一种高效的逆半调算法

An Efficient Approach for Inverse Halftoning

论文提出了一种快速的逆半调算法,在高斯低通滤波的基础上,通过带通滤波提取边界信息,并使用界限函数和中值滤波修正边界映像,最后合成逆半调结果。实验证明该算法和现有算法相比计算速度快,输出图像信噪比高。

A fast inverse halftoning method is proposed.After the Gaussian lowpass filter,edge information is captured using bandpass filter.By threshold function and median filter,the refined edge map is gotten and all of this lead to the result.The experiment shows this method is faster and more efficient than those available including wavelet.