手書き文字認識 - Siv3D/Reference-JP GitHub Wiki

# include <Siv3D.hpp>

void Main()
{
    const HandwritingRecognizer recognizer(L"Example/Hiragana.model");
    const Font font(34);

    Image image(400, 400, Palette::White);

    DynamicTexture texture(image);

    Array<Array<Point>> pointsList;

    while (System::Update())
    {
        texture.draw();

        if (Input::MouseL.pressed)
        {
            if (Input::MouseL.clicked)
            {
                pointsList.emplace_back();
            }

            pointsList.back().push_back(Mouse::Pos());

            const Point from = Input::MouseL.clicked ? Mouse::Pos() : Mouse::PreviousPos();

            Line(from, Mouse::Pos()).overwrite(image, 8, Palette::Blue);

            texture.fill(image);
        }

        if (Input::MouseR.clicked)
        {
            pointsList.clear();

            image.fill(Palette::White);

            texture.fill(image);
        }

        const auto results = recognizer.recognize(image.size, pointsList);

        for (auto i : step(int(results.size())))
        {
            const String text = results[i].character;

            const double score = results[i].score;

            const Rect rect(440, 20 + i * 70, 120, 60);

            rect.draw(HSV(40, 1.0, Saturate(score + 1.0)));

            font(text).drawCenter(rect.center, Palette::Black);
        }
    }
}