All-focused image generation method, device for same, and recording medium for same, and object height data acquisition method, device for same, and recording medium for same
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United States of America Patent
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Feb 16, 2016
Grant Date -
Nov 19, 2015
app pub date -
Oct 11, 2012
filing date -
Oct 11, 2011
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Abstract
An all-focused image generation method comprises the steps (i) to (vi). The step (i) is a step of taking L images of an object at different focal positions. The step (ii) is a step of acquiring gray scale images of the object at the respective focal positions. The step (iii) is a step of performing multiresolution transform for the gray scale images. The step (iv) is a step of calculating focal position probability distribution regarding the focal positions, for each pixel position. The step (v) is a step of acquiring an optimal focal position for each of the pixel positions. The step (vi) is a step of generating an in-focus image by providing a pixel corresponding to the acquired pixel value to the pixel position. In the step (v), the optimal focal position is approximately calculated by belief propagation.
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