首页>
外国专利>
method for smoothing of the levels effect in vergu00f6sserten images of low resolution
method for smoothing of the levels effect in vergu00f6sserten images of low resolution
展开▼
机译:分辨率低的水平图像中的水平效果平滑的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method in the field of image enhancement is described for smoothing the staircase effect in electronic images. These staircases may be introduced by electronic zooming of an original image having a low spatial resolution or by the application of a lossy compression algorithm, such as JPEG, to the image data. According to one example, for each pixel of the image local gradients are computed according to four directions. A first direction associated with the highest local gradient is selected. In order to smooth the image in a second direction, orthogonal to the first direction, the pixel value is changed according to the values of pixels situated along the second direction in the neighbourhood of the pixel. Optionally, the smoothed image data may be subsequently sharpened by a method including the use of gradients.
展开▼