Qualify use of centered

 is exported by both ImageFiltering and OffsetArrays. This causes issues, as both packages are using within, so the name is ambiguous. Fix by (1) explicitly calling OffsetArrays.centered (2) import rather than using ImageFiltering.

src/ImageQualityIndexes.jl

@@ -5,7 +5,8 @@ using ImageCore
 # Where possible we avoid a direct dependency to reduce the number of [compat] bounds
 using ImageCore.MappedArrays
 using ImageCore: NumberLike, Pixel, GenericImage, GenericGrayImage
-using ImageDistances, ImageFiltering
+using ImageDistances
+import ImageFiltering: KernelFactors, kernelfactors, imfilter
 using Statistics: mean, std
 using Base.Iterators: repeated, flatten
 

src/msssim.jl

@@ -42,7 +42,7 @@ struct MSSSIM{A, N} <: FullReferenceIQI
         all(x-> x>=0, flatten(W)) || throw(ArgumentError("α, β, γ should be non-negative for all scales, instead it's $(W)"))
         sum(flatten(W)) == 0 && throw(ArgumentError("MS-SSIM must have at least one weight > 0"))
 
-        kernel = centered(kernel)
+        kernel = OffsetArrays.centered(kernel)
         if num_scales ≠ length(W)
             W ≠ MSSSIM_W && @warn "truncate MS-SSIM weights to scale $num_scales"
         end

src/ssim.jl

@@ -54,7 +54,7 @@ struct SSIM{A<:AbstractVector} <: FullReferenceIQI
         ndims(kernel) == 1 || throw(ArgumentError("only 1-d kernel is valid"))
         issymetric(kernel) || @warn "SSIM kernel is assumed to be symmetric"
         all(W .>= 0) || throw(ArgumentError("(α, β, γ) should be non-negative, instead it's $(W)"))
-        kernel = centered(kernel)
+        kernel = OffsetArrays.centered(kernel)
         new{typeof(kernel)}(kernel, W, crop)
     end
 end