luminosity and color data in Bridge
I want an organized and mostly automatic way to sort photos by luminosity and color. My goal is to export luminosity and color data from a lot of files into a spreadsheet. Any help will be appreciated.
First step seems to be to see the data into Bridge.
Is there a way to see mean luminosity and mean RGB numbers in Bridge's metadata? Here are the luminosity and blue numbers from Photoshop's histogram for a photo. Are they available in Bridge? 

