Research on Resistor Value Identification Using Image Recognition

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  • 画像認識による抵抗器読み取り手法に関する研究
  • 画像認識による抵抗器読み取り手法に関する研究 : カラーコード画像に重畳する鏡面ハイライトの回避の試み
  • ガゾウ ニンシキ ニ ヨル テイコウキ ヨミトリ シュホウ ニ カンスル ケンキュウ : カラーコード ガゾウ ニ チョウジョウ スル キョウメン ハイライト ノ カイヒ ノ ココロミ
  • －カラーコード画像に重畳する鏡面ハイライトの回避の試み－
  • —Method for Reducing the Effect of Specular Highlights Superimposed on Color-Code Image—

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<p>Specular highlight, which is a direct reflection component of illumination light, is known to be an obstacle when reading color-codes of resistors using image recognition. We propose a method for avoiding the influence of specular highlight through image processing. We have set plural strip-shaped areas on color-codes and extract the color by selecting areas of smaller influence of reflection. We have implemented an algorithm of reading color-codes and conducted reading experiments of resistors having various angle of rotation, which have changing areas of specular highlights. As a result, we have confirmed an identification rate of 99%. We also discuss the changes of the influence of specular highlights due to the rotation of the resistors.</p>

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