Submitted by colleen on 3 February 2015 - 4:21pm.
In this week's free Deke's Techniques movie, Deke applies the Mean Stack mode command to multiple frames from a video in order to create one single photograph with drastically reduced noise.
The method involves converting frames from a noisy video clip into layers in Photoshop, then lining up those similar-but-slightly-off-due-to-being-on-a-moving-boat images using Photoshop's Auto-Align Layers command. Next, Deke uses the Stack Mode's Mean command to choose the average value of each pixel from each of the frames. The result is this noisy single frame (representative of the noise present in each of Deke's fifteen contributing images)...
...becomes this delightfully smooth rendition:
And next week, Deke demonstrates how to dramatically enhance this scene to more emotionally recreate the tropical magic. Here's a preview (actually here is the real thing):
If you're curious about other ways to take advantage of image stacking in Photoshop, there are a couple of other Deke's Techniques you might enjoy. In one, Deke removed "people" (OK, four copies of me and four monkey heads---hey, it's Deke) from the Teatro Olimpico in Vincenza, Italy. In another, he uses image stacks to toy with the tourists on the Piazza San Marco in Venice, allowing you to experience this popular tourist attraction in ways never possible in real life.
If you're not a member of lynda.com, you can get a free 10-day trial to check out all the episodes by heading over to lynda.com/deke.
See you next week if I haven't run back to the magical islands! Read more »