Talk:A-level Physics (Advancing Physics)/Digital Processing

Please could someone add edge detection to this page? I don't understand how the Laplace kernel works. --Sjlegg (talk) 18:35, 24 December 2007 (UTC)

The pixels at the edge of the array cannot be changed by the processing because they are not at the centre of a 3x3 section. Edge pixels remain unchanged - try doing mean or median processing in Scion Image it also shows the edge pixels remain unchanged. The examples on the page are incorrect.