peak detectors

[Emmanuelle Gouillart]

	Hi list,

	just a quick survey: which algorithms are you using for peak
detection (detection of local maxima in a grayscale image), and which
ones are you most satisfied of? We were wondering about the existence of
good peak detectors during the scikit-image sprint, following
difficulties with existing ones such as our feature.peak_local_max (see
for example the discussion in
https://github.com/scikit-image/scikit-image/pull/1248).

	Cheers,
	Emma