误差扩散半色调技术中图像插值方法的比较

Comparison of Image Interpolation Method in Error Diffusion Halftoning

摘要: 比较分析了最近邻插值、双线性插值和双立方插值3种图像放大方法得到的误差扩散半色调图像的质量,并通过基于人眼视觉模型的方法来评价半色调图像质量。实验结果表明,采用图像最近邻插值放大方法得到的误差扩散半色调图像质量最佳。

Abstract: Error diffusion algorithm is one of the commonly used image hafltoning methods.The quality of the halftoning image is directly affected by the different image interpolation methods.We mainly analyzed the quality of error diffusion halftoning images using the nearest neighbor interpolation,bilinear interpolation,and bicubic interpolation.The image quality method based on human visual model was used to evaluate the qualities of the halftoning images.Experiment shows that the image of error diffusion halftoning using the nearest neighbor interpolation is the best.