最終的にうまくいった手順

以下まとめ。

$ brew install gtk+3
$ julia
julia> ]
(v1.0) pkg> add Images
(v1.0) pkg> add TestImages
(v1.0) pkg> add Cairo
(v1.0) pkg> build Cairo
(v1.0) pkg> add ImageView
(v1.0) pkg> add QuartzImageIO
(v1.0) pkg> add ImageMagick

Jupyter notebookで

using ImageView
using Images
using TestImages
img = testimage("mandrill")

# ┌ Info: Precompiling QuartzImageIO [dca85d43-d64c-5e67-8c65-017450d5d020]
# └ @ Base loading.jl:1192

環境によってはHomebrewで事前に入れておくべき画像関連パッケージが、他にもあるかもしれない。

ImageViewインストール時のトラブル

ImageViewのインストールがCairoのbuildのところで失敗して強制終了。

Cairoだけ事前にインストールして、buildしておくことでなぜか解決。

ImageViewインポート時のトラブル

using ImageView

エラーメッセージ

[ Info: Precompiling ImageView [86fae568-95e7-573e-a6b2-d8a6b900c9ef]
WARNING: Method definition _bcs1(Any, Any) in module Broadcast at broadcast.jl:439 overwritten in module ImageFiltering at /Users/username/.julia/packages/ImageFiltering/uDyMQ/src/ImageFiltering.jl:24.
ERROR: LoadError: error compiling top-level scope: could not load library "libgtk-3"
dlopen(libgtk-3.dylib, 1): image not found
Stacktrace:
 [1] include at ./boot.jl:317 [inlined]
 [2] include_relative(::Module, ::String) at ./loading.jl:1044
 [3] include(::Module, ::String) at ./sysimg.jl:29
 [4] top-level scope at none:2
 [5] eval at ./boot.jl:319 [inlined]
 [6] eval(::Expr) at ./client.jl:393
 [7] top-level scope at ./none:3
in expression starting at /Users/username/.julia/packages/Gtk/ADDrn/src/Gtk.jl:43
ERROR: LoadError: Failed to precompile Gtk [4c0ca9eb-093a-5379-98c5-f87ac0bbbf44] to /Users/username/.julia/compiled/v1.0/Gtk/Vjnq0.ji.
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1203
 [3] _require(::Base.PkgId) at ./loading.jl:960
 [4] require(::Base.PkgId) at ./loading.jl:858
 [5] require(::Module, ::Symbol) at ./loading.jl:853
 [6] include at ./boot.jl:317 [inlined]
 [7] include_relative(::Module, ::String) at ./loading.jl:1044
 [8] include(::Module, ::String) at ./sysimg.jl:29
 [9] top-level scope at none:2
 [10] eval at ./boot.jl:319 [inlined]
 [11] eval(::Expr) at ./client.jl:393
 [12] top-level scope at ./none:3
in expression starting at /Users/username/.julia/packages/ImageView/bEIAo/src/ImageView.jl:5
ERROR: Failed to precompile ImageView [86fae568-95e7-573e-a6b2-d8a6b900c9ef] to /Users/username/.julia/compiled/v1.0/ImageView/4mtgY.ji.
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1203
 [3] _require(::Base.PkgId) at ./loading.jl:960
 [4] require(::Base.PkgId) at ./loading.jl:858
 [5] require(::Module, ::Symbol) at ./loading.jl:853

メッセージ自体は長いが、could not load library "libgtk-3"という部分が肝。

Homebrewでgtk+3をインストールすることで解決。

テスト画像読み込み時のトラブル

img = testimage("mandrill")

エラーメッセージ。

All errors:
Errors encountered while loading "/Users/username/.julia/packages/TestImages/6bT9D/images/mandrill.tiff".
   ArgumentError("Package QuartzImageIO not found in current path:\n- Run `import Pkg; Pkg.add(\"QuartzImageIO\")` to install the QuartzImageIO package.\n")
   ArgumentError("Package ImageMagick not found in current path:\n- Run `import Pkg; Pkg.add(\"ImageMagick\")` to install the ImageMagick package.\n")
Fatal error:
ArgumentError: Package QuartzImageIO not found in current path:
- Run `import Pkg; Pkg.add("QuartzImageIO")` to install the QuartzImageIO package.


Stacktrace:
 [1] handle_error(::ArgumentError, ::FileIO.File{FileIO.DataFormat{:TIFF}}) at /Users/username/.julia/packages/FileIO/YJO7Z/src/error_handling.jl:80
 [2] handle_exceptions(::Array{Any,1}, ::String) at /Users/username/.julia/packages/FileIO/YJO7Z/src/error_handling.jl:75
 [3] #load#27(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::FileIO.File{FileIO.DataFormat{:TIFF}}) at /Users/username/.julia/packages/FileIO/YJO7Z/src/loadsave.jl:193
 [4] load(::FileIO.File{FileIO.DataFormat{:TIFF}}) at /Users/username/.julia/packages/FileIO/YJO7Z/src/loadsave.jl:172
 [5] #load#13(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::String) at /Users/username/.julia/packages/FileIO/YJO7Z/src/loadsave.jl:118
 [6] load at /Users/username/.julia/packages/FileIO/YJO7Z/src/loadsave.jl:118 [inlined]
 [7] testimage(::String) at /Users/username/.julia/packages/TestImages/6bT9D/src/TestImages.jl:88
 [8] top-level scope at In[4]:1

パッケージが足りないとのこと。

QuartzImageIOとImageMagickをインストールして解決。