7907
To this end , we leverage surface isometry and formulate 3D reconstruction as the joint problem of non-rigid image registration and depth estimation .
 used for: surface isometry, 3D reconstruction; used for: joint problem of non-rigid image registration and depth estimation, 3D reconstruction
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  surface isometry, 3D reconstruction; joint problem of non-rigid image registration and depth estimation, 3D reconstruction 
Answer:
 used for: surface isometry, 3D reconstruction; used for: joint problem of non-rigid image registration and depth estimation, 3D reconstruction