图像增强处理的基础知识，涉及频域和空域，利用matlab完成-The basics of image enhancement processing, involving the frequency and spatial use of matlab completed

This a simple, yet useful Bloch equation simulator that runs in Matlab. It is written as a MEX function so that it can run reasonably quickly, and simulate RF and a 1D gradient waveform. Simulations can be run for a range of spatial offsets and frequ