Digital Reconstruction of Fragmented Artifacts

نویسندگان

  • Helena Cristina G. Leitão
  • Jorge Stolfi
چکیده

(EN) We describe an ongoing research project on efficient methods for identification and reconstruction of broken objects among large collections of irregular fragments. Applications include archaeology, art restoration, failure analysis, and other disciplines. Our solution for flat objects uses multi-scale matching and constrained dynamic programming. We are now extending it to curved pottery fragments through computational stereo vision techniques. anzuwenden. Présentation d'un projet de recherche sur l'identification et la reconstruction d'objets brisés dans de vastes collections de fragments irréguliers. Ce probléme apparaît dans l'archéologie, la restauration d'objets d'art, l'analyse d'accidents, et bien d'autres disciplines. Notre solution pour objects plats utilise un système de couplage à échelles multiples et la programmation dynamique à contraintes. Nous cherchons maintenant à étendre le champ d'application de la méthode aux morceaux courbes de céramiques, par des techniques de vision stéréoscopique par ordinateur.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Assessment of simulated patient motion and its effect on myocardial perfusion SPECT using two reconstruction methods (Filtered Backprojection;FBP and Iterative method) [Persian]

Introduction: Motion of the patient during myocardial perfusion SPECT could potentially results in false perfusion defects. The effect of different reconstruction methods on these artifacts is not studied. Clarification of the relation between the extent, severity and duration of motion with the resultant artifacts may be helpful in designing special soft wares for motion correction. This...

متن کامل

Edge Artifacts in Point Spread Function-based PET Reconstruction in Relation to Object Size and Reconstruction Parameters

Objective(s): We evaluated edge artifacts in relation to phantom diameter and reconstruction parameters in point spread function (PSF)-based positron emission tomography (PET) image reconstruction.Methods: PET data were acquired from an original cone-shaped phantom filled with 18F solution (21.9 kBq/mL) for 10 min using a Biograph mCT scanner. The images were reconstructed using the baseline or...

متن کامل

Analyzing registry, log files, and prefetch files in finding digital evidence in graphic design applications

The products of graphic design applications leave behind traces of digital information which can be used during a digital forensic investigation in cases where counterfeit documents have been created. This paper analyzes the digital forensics involved in the creation of counterfeit documents. This is achieved by first recognizing the digital forensic artifacts left behind from the use of graphi...

متن کامل

Artifact reduction techniques in Cone Beam Computed Tomography (CBCT) imaging modality

Introduction: Cone beam computed tomography (CBCT) was introduced and became more common based on its low cost, fast image procedure rate and low radiation dose compared to CT. This imaging modality improved diagnostic and treatment-planning procedures by providing three-dimensional information with greatly reduced level of radiation dose compared to 2D dental imaging modalitie...

متن کامل

Towards Automated 3D Reconstruction of Defective Cultural Heritage Objects

Due to recent improvements in 3D acquisition and shape processing technology, the digitization of Cultural Heritage (CH) artifacts is gaining increased application in context of archival and archaeological research. This increasing availability of acquisition technologies also implies a need for intelligent processing methods that can cope with imperfect object scans. Specifically for Cultural ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004