The present invention is relates to a method for measuring average line width of line and space patterns in a simplified manner and at high speed without measuring at many positions. An average line width, an average space width, and an average pitch width are calculated from peak intervals of auto-correlation values of a differentiated image of the line and space patterns or peak patterns corresponding to line edges on projection data of the differentiated image.


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> Band model method for modeling atmospheric propagation at arbitrarily fine spectral resolution

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