Class: AverageHash::Image

Inherits:
Object
  • Object
show all
Defined in:
lib/average_hash/image.rb

Constant Summary collapse

DEFAULT_DUPE_THRESHOLD = 
5

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file_path) ⇒ Image

Returns a new instance of Image.



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# File 'lib/average_hash/image.rb', line 9

def initialize(file_path)
  @file_path = file_path
end

Instance Attribute Details

#file_path ⇒ Object (readonly)

Returns the value of attribute file_path.



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# File 'lib/average_hash/image.rb', line 7

def file_path
  @file_path
end

Instance Method Details

#distance_from(other) ⇒ Object 



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# File 'lib/average_hash/image.rb', line 18

def distance_from(other)
  (fingerprint ^ other.fingerprint).to_s(2).count('1')
end

#duplicate?(other, opts = {}) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/average_hash/image.rb', line 22

def duplicate?(other, opts = {})
  threshold = opts[:threshold] || DEFAULT_DUPE_THRESHOLD
  distance_from(other) <= threshold
end

#fingerprint ⇒ Object 



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# File 'lib/average_hash/image.rb', line 13

def fingerprint
  @average_hash ||= HashingStrategy.new(@file_path).generate_hash
  @average_hash.to_i(2)
end