Among the authors of the paper "Stitching videos streamed by mobile phones in real-time", how many of them are affiliated with Cairo Microsoft Innovation Lab?
"FIBER: A Generalized Framework for Auto-tuning Software" is the Title of paper; affiliated refers to Affiliation;  University of Tokyo is the affiliation organization
SELECT COUNT(T1.AuthorId) FROM PaperAuthor AS T1 INNER JOIN Paper AS T2 ON T1.PaperId = T2.Id WHERE T1.Affiliation = 'University of Tokyo' AND T2.Title = 'FIBER: A Generalized Framework for Auto-tuning Software'