Class: Cardreader::Vision

Inherits:
Object
  • Object
show all
Defined in:
lib/cardreader/vision.rb

Instance Method Summary collapse

Constructor Details

#initialize(key) ⇒ Vision

Returns a new instance of Vision.



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# File 'lib/cardreader/vision.rb', line 4

def initialize(key)
	@key = key
end

Instance Method Details

#post(image) ⇒ Object 



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# File 'lib/cardreader/vision.rb', line 8

def post(image)
	uri = "https://vision.googleapis.com/v1/images:annotate?key=#{@key}"
	base64_image = Base64.strict_encode64(File.new(image, 'rb').read)
	body = {
 		requests: [{
   		image: {
     		content: base64_image
   		},
   		features: [
     		{
       		type: 'TEXT_DETECTION',
       		maxResults: 1
     		}
   		]
 		}]
	}.to_json
	
	uri = URI.parse(uri)
	https = Net::HTTP.new(uri.host, uri.port)
	https.use_ssl = true
	request = Net::HTTP::Post.new(uri.request_uri)
	request["Content-Type"] = "application/json"
	response = https.request(request, body)
	
	#text = JSON.parse(response.body)["responses"][0]["fullTextAnnotation"]["text"]
	
	
	blocks = JSON.parse(response.body)["responses"][0]["fullTextAnnotation"]["pages"][0]["blocks"]
	
	page = []
	blocks.each do |block|
		text = ""
		block["paragraphs"][0]["words"].each do |word|
		text += " "
			word["symbols"].each do |symbol|
				text += symbol["text"]
			end
		end
		page << text
	end
	return page.join("\n")
end