Efficient rate control scheme using modified inter-layer dependency for spatial scalability
نویسندگان
چکیده
منابع مشابه
Rate Control Scheme for Spatial Scalability of H . 264 / SVC
This paper presents a rate control scheme for spatial scalability of H.264/SVC. At first, an adaptive method is proposed to decide the initial quantization parameter. Then, based on the transform coefficients distribution of spatial scalability, a new natural logarithm domain rate-distortion model is derived from the inspiration of the Cauchy-Density-Based model. Next, with above method and mod...
متن کاملModified MPEG-2 video coders with efficient multi-layer scalability
The paper describes a multi-layer video coder based on spatiotemporal scalability and data partitioning. The coder consists of two parts: a low-resolution coder and full-resolution coder. The first one encodes pictures with reduced spatial and temporal resolution. The data are partitioned into some base layers with fine granularity. The full-resolution encoder exploits interpolated images from ...
متن کاملA scheme for spatial scalability using nonscalable encoders
We describe a scheme that achieves spatially scalable coding of video by employing nonscalable video encoders (e.g., MPEG-2 main profile), along with a downsampler and an upsampler. The scheme is illustrated for the case of coding video at two resolutions. The enhancement layer is coded in two steps by first exploiting the spatial redundancy and then exploiting the temporal redundancy. Hence, t...
متن کاملCooperative Inter-Stream Rate Control Scheme for Layered Multicast
In a heterogeneous network, layered multicast is useful which enables receivers to determine the rate of a stream adaptively to their various capacities. Previous rate control schemes for layered multicast, however, treat each stream independently and cannot allocate the requested bandwidth to each stream when receivers subscribe to multiple streams. In this paper, we propose an inter-stream ra...
متن کاملQuality Estimation for H.264/SVC Inter-layer Residual Prediction in Spatial Scalability
Scalable Video Coding (SVC) provides an efficient compression for the video bitstream equipped with various scalable configurations. H.264 scalable extension (H.264/SVC) is the most recent scalable coding standard. It involves the state-of-the-art inter-layer prediction to provide higher coding efficiency than previous standards. Moreover, the requirements for the video quality on distinct situ...
متن کاملذخیره 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: Sādhanā
سال: 2016
ISSN: 0256-2499,0973-7677
DOI: 10.1007/s12046-016-0568-6