题目

英语翻译
Many methods are available to characterize the texture of materials directly fromgray-levelimages:theprincipal approaches are statistical,structural,morphological,fractal and spectral (Reed and Buf,1993; Randen and Husoy,1999).Weszka et al.compared the Fourier spectrum,second-order gray level statistics,co-occurrence statistics and gray level run length statistics and found the co-occurrence were the best (Weszka et al.,1976).
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提问时间：2021-01-21

答案

有许多方法可表征纹理的材料直接fromgray - levelimages ：theprincipal办法统计,结构,形态,分形和光谱（芦苇和buf ,1993年; randen和许绥,1999年） .weszka等人.比较傅立叶频谱,二阶灰度级的统计资料,合作的发生,统计和灰度级运行长度的统计,发现合作的发生是最好的（ weszka等人,1976年） .