Eigenspace Model Based Error Concealment and Low Bit Rate Coding of Face Sequences
نویسندگان
چکیده
منابع مشابه
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 کاملEfficient face coding in video sequences combining adaptive principal component analysis and a hybrid codec approach
This paper presents a new proposal for a video coding scheme intended for human faces in video sequences using an eigenspace approach. The scheme greatly improves previous results [1] by proposing a new adaptive eigenspace technique in combination with the new upcoming standard AVC [2], [3]. The description of the face is also included in the bit stream using the MPEG-7 descriptors [4] thus pro...
متن کاملError Concealment using Motion Field Interpolation
In the context of block-based video coding, two error concealment algorithms are presented. The first algorithm is based on bilinear motion field interpolation (BMFI). For each pel in a damaged block, the algorithm recovers a motion vector using bilinear interpolation of neighbouring motion vectors. This vector is then used to conceal the damaged pel. A reduced complexity version of this algori...
متن کاملError concealment for SNR scalable video coding in wireless communication
A mandatory requirement for future wireless multimedia communication is the availability of error resilient media codecs. This work discusses error detection and concealment techniques for a layered scalable video decoder, based on the SNR scalability option of the H.263 standard. A concealment method is proposed which uses error frequency and error location statistics for efficient hiding of t...
متن کاملError - Resilient Standard - Compliant Video Coding
In this chapter we review and compare two approaches to robust video transmission that can be implemented within the H.263 video compression standard. The focus of this chapter is on channel adaptive approaches that rely on a feedback channel between transmitter and receiver carrying acknowledgment information. Based on the feedback information, rapid error recovery is achieved by intra refresh...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005