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AndroidGreece.gr - View topic - augmented reality
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Reply to topic  [ 2 posts ] 
 augmented reality 
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Joined: 27 Aug 2012, 19:24
Posts: 1
Post augmented reality
Εχω παρει ενα θεμα για την πτυχειακη μου που πρεπει η εφαρμογη να εντοπιζει που εισαι καθως εχεις ανοιχτη την καμερα. Στην συνεχεια αν εχεις στραμμενη την καμερα πανω σε ενα σημειο που εχεις ορισει ως σημαντικο τοτε να πατας πανω στο εικονιδιο και να σου δινει πληροφοριες για το συγκερκιμενο σημειο. Εμαθα οτι χρησιμοποιουνται ετοιμα εργαλεια augmented reality για να τα κανεις αυτα!Εχετε να μου προτεινετε καποιο?Ειναι ευκολες οι αλλαγες στον κωδικα απο αυτα τα εργαλεια?

Ευχαριστω!


12 Sep 2012, 17:32
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Joined: 11 Jan 2012, 13:09
Posts: 8
Post Re: augmented reality
Δεν είμαι ειδικός με το θέμα, αλλά ούτε και κατάλαβα ακριβώς το τι θέλεις να κάνει η εφαρμογή σου. Το καλύτερο θα είναι να κάνεις πρώτα μια συζήτηση με τον επιβλέποντα καθηγητή σου, ο οποίος (φαντάζομαι) θα μπορέσει να σε σπρώξει προς τη σωστή κατεύθυνση.

Το τι είναι Augmented Reality και σε ποιες εφαρμογές χρησιμοποιείται μπορείς να πάρεις μια γεύση από την wikipedia (). Όσο για libraries, υπάρχουν μερικές:

1. Augmented Reality library ()
2. ARToolKit ()
3. ARmsk ()

Επειδή όπως σου έγραψα και στην αρχή, οι απαιτήσεις της εφαρμογής σου δεν περιγράφονται επακριβώς, καλόν είναι να ρίξεις και μια ματιά στους αλγόριθμους SIFT (Scale-invariant feature transform) και SURF (Speeded Up Robust Feature)

1. SIFT ()
2. SURF (). Στο λήμμα αυτό δίνονται και πολλά implementations όπως το OpenSURF ()

Ο αλγόριθμος SIFT θεωρείται πιο αργός, έως πολύ πιο αργός. Ένα paper που μπορεί να σου φανεί χρήσιμο είναι το:

Performance Improvement of Moving Object Recognition and Tracking Algorithm using Parallel Processing of SURF and Optical Flow ()

Από τα λίγα που καταλαβαίνω, για να πετύχεις αξιοπρεπείς ταχύτητες μάλλον θα πρέπει να πέσεις στα βαθιά και να κάνεις χρήση του NDK.

Δοκίμασε επίσης να κάνεις λίγο googling με λέξεις και φράσεις όπως: object recognition and tracking algorithm ή surf and sift algorithm.


15 Sep 2012, 19:55
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