I have written a research paper in image processing that I will be submitting to an IEEE conference. I have proposed a new method to detect 'X' in images. However, due to hardware failure I could acquire only 4 sets of images. Thus, I have applied my method only on 4 images and I have also compared the results of previous two methods in literature by applying them to the same 4 images. The results obtained by my method are much better.
My question is, is it OK if I submit the paper showing results only on 4 images? The previous two papers have demonstrated their method on around 10 images or less. Also, is it OK to quantitatively compare the results (accuracy in percent) with just four images?