camera_capture.rb

# coding: utf-8

require 'opencv'
require 'fileutils'

dropbox_dir = "/path/to/Dropbox"  # ここだけ自分用に書き換えてください

# 0 番だと Mac のインカメラが選択されてしまうので 1 番を選択
capture = OpenCV::CvCapture.open 1 

# カメラの起動を待つ
sleep(5)

image = capture.query
image = image.resize OpenCV::CvSize.new 640, 360

day = Time.now
day_string  = day.strftime("%Y-%m-%d")
time_string = day.strftime("%H-%M-%S")

dir_path = "#{dropbox_dir}/ouchi-hack/#{day_string}/"
FileUtils.mkdir_p(dir_path) unless FileTest.exist?(dir_path)

path  = "#{dir_path}#{time_string}.jpg"

puts path
image.save path