tag:blogger.com,1999:blog-64941683027509418522012-02-16T09:54:47.862-08:00papadimitriou kostashttp://www.blogger.com/profile/00474142347960313404noreply@blogger.comBlogger151100tag:blogger.com,1999:blog-6494168302750941852.post-16006252726491708032009-08-26T02:31:00.000-07:002010-01-01T01:09:45.361-08:00<div style="TEXT-ALIGN: justify" align="left">Η τρισδιάστατη απεικόνιση χρησιμοποιείται συχνά στην βιολογική και ιατρική έρευνα. Οι συνεχόμενες σε σειρά τομές είναι η πηγή από όπου αντλούνται τα αναγκαία για την τρισδιάστατη απεικόνιση δεδομένα και μπορεί να αποκτηθούν φυσικά με τομοποίηση η τεχνητά με οπτική τομοποίηση. Πολλές μελέτες στον χώρο της μικροσκοπίας απαιτούν τρισδιάστατη αναπαράσταση από σειριακές τομές, μια μέθοδο ανάλυσης που κάποτε είναι δύσκολη και χρονοβόρα. Από την στιγμή που κάθε τομή, κόβεται, τοποθετείται σε πλακάκι και/η φωτογραφίζεται ξεχωριστά, οι εικόνες των τομών πρέπει να μονταριστούν και να ευθυγραμμιστούν με στόχο να γίνει με ακρίβεια η ανάλυση και η παρατήρηση της τρισδιάστατης δομής. Ένας μεγάλος αριθμός διαφορετικών δομών μπορεί εύκολα να ανιχνευθεί και να τοποθετηθεί μαζί σε μια τρισδιάστατη σκηνή η οποία μπορεί να εμψυχωθεί (animation) η να αποθηκευτεί. Η τρισδιάστατη απεικόνιση με συνεχόμενες στη σειρά οπτικές τομές περιορίζεται από το πάχος της χοντρής φυσικής τομής από την οποία βγαίνουν οι συνεχόμενες στη σειρά οπτικές τομές. Η τρισδιάστατη απεικόνιση με φυσικές τομές έχει πρόβλημα στην ευθυγράμμιση των συνεχόμενων στη σειρά τομών που αντιμετωπίζεται από τον χρήστη με την βοήθεια φυσικών η τεχνητών εξωτερικών δομών και τη χρήση των γεωμετρικών σημείων της μεθόδου της κόλουρης πυραμίδας.<br /><br /><br />Methods of three-dimensional (3-D) reconstruction are extensively applied in biological and medical research. Optical or physical serial sectioning, appropriate staining, acquisition of images from serial sections, alignment of images from serial sections, generation of initial data for 3-D reconstruction, application of a relevant 3-D rendering software represents the steps in order to obtain 3-D reconstruction. Aligning and other problems are faced by different methods as for example is the Truncated Pyramid Representation method.</div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6494168302750941852-1600625272649170803?l=my3-dworld.blogspot.com' alt='' /></div>papadimitriou kostashttp://www.blogger.com/profile/00474142347960313404noreply@blogger.com2tag:blogger.com,1999:blog-6494168302750941852.post-83744064403874589572009-08-24T07:37:00.000-07:002009-11-13T03:49:19.342-08:00<object width="320" height="266" class="BLOG_video_class" id="BLOG_video-ebf36c27d0195230" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="movie" value="http://www.youtube.com/get_player"><param name="bgcolor" value="#FFFFFF"><param name="allowfullscreen" value="true"><param name="flashvars" value="flvurl=http://v8.nonxt6.googlevideo.com/videoplayback?id%3Debf36c27d0195230%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1332390620%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D2835790964E0E68FB012558FFF8C9012F045CE24.2D7760FD7BF7CFE718B08555CB916220E0659B71%26key%3Dck1&amp;iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3Debf36c27d0195230%26offsetms%3D5000%26itag%3Dw160%26sigh%3DyrV-5jFN0wy_YjZ_verdiGXw7ho&amp;autoplay=0&amp;ps=blogger"><embed