TEST: added noise to input images and gradients
TEST: added noise to input images and gradients

nilgoyyou/dipy,JohnGriffiths/dipy,oesteban/dipy,mdesco/dipy,Messaoud-Boudjada/dipy,sinkpoint/dipy,matthieudumont/dipy,mdesco/dipy,jyeatman/dipy,JohnGriffiths/dipy,demianw/dipy,villalonreina/dipy,FrancoisRheaultUS/dipy,StongeEtienne/dipy,FrancoisRheaultUS/dipy,rfdougherty/dipy,Messaoud-Boudjada/dipy,StongeEtienne/dipy,nilgoyyou/dipy,demianw/dipy,oesteban/dipy,beni55/dipy,jyeatman/dipy,sinkpoint/dipy,matthieudumont/dipy,rfdougherty/dipy,villalonreina/dipy,beni55/dipy