2007, Volume 9, Issue 10
Strategic Study of CAE >> 2007, Volume 9, Issue 10
A Video Scan Format Conversation Algorithm Based onSpatio-temporal Weight and Edge Direction
National Engineering Research Center for Application Specific Integrated Circuit System, Southeast University, Nanjing 210096, China
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Abstract
De-interlace is to convert interlaced images to progressive ones. In this paper, a de-interlacing algorithm based on spatio-temporal weight and edge direction is presented. It consists of motion detection, low-angle edge detection, and spatio-temporal weight adaptive interpolation. It uses total 4 fields information captured in field storage to detect the presence of motion. And it detects low-angle edge by an adaptive searching radius in which the 6°edge is obtained. The proposed method using spatio-temporal adaptive interpolation can obtain quite good display quality and satisfies real-time process of HDTV sequences.
Keywords
scan format conversation ; motion estimation ; edge detection ; spatio-temporal adaptive interpolation ; de-interlace
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