Interpolation using wavelet transform and discrete cosine transform for high resolution display
Ramesh Kumar Lama, Soekjoo Shin, Moonsoo Kang, Goo‐Rak Kwon, Moo-Rak Choi · 2016
We propose a new interpolation method based on the hybrid technique combining the discrete wavelet transform (DWT) and discrete cosine transform (DCT). The high frequency wavelet coefficients are interpolated using the zero pad method in the DCT domain. The upscaled image is generated using inverse DWT of interpolated coefficients and original image.