Activity 8-Enhancement in the Frequency Domain

Enhancement in the Frequency Domain

Masking the frequencies of the image in the Fourier domain is one way to remove undesired repetitive patterns in an image. This can also be done to improve the quality of an image if the desired frequencies are enhanced. Filter masks are used to be able to do this.

Figure 1. Two Symmetric dots generated using Scilab

  

  Figure 3. Two Symmetric circles with a small radius generated using Scilab  

  Figure 5. Two Symmetric circles with  a medium radius generated using Scilab

 

 

  Figure 7. Two Symmetric circles with  a large radius generated using Scilab  

  Figure 7. Two small symmetric squares generated using Scilab  

    Figure 7. Two medium-sized symmetric squares generated using Scilab  

    Figure 7. Two large symmetric squares generated using Scilab