Quarter Laplacian Filter For Edge Aware Image Processing
Yuanhao Gong, Wenming Tang, Lebin Zhou, Lantao Yu, Guoping Qiu
Abstract
This paper presents a quarter Laplacian filter that can preserve corners and edges during image smoothing. Its support region is $2\times 2$, which is smaller than the $3\times 3$ support region of the classical Laplacian filter. Thus, it is more local. Moreover, this filter can be implemented via the classical box filter, leading to high performance for real time applications. Finally, we show its edge preserving property in several image processing tasks, including image smoothing, texture enhancement, and low-light image enhancement. The proposed filter can be adopted in a wide range of image processing applications.
Topics & Concepts
Edge-preserving smoothingSmoothingComputer visionFilter (signal processing)Computer scienceArtificial intelligenceComposite image filterImage processingLaplace operatorImage (mathematics)Enhanced Data Rates for GSM EvolutionMathematicsMathematical analysisImage Enhancement TechniquesAdvanced Image Fusion TechniquesImage and Signal Denoising Methods