snippets about Google Vision usage (for DevFest Siberia 2016)

google_vision.rb

ENV["GCLOUD_KEYFILE"] = "./key.json"
require "gcloud"
GV = Gcloud.new("my_app").vision

GV.annotate(
  GV.image("./google_vision/temp.jpg"),
  labels: true,
).gapi.to_h


##############################


(L1.keys & L2.keys).empty?

(L1.keys & L2.keys).size

(L1.keys & L2.keys).size / (L1.keys | L2.keys).size

(L1.keys & L2.keys).map do |label|
  L1[label] * L2[label] / popularity[label]
end.reduce(:+)

(L1.keys | L2.keys).map do |label|
  ((L1[label] || 0) - (L2[label] || 0)).abs
end.reduce(:+)

(L1.keys & L2.keys).map do |label|
  L1[label] * L1[label] / L1.values.reduce(:+) *
  L2[label] * L2[label] / L2.values.reduce(:+)
end.reduce(:+)


##############################


ENV["PHASH_LIB"] = "/usr/local/lib/libpHash.dylib"
require "phash/image"

Phash.image_similarity(
  Phash.image_hash(image_1_filename),
  Phash.image_hash(image_2_filename)
) > 0.7