Enhanced error resiliency for video with cyclic intra-refresh lines

In transmitting video over low bandwidth networks a cyclic intra-refresh (IR) line is preferable to periodic intra frames as an error mitigation technique. This paper shows that an IR line introduces non-uniform error sensitivity between regions within a picture that are identifiable by the position of the IR line. An error sensitivity aware slicing scheme is proposed to enable the use of unequal error protection techniques in order to offer better protection to the more important packets. Experimental results justify the validity of the proposed priority based protection scheme.