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EdwardBerman committed Oct 22, 2024
1 parent 218c98e commit 7088011
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101 changes: 101 additions & 0 deletions shopt/analyticLBFGS.jl
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include("radialProfiles.jl")

#=
Functions for Cost and Gradient used in the Optimize step with LBFGS
NB: Reparameterization for [s, g1, g2] via [σ, e1, e2] to constraint update steps inside R+ x B_2(r)
=#

function cost(params; r = r, c= c, starL=starCatalog[iteration], radial=fGaussian, AnalyticStampSize=AnalyticStampSize, get_middle_nxn=get_middle_nxn)
Totalcost = 0
σ = params[1]
s_guess = σ^2
e1_guess = params[2]
e2_guess = params[3]
ellipticity = sqrt((e1_guess)^2 + (e2_guess)^2)
normG = sqrt(1 + 0.5*( (1/ellipticity^2) - sqrt( (4/ellipticity^2)+ (1/ellipticity^4) ) ))
ratio = ellipticity/normG
g1_guess = e1_guess/ratio
g2_guess = e2_guess/ratio

starL = get_middle_nxn(starL, AnalyticStampSize)
r = AnalyticStampSize
c = AnalyticStampSize

sum = 0
for u in 1:r
for v in 1:c
try
sum += radial(u,v, g1_guess, g2_guess, s_guess, r/2,c/2)
catch
sum += 0
end
end
end
A_guess = 1/sum

for u in 1:r
for v in 1:c
if isnan(starL[u,v])
Totalcost += 0
else
Totalcost += 0.5*(A_guess*radial(u, v, g1_guess, g2_guess, s_guess, r/2, c/2) - starL[u, v])^2
end
end
end
return Totalcost
end


function costD(params; r=r, c=c, starL=pixelGridFits[iteration], radial=fGaussian, AnalyticStampSize=AnalyticStampSize, get_middle_nxn=get_middle_nxn)
Totalcost = 0
σ = params[1]
s_guess = σ^2
e1_guess = params[2]
e2_guess = params[3]
ellipticity = sqrt((e1_guess)^2 + (e2_guess)^2)
normG = sqrt(1 + 0.5*( (1/ellipticity^2) - sqrt( (4/ellipticity^2)+ (1/ellipticity^4) ) ))
ratio = ellipticity/normG
g1_guess = e1_guess/ratio
g2_guess = e2_guess/ratio

starL = get_middle_nxn(starL, AnalyticStampSize)
r = AnalyticStampSize
c = AnalyticStampSize

sum = 0
for u in 1:r
for v in 1:c
try
sum += radial(u,v, g1_guess, g2_guess, s_guess, r/2,c/2)
catch
sum += 0
end
end
end
A_guess = 1/sum

for u in 1:r
for v in 1:c
if isnan(starL[u,v])
Totalcost += 0
else
Totalcost += 0.5*(A_guess*radial(u, v, g1_guess, g2_guess, s_guess, r/2, c/2) - starL[u, v])^2
end
end
end
return Totalcost
end

function g!(storage, p)
grad_cost = ForwardDiff.gradient(cost, p)
storage[1] = grad_cost[1]
storage[2] = grad_cost[2]
storage[3] = grad_cost[3]
end

function gD!(storage, p)
grad_cost = ForwardDiff.gradient(costD, p)
storage[1] = grad_cost[1]
storage[2] = grad_cost[2]
storage[3] = grad_cost[3]
end
14 changes: 14 additions & 0 deletions shopt/argparser.jl
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#=
Function to parse arguments from the command line
=#

function process_arguments(args)
fancyPrint("Parsing Arguments")
configdir = args[1]
println("━ Config Directory: ", configdir)
outdir = args[2]
println("━ Output Directory: ", outdir)
catalog = args[3]
println("━ Catalog: ", catalog)
end

12 changes: 12 additions & 0 deletions shopt/chisq.jl
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function chisq_cost(params; starL=starCatalog[iteration], weight_map=errVignets[iteration])
pixel_values = params
chisq = sum(x -> isfinite(x) ? x : 0, (pixel_values .- vec(starL)) .^ 2 ./ vec(weight_map))
return chisq
end


function chisq_g!(storage, p)
chisq_grad_cost = ForwardDiff.gradient(chisq_cost, p)
storage[1:length(chisq_grad_cost)] = chisq_grad_cost
end

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