  Computational ghost imaging needs to acquire a large number of correlated
measurements between reference patterns and the scene for reconstruction, so
extremely high acquisition speed is crucial for fast ghost imaging. With the
development of technologies, high frequency illumination and detectors are both
available, but their synchronization needs technique demanding customization
and lacks flexibility for different setup configurations. This letter proposes
a self-synchronization scheme that can eliminate this difficulty by introducing
a high precision synchronization technique and corresponding algorithm. We
physically implement the proposed scheme using a 20kHz spatial light modulator
to generate random binary patterns together with a 100 times faster photodiode
for high speed ghost imaging, and the acquisition frequency is around 14 times
faster than that of state-of-the-arts.
