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KASHIWAビーコン（SatNOGS DBのCSVファイル)からカメラ画像に変換するスクリプト
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| #!/usr/bin/env ruby | |
| # | |
| # GARDENs衛星でSatNOGS CSVファイルからカメラ画像を生成 by JH4XSY/1 | |
| # 2025/1/10 | |
| def find_gaps(list) | |
| # Find the minimum and maximum values in the list. | |
| min_value = list.min | |
| max_value = list.max | |
| # Create an array to store the gaps. | |
| gaps = [] | |
| # Iterate over the range of values from the minimum to the maximum. | |
| (min_value..max_value).each do |value| | |
| # If the value is not in the list, then it is a gap. | |
| if !list.include?(value) | |
| gaps << value | |
| end | |
| end | |
| # Return the array of gaps. | |
| return gaps | |
| end | |
| # ---8<--- | |
| if ARGV.empty? | |
| puts "usage: ruby ext.rb ID" | |
| exit 1 | |
| end | |
| ID = ARGV[0] | |
| pattern = "4A4736594257304A4736594D58303EF0FFF0FF#{ID}" | |
| dummy = " " * 61 + "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" | |
| input = "wip.csv" | |
| output = "foo-#{ID}" | |
| # CSVデータをメモリに読み込む | |
| csv_data = File.readlines(input) | |
| # カメラ画像データを格納する配列 | |
| image_data = [] | |
| # シーケンス番号0から600までを検索 | |
| (0..599).each do |i| | |
| hex_id = format('%04X', i) | |
| target_line = nil | |
| # 各行を走査してパターンに一致する行を探す | |
| csv_data.each do |line| | |
| if line.include?(pattern + hex_id) | |
| target_line = line | |
| break # 一致する行が見つかったらループを抜ける | |
| end | |
| end | |
| # 一致する行がなかった場合はdummy文字列を追加 | |
| image_data << (target_line || dummy) | |
| # 欠落データの有無をO/Xで表示 | |
| print target_line ? "O" : "." | |
| # EOIを検出してループを抜ける | |
| if target_line&.include?("FFD9"+"00") | |
| puts "\nFFD9 found, stopping process." | |
| output = output + ".jpg" | |
| break | |
| end | |
| if target_line&.include?("49454E44") | |
| puts "\n49454E44 found, stopping process." | |
| output = output + ".png" | |
| break | |
| end | |
| end | |
| print("\n") | |
| # 抽出したデータをファイル書き出し | |
| f=open("foo.hex","w") | |
| f.puts image_data | |
| f.close | |
| # 抽出したデータのギャップを探す | |
| list = [] | |
| File.open("foo.hex", "r") do |f| | |
| f.each_line do |line| | |
| seq = line.slice(60, 4) | |
| num = seq.to_i(16) | |
| list << num | |
| end | |
| end | |
| gaps = find_gaps(list) | |
| puts "Gap detected : #{gaps}" | |
| # 配列の内容を１つの文字列に結合 | |
| foo_hex = image_data.join | |
| # 画像データだけ切り取る | |
| foo2_hex = foo_hex.lines.map { |line| | |
| line.strip.empty? ? nil : line[64..185] | |
| }.compact.join | |
| # 16進データをバイナリに変換してファイル出力 | |
| # EOIが見つからない場合、拡張子を.jpgに設定 | |
| output += ".jpg" unless output.include?(".") | |
| File.open(output, 'wb') do |file| | |
| file.write([foo2_hex].pack('H*')) | |
| end |
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