Module: Credo::Detector

Defined in:
lib/credo/detector.rb,
lib/credo/detector/version.rb

Defined Under Namespace

Classes: Error

Constant Summary collapse

VERSION = 
"0.1.3"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Attribute Details

#last_ping ⇒ Object (readonly)

Returns the value of attribute last_ping.



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# File 'lib/credo/detector.rb', line 11

def last_ping
  @last_ping
end

#threshold ⇒ Object (readonly)

Returns the value of attribute threshold.



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# File 'lib/credo/detector.rb', line 11

def threshold
  @threshold
end

Class Method Details

.detect(device_id: 0, threshold: 60) ⇒ Object 



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# File 'lib/credo/detector.rb', line 15

def self.detect(device_id: 0, threshold: 60)
  Framegrabber.open(device_id)

  detections = 0

  loop do
    grab_frame!
    sleep(0.000001)
    subpixels = @frame.flatten

    next print "\rToo much light detected, please cover your camera" if too_bright?(subpixels, threshold)
    print "\rBrightest subpixel: #{subpixels.max}"
    next if subpixels.max < threshold

    detections += 1

    multi_detections = 0
    @frame.each.with_index do |row, x|
      row.each.with_index do |pixel, y|
        next if pixel.max < threshold

        multi_detections += 1

        cropped = crop(x, y)
        filename = "detections/Sample no. #{detections}:#{multi_detections}.png"

        save_hit(cropped, filename)
        puts "\n#{filename} saved"
      end
    end
  end
ensure
  Framegrabber.release
  puts "Camera disabled"
end