  Multi-stain whole-slide-image (WSI) registration is an active field of
research. It is unclear, however, how the current WSI registration methods
would perform on a real-world data set. AutomatiC Registration Of Breast cAncer
Tissue (ACROBAT) challenge is held to verify the performance of the current WSI
registration methods by using a new dataset that originates from routine
diagnostics to assess real-world applicability. In this report, we present our
solution for the ACROBAT challenge. We employ a two-step approach including
rigid and non-rigid transforms. The experimental results show that the median
90th percentile is 1,250 um for the validation dataset.
