An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Recognition of chemical structure diagram images in ChemReader. (a) input image, (b) character-line separation, (c) bond recognition, (d) character recognition, and (e) topology construction and data output.