Depth Map by Laplacian Filter

Description

we used focal stack to calculate the depth. If we convolve an image with Laplacian filter, the sharp features will appear as white points in the result image. In this method, we summed up the values around one point to determine the contrast value of that specific point. We compared the contrast value of one specific point among all the images in the focal stack and determine the image that has the largest value.

Example1 : output of an input image

Example 2 :input and output Depth Map by Laplacian Filter

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https://asp-eurasipjournals.springeropen.com/articles/10.1186/1687-6180-2012-25