Class: Phashion::Image

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

Constant Summary collapse

DEFAULT_DUPE_THRESHOLD = 
15

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename) ⇒ Image

Returns a new instance of Image.



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# File 'lib/phashion.rb', line 19

def initialize(filename)
  @filename = filename
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/phashion.rb', line 18

def filename
  @filename
end

Instance Method Details

#distance_from(other) ⇒ Object

returns: an Integer representing the hamming distance from :other



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# File 'lib/phashion.rb', line 24

def distance_from(other)
  Phashion.hamming_distance(fingerprint, other.fingerprint)
end

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

Returns:

  • (Boolean) 


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# File 'lib/phashion.rb', line 32

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

  distance_from(other) <= threshold
end

#fingerprint ⇒ Object 



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# File 'lib/phashion.rb', line 38

def fingerprint
  @hash ||= Phashion.image_hash_for(@filename)
end

#mh_distance_from(other) ⇒ Object 



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# File 'lib/phashion.rb', line 28

def mh_distance_from(other)
  Phashion.hamming_distance2(mh_fingerprint, other.mh_fingerprint)
end

#mh_fingerprint ⇒ Object 



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# File 'lib/phashion.rb', line 42

def mh_fingerprint
  @mh_hash ||= Phashion.mh_hash_for(@filename)
end