We have mapwindow that applies function f on every local patch of an image, which can be seen as the image version of map. We don't have the window version of findall that applies f to each local patch, and return coordinates such that f(window_of_p) == true.
Originally posted in https://github.com/JuliaImages/ImageFiltering.jl/pull/223#pullrequestreview-744624172
We have
mapwindowthat applies functionfon every local patch of an image, which can be seen as the image version ofmap. We don't have the window version offindallthat appliesfto each local patch, and return coordinates such thatf(window_of_p) == true.Why we need this? We can currently do this by returning a dense Bool matrix from
mapwindowand then callfindall, but this would usually be unnecessary and not as performant as the manually written for-loops. For example, the benchmark in https://github.com/JuliaImages/ImageSegmentation.jl/pull/72#issuecomment-910135541