design 2-D FIR filter using 2-D window method
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Image Transforms
dct2
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Compute 2-D discrete cosine transform
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dctmtx
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Compute discrete cosine transform matrix
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fft2
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Compute 2-D fast Fourier transform. (This is a MATLAB function.)
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fftn
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Compute N-D fast Fourier transform. (This is a MATLAB function.)
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fftshift
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Reverse quadrants of output of FFT. (This is a MATLAB function.)
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idct2
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Compute 2-D inverse discrete cosine transform
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ifft2
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Compute 2-D inverse fast Fourier transform. (This is a MATLAB function.)
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ifftn
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Compute N-D inverse fast Fourier transform. (This is a MATLAB function.)
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iradon
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Compute inverse Radon transform
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phantom
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Generate a head phantom image
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radon
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Compute Radon transform
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| | Image Enhancement and Restoration | | Morphological Operations | |