对焦成形系统

Proceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Pub Date : 1992-06-15 DOI:10.1109/CVPR.1992.223259

S. Nayar

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引用次数: 135

摘要

描述了一种使用不同焦点级别来获得目标图像序列的焦点形状法。提出了一种和修正拉普拉斯算子，以提供图像聚焦质量的局部度量。将该算子应用于目标的图像序列，以确定一组焦点度量作为每个图像点。建立了一个模型来描述离焦引起的焦距测量值的变化。该模型被深度估计算法用于插值焦点测量值，得到准确的深度估计。一个完全自动化的系统，已经实现了使用光学显微镜和各种工业样品的测试描述。

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Shape from focus system

A shape-from-focus method that uses different focus levels to obtain a sequence of object images is described. A sum-modified-Laplacian operator is developed to provide local measures of the quality of image focus. The operator is applied to the sequence of images of the object to determine a set of focus measures as each image point. A model is developed to describe the variation of focus measure values due to defocusing. This model is used by a depth estimation algorithm to interpolate focus measure values and obtain accurate depth estimates. A fully automated system that has been implemented using an optical microscope and tested on a variety of industrial samples is described.<>

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Proceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition

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