Plugin Solutions For Final Cut Pro, Color, & Motion
 
   
   
   
    Color Plugins
 

G Chroma Sharpen

This is a very powerful tool to help correct the problems created by chroma sub-sampled video sources, whether they be 4:2:2, 4:1:1 or 4:2:0 or 3:1:1. It works by analyzing the luma of the image as a guide to the reconstruction of the sub-sampled chroma information. This node can be extremely useful in correcting colour bleeding. Note: if the chroma of the video source that you are attempting to correct is not smoothed (for instance video from Apple DV codec), place the appropriate G Chroma Smooth node ahead of the G Chroma Sharpen in the process tree. You can use the G RGB to YCbCr node in conjunction with G Chroma Sharpen to help you see exactly what this node is doing to the chroma. It's quite a surprise to see how bad and blurry the chroma of most video is, and how sharp and nice it can be after applying this node.

Control
Settings
Notes
Chroma Sharpness 0 to 100 This controls the strength of the Chroma sharpening effect. Use caution, as large values (those above 30) can cause chroma artifacts, as well as extreme chroma sharpening.

 

 
   
 
 
   
 
 
 

 

Examples

The following examples demonstrate how effective the chorma sampling tools are on NTSC DV Footage.

Before
After 4:1:1 Smooth & Chroma Sharpen

Before
(Showing Cb only)

After 4:1:1 Smooth Only
(Showing Cb only)
After 4:1:1 Smooth &
Chroma Sharpen
(Showing Cb only)


Before
After 4:1:1 Smooth & Chroma Sharpen

Before
(Showing Cb only)

After 4:1:1 Smooth Only
(Showing Cb only)
After 4:1:1 Smooth &
Chroma Sharpen
(Showing Cb only)

 

The effects of chroma sampling can be even more vivid on extremely colour corrected footage.

Before

After 3-Strip to boost chroma
After 4:1:1 Smooth &
Chroma Sharpen

 

 
 

 


   


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