Enhanced DOI Algorithm for De-Interlacing based on Median Filter

S. Ku, H. Lee, K. Lee, and J. Jeong (Korea)


Image Quality, Direction Vector, De-Interlacing, Image Interpolation, Median Filter


This paper proposes a new enhanced direction-oriented interpolation method based on median filter and then applies this method to de-interlacing. In the proposed algorithm, the previously developed DOI (Direction Oriented Interpolation) algorithm was used as a basis. The de-interlacing method was divided into two main parts. First, the edge direction was found. Then, missing pixels were interpolated along with the decided edge. In this paper, after predicting the edge through the DOI algorithm considering high angle edge direction, missing pixels were interpolated by using the median filter. Experimental results indicate that the propose algorithm is superior to the conventional algorithms in terms of objective and subjective criteria.

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