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Local ridge orientation field describes well the topological pattern of fingerprint ridge-valley flows. It is a rich information resource for fingerprint image processing and feature extraction in automatic fingerprint recognition algorithm. But reliable estimation of orientation field is still challenging for fingerprint images of poor quality. In this paper, we propose a method for modeling fingerprint...
In the conventional H.264 standard, specified size of Macro-blocks (MBs) is cut from one single frame or field. For every frame, the encoded data are mainly composited with Motion vectors (MVs) and the residuals after Motion Compensation (MC) for all MBs in the frame. However, observing the fact that MVs may keep relatively constant in some videos containing slow changing scenes. This indicates that...
In the new video coding paradigm, Wyner-Ziv (WZ) video coding, or lossy coding of video with decoder side information (SI), SI is involved not only in the decoding of the quantized source, but also in the reconstruction process, so the quality of SI is a key factor to the performance of a WZ video codec. In this paper, an approach to SI estimation for WZ video coding is proposed. It is based on motion...
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