1. IMAGE RECONSTRUCION WITH NEGATIVE BACK-PROJECTION

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Nonlinear Back Projection for Tomographic Image Reconstruction

The objective of this paper is to investigate a new non-iterative paradigm for image reconstruction based on the use of nonlinear back projection filters. This method, which we call nonlinear back projection (NBP), attempts to directly model the optimal inverse operator through off-line training. Potential advantages of the NBP method include the ability to better account for effects of limited...

متن کامل

An Back-Projection Algorithm for SAR Image Formation

We propose a fast algorithm for far-field SAR imaging based on a new fast back-projection algorithm developed for tomography. We also modify the algorithm for the near-field scenario. The fast back-projection algorithm for SAR has computational complexity . Compared to traditional FFT-based methods, our new algorithm has potential advantages: the new algorithm does not need frequency-domain int...

متن کامل

Enhancing Resolution Using Iterative Back-Projection Technique for Image Sequences

Resolution enhancement is a basic and important technology in image/video processing. The goal of resolution enhancement is to reconstruct high-resolution image frames from the corresponding lowresolution versions. In this paper, an adaptive resolution enhancement scheme based on iterative backprojection was proposed. According to sub-pixel interpolation, additional information composed of seve...

متن کامل

Improving image resolution by adaptive back-projection correction techniques

— The paper describes a back-projection based algorithm, improved by adaptive techniques, able to reconstruct a high-resolution image from multiple low-resolution frames. The proposed approach is mainly based on a specific metric, the uncertainty degree, used in pixel reconstruction and on a local Auto-iterative approach for error correction. Using uncertainty the amount of computation is sensi...

متن کامل

Quantitative Evaluation of Reconstructed Image with Filtered Back Projection Bayes Method

We compared a Bayesian reconstruction method with conventional filtered back projection (FBP) method in positron emission tomography (PET). In the medical scene, PET scanning plays an important role for functional diagnosis such like measuring the cerebral glucose metabolisms. Tomographic image is reconstructed from the observed data, which is the recieved signals from administrated-radioactive...

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

ژورنال

عنوان ژورنال: Japanese Journal of Radiological Technology

سال: 1991

ISSN: 0369-4305,1881-4883

DOI: 10.6009/jjrt.kj00003500201