title: Selective data pruning-based compression using high-order edge-directed interpolation.
abstract: This paper proposes a selective data pruning-based compression scheme to improve the rate-distortion relation of compressed images and video sequences. The original frames are pruned to a smaller size before compression. After decoding, they are interpolated back to their original size by an edge-directed interpolation method. The data pruning phase is optimized to obtain the minimal distortion in the interpolation phase. Furthermore, a novel high-order interpolation is proposed to adapt the interpolation to several edge directions in the current frame. This high-order filtering uses more surrounding pixels in the frame than the fourth-order edge-directed method and it is more robust. The algorithm is also considered for multiframe-based interpolation by using spatio-temporally surrounding pixels coming from the previous frame. Simulation results are shown for both image interpolation and coding applications to validate the effectiveness of the proposed methods.
authors.affiliation: Digital Media Solutions Lab, Samsung Information SystemsAmerica, Irvine, CA 92612, USA. dung.vo@samsung.com
authors.forename: Dũng T
authors.initials: DT
authors.lastname: Võ
authors.forename: Joel
authors.initials: J
authors.lastname: Solé
authors.forename: Peng
authors.initials: P
authors.lastname: Yin
authors.forename: Cristina
authors.initials: C
authors.lastname: Gomila
authors.forename: Truong Q
authors.initials: TQ
authors.lastname: Nguyen