JPEG2000 ROI Coding With Fine-Grain Accuracy Through Rate-Distortion Optimization Techniques

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

JPEG2000 ROI coding through component priority for digital mammography

Region Of Interest (ROI) coding is a prominent feature of some image coding systems aimed to prioritize specific areas of the image through the construction of a codestream that, decoded at increasing bit-rates, recovers the ROI first and with higher quality than the rest of the image. JPEG2000 is a wavelet-based coding system that is supported in the Digital Imaging and Communications in Medic...

متن کامل

Jpeg2000 Roi Coding in Medical Imaging Applications

Region of interest (ROI) coding is one of the innovative functionalities supported by JPEG2000. It enables a non-uniform distribution of the available bit budget (i.e. image quality) between a selected region (ROI) and the rest of the image (background). This is achieved by appropriate scaling of the background wavelet coefficients. Two different methods are used for ROI coding, the MAXSHIFT me...

متن کامل

Look-ahead coding considering rate/distortion-optimization

Rate/Distortion-optimization, the approach to weight bits by their individual impact on image quality, has become a state of the art tool in video compression. In the emerging advanced video coding standard (AVC), being developed by the Joint Video Team (JVT) of ITU and MPEG [1], Rate/Distortion-optimization plays an important role for its compression performance. Starting point of AVC has been...

متن کامل

Generalized bitplane-by-bitplane shift method for JPEG2000 ROI coding

One interesting feature of the new JPEG2000 image coding standard is support of region of interest (ROI) coding using the maximum shift (Maxshift) method, which allows for arbitrarily shaped ROI image compression without shape coding or explicitly transmitting any shape information to the decoder. The major disadvantage of the Maxshift method is that it cannot adjust the scaling value which det...

متن کامل

Unbalanced Multiple-Description Video Coding with Rate-Distortion Optimization

We propose to use multiple-description coding (MDC) to protect video information against packet losses and delay, while also ensuring that it can be decoded using a standard decoder. Video data are encoded into a high-resolution stream using a standard compliant encoder. In addition, a low-resolution stream is generated by duplicating the relevant information (motion vectors, headers and some o...

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: IEEE Signal Processing Letters

سال: 2009

ISSN: 1070-9908

DOI: 10.1109/lsp.2008.2008570