Guided adaptive interpolation filter
Waseem Waheed, Mukhalad Al‐nasrawi, Guang Yi Deng · IET Image Processing · 2020
Edge‐aware smoothing has proved to be a fundamental technique for various image processing and computer vision tasks. In this study, the authors introduce a local, non‐iterative, and effective edge‐preserving filter namely guided adaptive interpolation filter (GAIF). GAIF can be used as a post‐processing step after any smoothing filter to improve its edge preservation performance without reformulation. GAIF has an computation complexity, where N is the total number of pixels in the image. To further increase the efficiency of GAIF at edge‐preservation, two techniques are introduced and demonstrated. GAIF efficiency is demonstrated and compared to state‐of‐the‐art techniques on a number of tasks including image smoothing, flash/no‐flash image denoising/fusion, single image dehazing, and image details enhancement.