Shiro has been working on the signal processing pipelines used in the recent first image of a black hole shadow.
Last April, the EHT (Event Horizon Telescope) collaboration released
the first image of the M87 black hole shadow. EHT is a huge VLBI (very
long baseline interferometer) and an inverse problem must be solved in
order to have an image. We have developed a new imaging method for EHT
and it is one of the three methods which contributed to the released
image. In this talk, I explain how the method has been developed and
the final image was created.