I have been using Fourier Transform Power Spectrum for estimating the dominant direction in some images.
However, I am now working on extremely small images of size 8X8 pixel and I have found that even at this level there is some result regarding the dominant orientation of the image. As the image size is 8X8, the total number of pixel will be 64 and as shown in the figure below, there will be less number of angles.
I have simply done polar conversion of the Fourier Transform Power Spectrum of the image which will be of same size (8X8), then I have taken the summation of the intensity for each angle and plotted them against the angle.
Now, from the plot I can find the maximum angle but I want to increase the accuracy of my result. I will first find the dominant direction of an image (a medical image) and then I will find the changes in the diseased state.
Thank you so much for your help.