This paper proposes a new image interpolation technique by using direction-aware transform. In literature, it is known that Cosine-Sine modulated filter banks (CSMFB) can be regarded as alternative dual-tree complex wavelet transform, therefore, CSMFB has rich directional selectivity. Our interpolation procedure consists of two stages. First, we generate low frequency image and six directional images from the input image by using 4-channel CSMFB. Then each image is interpolated along with each direction. The simulation results show that our method can produce high visual quality images and improves some artifacts. Moreover, our method is quite feasible from the view point of hardware implementation since there is no branching procedure.
|Title of host publication
|Proceedings - 2010 1st IEEE Latin American Symposium on Circuits and Systems, LASCAS 2010
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 2016 Feb 17
|1st IEEE Latin American Symposium on Circuits and Systems, LASCAS 2010 - Foz do Iguacu, Brazil
Duration: 2010 Feb 24 → 2010 Feb 26
|1st IEEE Latin American Symposium on Circuits and Systems, LASCAS 2010
|Foz do Iguacu
|10/2/24 → 10/2/26
- cosine-sine modulated filter banks
- Direction-aware transform
- image interpolation
ASJC Scopus subject areas
- Electrical and Electronic Engineering