一种保持图像细节的线性空间移变插值新方法

将基于双向梯度的插值点灰度预估和局部纹理强度导向的插值强度自适应控制技术相结合,提出了一种新的自适应图像插值方法.该方法用插值点灰度预估值取代近邻采样值纳人重采样运算,并根据降采样图像的局部空间纹理强度实时调节插值强度,从而在不增大运算开销的前提下,实现了插值重建精度的提升.仿真实验结果说明利用该方法插值重建出的图像具有较高的信噪比PSNR和较低的边缘误差比PEE,且视觉效果更锐利.

A new detail preserving image interpolation method based on linear space variant technique

A new adaptive image interpolation algorithm is presented,which combines the grayscale prediction basedon bi-directional gradient with the local texture oriented interpolation intensity control technique.In the re-sampling process,the algorithm uses the gradient predictions instead of neighboring sampled values to calculate the grayscale of interpolation points,and adaptively adjusts the interpolation intensity according to the local texture strength of downsampled images,which all result in the improvement...