Modern image processing software include inpainting tools for various applications: removing an undesirable feature from an image, restoring damaged parts of old photographs, erasing watermarks, etc. But as concern digital surfaces, the only way of erasing remaining dirt or filling in unread height zones is to apply Laplace’s operator. Laplace’s operator has many advantages: it is easy to implement, it minimizes the surface curvature i.e. no particular relief is created, it is only defined by the damaged zone frontier and the result is the same whatever the software. The major drawback is its excessive smoothness: when the hole to be fill in is large compared to the correlation length, a Laplacian patch contrasts too much with the neighboring relief. When dealing with digital surface study, the problem is not as much the visual aspect of the healing as its potential consequences on the surface parameters. Three alternative healing methods are applied on rough surfaces: a totally...

中文翻译：

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受损的数字表面也应得到真实的修复

现代图像处理软件包括用于各种应用程序的修复工具：从图像中删除不良的功能，恢复旧照片的受损部分，擦除水印等。但是对于数字表面，擦除剩余污垢或填充未读高度区域的唯一方法是应用拉普拉斯的运算符。拉普拉斯的操作员具有许多优点：操作简便，表面曲率最小化（即不会产生特定的起伏），仅由损坏的区域边界定义并且无论使用什么软件，结果都是相同的。主要缺点是过高的平滑度：当要填充的孔比相关长度大时，拉普拉斯斑块与相邻的凸纹形成鲜明对比。在进行数字表面研究时，问题不仅仅在于愈合的视觉效果，还在于其对表面参数的潜在影响。三种可选的修复方法应用于粗糙表面：完全...