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[WIP] [Option 1] Handle TIFFs with more than one image #17

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[WIP] [Option 1] Handle TIFFs with more than one image #17

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2 changes: 1 addition & 1 deletion src/GeoTIFF.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@

module GeoTIFF

using TiffImages: AbstractTIFF, DenseTaggedImage, WidePixel
using TiffImages: AbstractTIFF, DenseTaggedImage, StridedTaggedImage, WidePixel
using ColorTypes: Colorant, Gray
using MappedArrays: mappedarray
using StaticArrays: SVector, SMatrix, SA
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11 changes: 9 additions & 2 deletions src/image.jl
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Expand Up @@ -15,7 +15,7 @@ to get the metadata and the image with corrected axes, respectively.
* The [`GeoTIFF.image`](@ref) function is necessary because
the GeoTIFF format swaps the order of the image axes;
"""
struct GeoTIFFImage{T,N,I<:AbstractTIFF{T,N}} <: AbstractArray{T,N}
struct GeoTIFFImage{T,I<:AbstractMatrix{T}} <: AbstractMatrix{T}
tiff::I
metadata::Metadata
end
Expand Down Expand Up @@ -59,4 +59,11 @@ channel(geotiff::GeoTIFFImage, i) = mappedarray(c -> channel(c, i), image(geotif
Base.size(geotiff::GeoTIFFImage) = size(geotiff.tiff)
Base.getindex(geotiff::GeoTIFFImage, i...) = getindex(geotiff.tiff, i...)
Base.setindex!(geotiff::GeoTIFFImage, v, i...) = setindex!(geotiff.tiff, v, i...)
Base.IndexStyle(::Type{GeoTIFFImage{T,N,I}}) where {T,N,I} = IndexStyle(I)
Base.IndexStyle(::Type{GeoTIFFImage{T,I}}) where {T,I} = IndexStyle(I)

struct GeoTIFFImages{I<:GeoTIFFImage} <: AbstractVector{I}
geotiffs::Vector{I}
end

Base.size(geotiff::GeoTIFFImages) = size(geotiff.geotiffs)
Base.getindex(geotiff::GeoTIFFImages, i) = getindex(geotiff.geotiffs, i)
15 changes: 11 additions & 4 deletions src/load.jl
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Expand Up @@ -15,17 +15,24 @@ The keyword arguments are forward to the `TiffImages.load` function.
* [`ModelTransformation`](@ref) with `A` as identity matrix and `b` as vector of zeros.
"""
function load(fname; kwargs...)
geotiff(img, ifd) = GeoTIFFImage(img, _getmetadata(ifd))
tiff = TiffImages.load(fname; kwargs...)
metadata = _getmetadata(tiff)
GeoTIFFImage(tiff, metadata)
ifds = TiffImages.ifds(tiff)
if tiff isa StridedTaggedImage
GeoTIFFImages(geotiff.(tiff, ifds))
elseif ndims(tiff) == 3
imgs = eachslice(tiff, dims=3)
GeoTIFFImages(geotiff.(imgs, ifds))
else
geotiff(tiff, ifds)
end
end

# -----------------
# HELPER FUNCTIONS
# -----------------

function _getmetadata(tiff)
ifd = TiffImages.ifds(tiff)
function _getmetadata(ifd)
geokeydirectory = _gettag(ifd, GeoKeyDirectoryTag, GeoKeyDirectory)
geodoubleparams = _gettag(ifd, GeoDoubleParamsTag, GeoDoubleParams)
geoasciiparams = _gettag(ifd, GeoAsciiParamsTag, GeoAsciiParams)
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