A single field interlaced to progressive format conversion using edge map in the image block

Abstract

A new intra field deinterlacing algorithm with edge map in the image block is introduced. We first introduce an edge direction vector, which is computed by edge map, so that finer resolution of the edge direction can be acquired. The proposed edge direction vector oriented deinterlacer operates by identifying small pixel variations in three orientations (45°, 90°, and 135°), while weighted averaging to estimate missing pixel. According to the edge direction of the direction vector, we calculate weights on each edge direction. These weight values multiplied by the candidate deinterlaced pixels in order to successively build approximations of the deinterlaced sequence. The better performance of our deinterlacing algorithm with higher edge direction adaptively and less memory cost than the state-of-the-art intra field deinterlacing algorithms can be seen from the objective and subjective experimental results of the test sequences.