Class: Colorscore::Histogram
- Inherits:
-
Object
- Object
- Colorscore::Histogram
- Defined in:
- lib/colorscore/histogram.rb
Instance Method Summary collapse
- #color_counts ⇒ Object
-
#colors ⇒ Object
Returns an array of colors in descending order of occurances.
-
#initialize(image_path, colors = 16, depth = 8) ⇒ Histogram
constructor
A new instance of Histogram.
- #scores ⇒ Object
Constructor Details
#initialize(image_path, colors = 16, depth = 8) ⇒ Histogram
Returns a new instance of Histogram.
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# File 'lib/colorscore/histogram.rb', line 3 def initialize(image_path, colors=16, depth=8) output = `convert #{image_path} -resize 400x400 -format %c -dither None -quantize LAB -colors #{colors} -depth #{depth} histogram:info:-` @lines = output.lines.sort.reverse.map(&:strip).reject(&:empty?) end |
Instance Method Details
#color_counts ⇒ Object
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# File 'lib/colorscore/histogram.rb', line 14 def color_counts @lines.map { |line| line.split(':')[0].to_i } end |
#colors ⇒ Object
Returns an array of colors in descending order of occurances.
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# File 'lib/colorscore/histogram.rb', line 9 def colors hex_values = @lines.map { |line| line[/#[0-9A-F]+/] } hex_values.map { |hex| Color::RGB.from_html(*hex) } end |
#scores ⇒ Object
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# File 'lib/colorscore/histogram.rb', line 18 def scores total = color_counts.inject(:+).to_f scores = color_counts.map { |count| count / total } scores.zip(colors) end |