theveryhim / Preliminary-Image-Processing

Getting acquainted with image processing and denoising

Preliminary Image Processing

Here we prform basic operations on a sample image
Further analysis are provided in notebook!

Mirror

Rotation

Rotate, rotate back and compare!

Mean Squared Error between original & restored: 45.9735107421875
Mean Absolute Error between original & restored: 68.29672813415527

Fourier transform

Apply non-linear transformation for better visualization of magnitude

Replace magnitude/phase randomly uniform

phase has it all!

Filtering

Applying low-band-high pass filter

Interpolation

Zero even rows and columns out

Interpolation: Bicubic

PSNR between original and reconstructed image: 31.61 dB