This Application can be downloaded directly from the below link.
https://ftp.dot.state.oh.us/pub/CADD/CADDSync/OHDOTCEv02/Standards/Applications/SignatureImageCreator.exe
It can also be found within the OHDOTCEv02 workspace ..\OHDOTCEv02\Standards\Applications\SignatureImageCreator.exe
The video below demonstrates how to use the application.
https://youtu.be/feTaGztG8AE