Add Noise CIFilter

Is there any CIFilters that have a similar effect to the Photoshop "add noise" filter开发者_运维百科?

You can use CIRandomGenerator in combination with some blend filter (addition, screen or whatever). Total effects chain should be:

• Generate noise map
• Blend it with the source
• Crop to original extent

Also, it could be useful to prepare own noise texture and write something like random generator using CIAffineTile filter with a transform that translates the image randomly.