Rectangular Region-based Selective Enhancement (RSE) for MPEG-4 Fine Granular Scalability
نویسندگان
چکیده
Abstract In MPEG-4 Fine Granular Scalability(FGS) video, Selective Enhancement(SE) function is adopted to enhance the subject quality of the region of interest(ROI) in truncated bit stream. But it has the problem of excessive increase in bit-rate. We present a new rectangular region-based SE(RSE) algorithm that can work almost as well as SE with negligible increase in bit-rate. It is shown by simulation that the proposed RSE can provide a good visual quality for the selected ROI with significantly reduced overhead bits.
منابع مشابه
Analysis and Distortion Modeling of Mpeg-4 Fgs
In this paper, we analyze statistical and rate-distortion (R-D) properties of MPEG-4 Fine-Granular Scalability (FGS), which has recently become an important scalable compression framework and a de-facto standard for Internet video streaming. We first propose a novel statistical model of DCT residue that accurately captures the properties of the input to the MPEG-4 FGS enhancement layer. Our res...
متن کاملUnequal packet loss resilience for fine-granular-scalability video
Several embedded video coding schemes have been recently developed for multimedia streaming over IP. In particular, fine-granular-scalability (FGS) video coding has been recently adopted by the MPEG-4 standard as the core video-compression method for streaming applications. From its inception, the FGS scalability structure was designed to be packet-loss resilient especially under unequal packet...
متن کاملA hybrid temporal-SNR fine-granular scalability for Internet video
Transmission of video over bandwidth varying networks like the Internet requires a highly scalable solution capable of adapting to the network condition in real-time. To address this requirement, scalable video-coding schemes with multiple enhancement layers have been proposed. However, under this multiple-layer paradigm, the transmission bit-rate of each layer has to be predetermined at encodi...
متن کاملOptimization of Selective Enhancement for MPEG-4 Fine Granularity Scalability
In this paper, we use the Fine Granularity Scalability (FGS) as defined in the Streaming Video Profile (SVP) of MPEG4 PDAM4 [1] and demonstrate how FGS can match the requirement of the Internet environment and other applications with heterogeneous networks such as terrestrial broadcasting, Internet broadcasting, and wireless communications. We present two algorithms that utilize an FGS syntax t...
متن کاملDigital Authentication and Verification in MPEG-4 Fine-Granular Scalability Video Using Bit-Plane Watermarking
This paper proposes a content authentication scheme for MPEG-4 FGS (fine-granular scalability) video based on digital fragile watermarking using BitplaneCoding Watermarking (BCW). In embedding procedure, the watermark information is embedded into every 8×8 block of residual bit-planes in the enhancement layer while encoding to MPEG-4 FGS video stream. The watermark bit is modulated by modifying...
متن کامل