Best tools for calling structural variants from 2 assemblies?

Question

[changxu.fan]

Dear community,

I have the fasta files of 2 assemblies of the human genome (for example hg19 and hg38). What would be the best tools to call structural variants from these 2 fasta files? Most of the tools I know are designed to call variants using shot-gun sequencing reads...

Thanks in advance~