Hello
I would like in javascript, find the standard deviation of a document in photoshop
Photoshop help say :
standard deviation = Square Root(variance)
variance = (sum( (value-mean)au carré ) over non-transparent pixels ) / ( number of non-transparent pixels - 1)
I can find average and median but not std dev, I don't know "value" in this case
Thanks for your help
Excuse for my english, I'm ... french
Bye