Bargus is an independent film company based in the South West of England with its hub located in Frome, Somerset.
Article
Removing Sharpening Artifacts
One of the tell-tale signs that a film has been shot with video equipment is that of sharpening artifacts that arise in the form of distinct bright and/or dark halos/rings around high contrast areas. This article outlines a technique to remove/reduce the occurence of bright halos in DV footage.
Author: Adam Bowman
Posted: 12th March 2005
Examples
You may have to wait awhile for the images to appear, place your mouse over the image to see the de-ringed image and off to see the original. These are all frames taken from footage shot with an XL1, the top two were shot in 50i and have not been deinterlaced. The rest were shot in Frame mode.
Notice how the halos around the black lettering and window are diminished but the rest of the picture is left relatively untouched by the process.
The resolution chart doesn't seem as bright when you remove the halos, which shows how much they affect the image.
Again, this technique can really help when text is present in the picture.
In this example it helps to take the harsh video edge off the picture, especially around the car boot and the house in the background.