Methods of noise reduction and edge enhancement in image processing. An exemplary method comprises extracting a plurality of pixels from the video signal, evaluating measures of edge existence in a plurality of directions within the extracted pixels, determining a level of variation from the measures ...
Image processing entails numerous topics. One is edge enhancement, which is the process of applying mathematical techniques to clarify the boundaries between regions in an image. In a sense, edge enhancement is an attempt to convert a photograph into a line drawing. Another activity in image analy...
Image processing entails numerous topics. One is edge enhancement, which is the process of applying mathematical techniques to clarify the boundaries between regions in an image. In a sense, edge enhancement is an attempt to convert a photograph into a line drawing. Another activity in image analy...
An image processing system that performs edge-enhancement on an image. The image processing system processes a region of the image at a given time. One specific pixel of an image region is compared to
Image Processing for Numerical Approximation of Conservation Laws We employ a nonlinear anisotropic diffusion operator like the ones used as a means of filtering and edge enhancement in image processing and in numerical m... T Grahs,A Meister,T Sonar - 《Siam Journal on Scientific Computing》 被...
A New Method for Degraded Color Image Binarization Based on Adaptive Lightning on Grayscale Versions(Image Processing and Video Processing) objective of this work is to solve a nonlinear problem concerning the binarization quality, that is, to achieve edge enhancement and noise reduction in ... NOM...
[29] I. Abdou and W. Pratt, “Quantitative Design and Evaluation of Enhancement/Thresholding Edge Detectors,” Proc. IEEE, vol. 67, no. 5, pp. 753-763, May 1979. [30] K. Bowyer, C. Kranenburg, and S. Dougherty, “Edge Detector Evaluation Using Empirical ROC Curves,” Proc. Conf....
Edge enhancement processing block which enhancesedges, normally to make an image appear sharper to a human observer. However, excessive edge enhancement can introduceartifactssuch as halos around high contrast edges, and can also accentuate noise. Excessive edge enhancement can negatively impact gradient...
In this work we propose a simple postprocessing technique for edge enhancement and ringing-artifact reduction in subband-coded images. The proposed technique employs morphological filtering for preliminary image simplification and uses a novel dual-window nonlinear operator for subsequent edge enhancement. ...
curveletdeblurringdeconvolutionimage denoisingnonnegative Garrote shrinkageundecimated wavelet transformIn this letter, we show that the performance of image denoising... Mignotte,M. - 《IEEE Signal Processing Letters》 被引量: 21发表: 2007年 A Hybrid Image Enhancement Technique for Noisy Dim Images Usin...