Coursework 2 (20% of final mark)

Coursework 2 (20% of final mark)

FFT of digital images, high and low pass filter, and orientation filter

-3524253460752495550346075Target image (original image as attached in email):

Figure 2

Figure 1

Q1. Figure 1 is a MRI image has strong artefacts. What will the raw (k-space) data look like that produced the diagonal banding in this image? (Not the horizontal lines). Please:

Perform orientation filter to delete the diagonal bandings.

Try the same method to filter the horizontal lines, what did you see?

Q2. Figure 2 is another MRI image with artefacts, from the conclusion from Q1, can you preform orientation filter to delete the vertical lines? Perform high pass and low pass filter to process this image, demonstrate the results and discuss these two methods, what do you see?