In
image processing, the free boundary condition is the convention used when applying a
convolution kernel
In mathematics (in particular, functional analysis), convolution is a mathematical operation on two functions ( and ) that produces a third function (f*g) that expresses how the shape of one is modified by the other. The term ''convolution'' ...
to a
digital image in which pixel locations that lie outside the image boundaries are interpreted as having a value of zer
The question of what value to assign out-of-bounds pixels may arise, for instance, when applying a 3×3 kernel to the corner pixel in an image.
Image processing
{{Compu-graphics-stub