| Image Processing Toolbox User's Guide | |
Linear Filtering and Transforms
Linear Filtering
conv2 |
Perform 2-D convolution (MATLAB function) |
convmtx2 |
Compute 2-D convolution matrix |
convn |
Perform N-D convolution (MATLAB function) |
filter2 |
Perform 2-D filtering (MATLAB function) |
fspecial |
Create predefined filters |
imfilter |
Multidimensional image filtering |
Linear 2-D Filter Design
freqspace |
Determine 2-D frequency response spacing (MATLAB function.) |
freqz2 |
Compute 2-D frequency response |
fsamp2 |
Design 2-D FIR filter using frequency sampling |
ftrans2 |
Design 2-D FIR filter using frequency transformation |
fwind1 |
Design 2-D FIR filter using 1-D window method |
fwind2 |
Design 2-D FIR filter using 2-D window method |
Image Transforms
dct2 |
Compute 2-D discrete cosine transform |
dctmtx |
Compute discrete cosine transform matrix |
fan2para |
Convert fan-beam projection data to parallel-beam |
fanbeam |
Compute fan-beam transform |
fft2 |
Compute 2-D fast Fourier transform (MATLAB function) |
fftn |
Compute N-D fast Fourier transform (MATLAB function) |
fftshift |
Reverse quadrants of output of FFT (MATLAB function) |
idct2 |
Compute 2-D inverse discrete cosine transform |
ifft2 |
Compute 2-D inverse fast Fourier transform (MATLAB function) |
ifftn |
Compute N-D inverse fast Fourier transform (MATLAB function) |
ifanbeam |
Compute inverse fan-beam transform |
iradon |
Compute inverse Radon transform |
para2fan |
Convert parallel-beam projections to fan-beam |
phantom |
Generate a head phantom image |
radon |
Compute Radon transform |
| | Image Enhancement and Restoration | Morphological Operations | |
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