org.opencv.photo
Classes 
AlignExposures
AlignMTB
CalibrateCRF
CalibrateDebevec
CalibrateRobertson
MergeDebevec
MergeExposures
MergeMertens
MergeRobertson
Photo
Tonemap
TonemapDrago
TonemapDurand
TonemapMantiuk
TonemapReinhard