gives an image in which each pixel represents a sum of all pixels below and to the left of that pixel in image.

Details and Options


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Basic Examples  (2)

Compute the accumulated area of an image:

Accumulated area of a 3D image:

Options  (1)

Method  (1)

The default method is fast, but may have some computation artifacts:

Use Method->"CompensatedSummation" for a more accurate result:

Applications  (1)

Approximate the determinant of the Hessian using 9×9 box filters as in a SURF keypoints detector:

Visualize the function evaluated for every pixel:

Find the position of the peaks in the determinant of the Hessian matrix:

Properties & Relations  (1)

Accumulated pixel values inside an upright rectangle defined by its bottom-left and top-right corners:

Define the upright rectangular area by its bottom-left corner and its width and height:

Accumulating the pixel values of the corresponding subimage yields the same result:

Accumulate pixel values extracted from the original image:

Introduced in 2012
Updated in 2014