At first glance, photos from Sally Gall’s Aerial series at Chelsea’s Winston Wachter Gallery create happy confusion; abstract shapes and vibrant colors lure us into trying to understand what’s being represented. After a longer look, what appeared to be sea life or flowers resolves into items seen from below on a clothes-line. Even after the ‘ah-ha’ moment of identification, Gall’s images continue to entice as colorful and complex abstractions. (On view in Chelsea through March 5th).