Novel video coding scheme using adaptive mesh-based interpolation and node tracking

An alternative method to H.263 for encoding of moving images at bit rates below 64 kbit/s is presented using adaptive spatial subsampling, mesh based interpolation and node tracking. This is why we call this new coding algorithm Mesh Based Interpolative Coding (MBIC). Data compression is achieved by representing the image content by a number of non-equidistant sampling points (nodes) for luminance and colour difference signals. The decoder reconstructs the image by interpolating the transmitted sampling points. For a given number of nodes which corresponds approximately to the total bit rate,thecoder generatesthe node positionsby minimizingthe meansquareerror betweenthe originalpictureand theinterpolated picture. For moving images, each node is associated with a motion vector for node tracking. Simulation results of a complete encoder and decoder show that this method can provide lower bit rates than conventional schemes at a given picture quality for sequences with moderate movement....

• Type: Conference
• Year: 2000
• Where: VCIP
• Authors: Eckhart Baum, Joachim Speidel
• Keywords: Bit Rates, Node Tracking, Rate, VCIP 2000, VCIP 2001