I am studying the dynamics (fast) moving droplets. On the microscope, they appear as dark rings. Prior to do the tracking, I obviously need to detect the droplets.
I would like to precisely and efficiently (especially in terms of computation time, and if possible CPU-GPU-RAM ressources) detect the position and measure the size of these droplets.
I am using Matlab, and so far I have been using imfindcircle. The issue is that it does allow one to measure sizes smaller than 5 pixels, nor does it allow subpixel measurement of the size of the particles.
Also, it does not seem to be very fast to compute, and I was thinking of maybe finding a better way using GPU for instance…?
Does anyone know something that could fit my needs?
an example for one of the image I am dealing with is attached here (it is on 16bits):
PS: last, I am really new to Fourier decomposition for image processing, but would it allow for location detection? I am guessing not, but I’d rather ask…