src="http://www.youtube.com/get_player" type="application/x-shockwave-flash"width="320" height="266" bgcolor="#FFFFFF"flashvars="flvurl=http://v8.nonxt6.googlevideo.com/videoplayback?id%3Debf36c27d0195230%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1332390620%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D2835790964E0E68FB012558FFF8C9012F045CE24.2D7760FD7BF7CFE718B08555CB916220E0659B71%26key%3Dck1&iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3Debf36c27d0195230%26offsetms%3D5000%26itag%3Dw160%26sigh%3DyrV-5jFN0wy_YjZ_verdiGXw7ho&autoplay=0&ps=blogger"allowFullScreen="true" /></object><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6494168302750941852-8374406440387458957?l=my3-dworld.blogspot.com' alt='' /></div>papadimitriou kostashttp://www.blogger.com/profile/00474142347960313404noreply@blogger.com0tag:blogger.com,1999:blog-6494168302750941852.post-57786268726992529902009-08-22T06:26:00.000-07:002009-11-13T03:54:57.503-08:00<a href="http://2.bp.blogspot.com/_pWNtKrU5rKk/So_yU45NnLI/AAAAAAAAABs/ts49v1TFVj4/s1600-h/3dimaging2009-1+copy.jpg"><img id="BLOGGER_PHOTO_ID_5372779321159949490" style="WIDTH: 227px; 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CURSOR: hand; HEIGHT: 320px" alt="" src="http://2.bp.blogspot.com/_pWNtKrU5rKk/So_vsT8PTaI/AAAAAAAAABM/7e6ye9BrzXs/s320/3dimaging2009-5+copy.jpg" border="0" /></a><br /><div></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6494168302750941852-8852514683619490500?l=my3-dworld.blogspot.com' alt='' /></div>papadimitriou kostashttp://www.blogger.com/profile/00474142347960313404noreply@blogger.com0tag:blogger.com,1999:blog-6494168302750941852.post-70910401813226989462009-08-21T03:14:00.000-07:002009-11-13T04:00:43.178-08:00<object width="320" height="266" class="BLOG_video_class" id="BLOG_video-e058bb4c69d9869b" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="movie" value="http://www.youtube.com/get_player"><param name="bgcolor" value="#FFFFFF"><param name="allowfullscreen" value="true"><param name="flashvars" value="flvurl=http://v7.nonxt1.googlevideo.com/videoplayback?id%3De058bb4c69d9869b%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1332390620%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D7047F9FD286A14FC248DFD9A11D247C6E847DFE5.2A0F96E18CB34A3FFDD9355EE6AFAA317555D757%26key%3Dck1&amp;iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3De058bb4c69d9869b%26offsetms%3D5000%26itag%3Dw160%26sigh%3DYWAIgJ166ttA7qufhFMqXP52IZg&amp;autoplay=0&amp;ps=blogger"><embed src="http://www.youtube.com/get_player" type="application/x-shockwave-flash"width="320" height="266" bgcolor="#FFFFFF"flashvars="flvurl=http://v7.nonxt1.googlevideo.com/videoplayback?id%3De058bb4c69d9869b%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1332390620%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D7047F9FD286A14FC248DFD9A11D247C6E847DFE5.2A0F96E18CB34A3FFDD9355EE6AFAA317555D757%26key%3Dck1&iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3De058bb4c69d9869b%26offsetms%3D5000%26itag%3Dw160%26sigh%3DYWAIgJ166ttA7qufhFMqXP52IZg&autoplay=0&ps=blogger"allowFullScreen="true" /></object><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6494168302750941852-7091040181322698946?l=my3-dworld.blogspot.com' alt='' /></div>papadimitriou kostashttp://www.blogger.com/profile/00474142347960313404noreply@blogger.com0tag:blogger.com,1999:blog-6494168302750941852.post-27157639358921137782009-08-21T02:39:00.000-07:002009-11-13T04:27:12.187-08:00<a href="http://2.bp.blogspot.com/_pWNtKrU5rKk/So5rlDH5qWI/AAAAAAAAAA8/OBXvx8v_9C4/s1600-h/kyttaro+1.jpg"><img id="BLOGGER_PHOTO_ID_5372349689737357666" style="WIDTH: 320px; 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