Efficient multiple description scalable video coding scheme based on weighted signal combinations

Scalable multiple description coding of video sequences

In this paper, we address the problem of robust transmission of compressed visual information and propose two transmission schemes based on Multiple Description Scalable Coding (MDSC). In both schemes, we generate four spatial subsequences from the original video stream, by subsampling in both horizontal and vertical directions. Then, each description is encoded using two subsequences using the...

An efficient secure channel coding scheme based on polar codes

In this paper, we propose a new framework for joint encryption encoding scheme based on polar codes, namely efficient and secure joint secret key encryption channel coding scheme. The issue of using new coding structure, i.e. polar codes in Rao-Nam (RN) like schemes is addressed. Cryptanalysis methods show that the proposed scheme has an acceptable level of security with a relatively smaller ke...

Spatial Multiple Description Coding for Scalable Video Streams

The need for adapting video stream delivery over heterogeneous and unreliable networks requires self-adaptive and error resilient coding.Network bandwidth fluctuations can be handled bymeans of a video coding schemewhich adapts to the channel conditions. However, packet losses which are frequent in wireless networks can cause a mismatch during the reconstruction in the receiver end and result i...

Unbalanced multiple description wavelet coding for scalable video transmission

Scalable video coding (SVC) and multiple description coding (MDC) are the two different adaptation schemes for video transmission over heterogenous and best-effort networks such as the Internet. We propose a new approach to encode video for unreliable networks with rate adaptation capability. Our proposed method groups 3D discrete wavelet transform coefficients in different descriptions and app...

Concatenated multiple description coding of frame-rate scalable video