To　improve　the　efficiency　of　matching　the　corresponding　points,　stereo　rectification　is　used　to　make　the　corresponding　epipolar　lines　of　image　pairs　be　placed　in　the　same　horizontal　lines　or　vertical　lines　in　stereovision.　In　order　to　avoid　the　complicated　calculation　of　many　previous　algorithms　such　as　based　on　epipolar　lines,　based　on　fundamental　matrix　or　directly　depend　on　corresponding　points,　a　simple　and　convenient　rectification　method　of　stereo　image　pairs　with　calibrated　cameras　is　proposed　in　this　paper.　The　method　firstly　establishes　two　virtual　cameras　with　parallel　optical　axis　by　coordinate　system　transformation　based　on　the　pose　relationship　of　the　two　cameras　from　calibration　results.　Secondly,　it　re-projects　the　points　of　the　original　image　onto　image　planes　of　the　virtual　cameras　through　geometrical　method,　and　then　realized　the　stereo　rectification.　The　experiments　of　real　stereo　image　pairs　show　that　the　proposed　method　is　able　to　realize　the　rectification　of　stereo　image　pairs　accurately　and　efficiently.　©2010　IEEE.