maxima of intensity using a Laplacian operator. In the image, the Laplacian-based edge detection operator points out the geometrical centers of the bright dots ...

https://books.google.com/books?id=G4j8lJboOHkC&pg=PA455&lpg=PA455&dq=laplace+operator+edge+detection+gravity&source=bl&ots=KIOzyd7yU0&sig=kg522gkJXaZ4GOZ-Tkihra3cvTQ&hl=en&sa=X&ved=0ahUKEwjo5Y6tg-nLAhVE_WMKHZliCAQQ6AEIWjAJ#v=onepage&q=laplace%20operator%20edge%20detection%20gravity&f=false

Nitride Semiconductors: Handbook on Materials and Devices

Nitride Semiconductors: Handbook on Materials and Devices

https://books.google.com/books?isbn=3527607404

Pierre Ruterana, ‎Martin Albrecht, ‎Jörg Neugebauer - 2006 - ‎Science

In contrast, the pixel of maximum intensity can be far from the center of the ... edge detection operator points out the geometrical centers of the bright dots ..