Code covered by the BSD License

# deprecated -- Light Field Toolbox v0.2 -- v0.3 now available

### Donald Dansereau (view profile)

26 Apr 2013 (Updated )

A set of tools for working with light field (aka plenoptic) imagery in Matlab

peakdet(v)
```function maxtab=peakdet(v)
% PEAKDET Detect peaks in a vector
%
% [MAXTAB, MINTAB] = PEAKDET(V, DELTA) finds the local
% maxima and minima ("peaks") in the vector V.
% MAXTAB and MINTAB consists of two columns. Column 1
% contains indices in V, and column 2 the found values.
%
% With [MAXTAB, MINTAB] = PEAKDET(V, DELTA, X) the indices
% in MAXTAB and MINTAB are replaced with the corresponding
% X-values.
%
% A point is considered a maximum peak if it has the maximal
% value, and was preceded (to the left) by a value lower by
% DELTA.
%
% Eli Billauer, 3.4.05 (Explicitly not copyrighted).
% This function is released to the public domain; Any use is allowed.
%
% Modified by Abdallah Kassir 13/12/2009

x=1:length(v);
delta=(max(v)-min(v))/4;

maxtab = [];

if delta==0
return;
end

mn = Inf; mx = -Inf;
mxpos = NaN;

lookformax = 0;  %modified

for i=1:length(v)
this = v(i);
if this > mx, mx = this; mxpos = x(i); end
if this < mn, mn = this; end

if lookformax
if this < mx-delta
maxtab = [maxtab ; mxpos mx];
mn = this;
lookformax = 0;
end
else
if this > mn+delta
mx = this; mxpos = x(i);
lookformax = 1;
end
end
end
```