How can amplitude of an image pixel be calculated?Do we need to perform any FFT on the image? and how to find the brightest value among the amplitudes in python or matlab?
A discretized amplitude is directly obtained by the numerical value of an intensity attached to the pixel location. The brightest would the maximum intensity over the whole picture. It seems that in Python with
numpy you get gt it as:
brightest = numpy.amax(imageData)
and in Matlab
brightest = max(imageData(:))