?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Part-to-Whole+Registration+of+Histology+and+MRI+Using+Shape+Elements&rft.creator=Pichat%2C+J&rft.creator=Iglesias%2C+JE&rft.creator=Nousias%2C+S&rft.creator=Yousry%2C+T&rft.creator=Ourselin%2C+S&rft.creator=Modat%2C+M&rft.description=Image+registration+between+histology+and+magnetic+resonance+imaging+(MRI)+is+a+challenging+task+due+to+differences+in+structural+content+and+contrast.+Too+thick+and+wide+specimens+cannot+be+processed+all+at+once+and+must+be+cut+into+smaller+pieces.+This+dramatically+increases+the+complexity+of+the+problem%2C+since+each+piece+should+be+individually+and+manually+pre-aligned.+To+the+best+of+our+knowledge%2C+no+automatic+method+can+reliably+locate+such+piece+of+tissue+within+its+respective+whole+in+the+MRI+slice%2C+and+align+it+without+any+prior+information.+We+propose+here+a+novel+automatic+approach+to+the+joint+problem+of+multi-modal+registration+between+histology+and+MRI%2C+when+only+a+fraction+of+tissue+is+available+from+histology.+The+approach+relies+on+the+representation+of+images+using+their+level+lines+so+as+to+reach+contrast+invariance.+Shape+elements+obtained+via+the+extraction+of+bitangents+are+encoded+in+a+projective-invariant+manner%2C+which+permits+the+identification+of+common+pieces+of+curves+between+two+images.+We+evaluated+the+approach+on+human+brain+histology+and+compared+resulting+alignments+against+manually+annotated+ground+truths.+Considering+the+complexity+of+the+brain+folding+patterns%2C+preliminary+results+are+promising+and+suggest+the+use+of+characteristic+and+meaningful+shape+elements+for+improved+robustness+and+efficiency.&rft.subject=IMAGE+REGISTRATION%2C+FRECHET+DISTANCE%2C+SECTIONS%2C+CURVES%2C+BRAIN%2C+Shape%2C%0D%0AConferences%2C%0D%0AReliability&rft.publisher=IEEE&rft.date=2017-01-23&rft.type=Proceedings+paper&rft.publisher=16th+IEEE+International+Conference+on+Computer+Vision+(ICCV)&rft.language=eng&rft.source=+++++In%3A++2017+IEEE+International+Conference+on+Computer+Vision+Workshops+(ICCVW).++(pp.+pp.+107-115).++IEEE+(2017)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1572777%2F1%2FOurselin_1708.08117.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1572777%2F&rft.rights=open