Adaptive lifting coding scheme for video scene changes

نویسندگان

  • Wade Trappe
  • Haitao Zheng
  • K. J. Ray Liu
چکیده

The lifting scheme is used as a motivational tool for designing a better temporal subband scheme in video coding. The new subband coding scheme replaces the typical Haar filterbank. A simple criterion is used for the detection of scene changes in video sequences, and a modification to the Haar lifting scheme is developed that allows for adjusting the filterbank near a scene change. The new edge adaptive lifting scheme is applied to a scene change in video data and achieves improved performance at scene change frames when compared with the lifting Haar filterbank.

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

Compressed Domain Scene Change Detection Based on Transform Units Distribution in High Efficiency Video Coding Standard

Scene change detection plays an important role in a number of video applications, including video indexing, searching, browsing, semantic features extraction, and, in general, pre-processing and post-processing operations. Several scene change detection methods have been proposed in different coding standards. Most of them use fixed thresholds for the similarity metrics to determine if there wa...

متن کامل

Adaptive Spectral Separation Two Layer Coding with Error Concealment for Cell Loss Resilience

This paper addresses the issue of cell loss and its consequent effect on video quality in a packet video system, and examines possible compensative measures. In the system's enconder, adaptive spectral separation is used to develop a two-layer coding scheme comprising a high priority layer to carry essential video data and a low priority layer with data to enhance the video image. A two-step er...

متن کامل

An Adaptive Video Coding Control Scheme for Real-Time MPEG Applications

This paper proposes a new rate control scheme to increase the coding efficiency for MPEG systems. Instead of using a static group of picture (GOP) structure, we present an adaptive GOP structure that uses more Pand B-frame coding, while the temporal correlation among the video frames maintains high. When there is a scene change, we immediately insert intramode coding to reduce the prediction er...

متن کامل

Wavelet video coding via a spatially adaptive lifting structure

In this paper we prcsent a spatially adaptive wavelet video coding technique with an update-first lifting structure. A common problem in many adaptivc-transform frameworks is the introduction of large overhead to address side information. In this paper we demonstrate that our structure does not need to transmit any side information to synchronize the encoder and decoder. We incorporate this tec...

متن کامل

Advanced lifting-based motion-threading (MT) technique for 3D wavelet video coding

This paper proposes an advanced motion-threading technique to improve the coding efficiency of the 3D wavelet coding. We extend the original motion-threading technique to the lifting wavelet structure. This extension solves the artificial motion thread truncation problem in long support temporal wavelet filtering, and enables the accuracy of motion alignment to be fractional-pixel with guarante...

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 1999