Quality Aware Error Detection in 2-D Separable Linear Transformation

In this paper, we propose a generic weighted checksum code based quality aware error detection scheme for 2-D separable linear transformation. These key components are widely used in multimedia compression systems, e.g., video and image codecs. The technique encodes the input array at the 2-D linear transformation level, and algorithms are designed to operate on encoded data and produce encoded output data. The proposed error detection technique is a system-level method therefore can be used in existing hardware or software 2-D linear transformation architectures with low overhead. More importantly, the proposed weighted checksum code based error detection can enable quality metric aware error detection which only flags an error when the quality of the result is lower than expectation. The error tolerance detection technique can fit perfectly in multimedia compression systems.