4 research outputs found
Resolution enhancement of video sequences by using discrete wavelet transform and illumination compensation
This research paper proposes a new technique for video resolution enhancement that employees an illumination
compensation procedure before the registration process. After the illumination compensation process,
the respective frames are registered using the Irani and Peleg technique. In parallel, the corresponding frame
is decomposed into high-frequency (low-high, high-low, and high-high) and low-frequency (low-low) subbands
using discrete wavelet transform (DWT). The high-frequency subbands are superresolved using bicubic interpolation.
Afterwards, the interpolated high-frequency subbands and superresolved low-frequency subband
obtained by registration are used to construct the high-resolution frame using inverse DWT. The superiority
of the proposed resolution enhancement method over well-known video superresolution techniques is shown
with quantitative experimental results. For the Akiyo video sequence, there are improvements of 2.26 dB
when compared to the average peak signal-to-noise ratio obtained by the state-of-the-art resolution technique
proposed by Vandewalle