画像の代わりにQRコードのビット配列をデコードできるライブラリがあるのではないかと思っていました。たとえば、次のようになります。
{
{1,1,1,1,1,1,1,0,0,0,1,0,1,0,1,1,1,1,1,1,1},
{1,0,0,0,0,0,1,0,1,0,1,0,1,0,1,0,0,0,0,0,1},
{1,0,1,1,1,0,1,0,1,0,1,1,0,0,1,0,1,1,1,0,1},
{1,0,1,1,1,0,1,0,0,0,0,0,1,0,1,0,1,1,1,0,1},
{1,0,1,1,1,0,1,0,1,1,1,1,1,0,1,0,1,1,1,0,1},
{1,0,0,0,0,0,1,0,1,1,1,0,0,0,1,0,0,0,0,0,1},
{1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,1,1,1,1,1,1},
{0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0},
{1,1,0,1,0,0,1,1,0,0,1,1,1,0,1,1,1,0,1,1,0},
{1,1,1,1,1,1,0,0,1,0,0,1,0,1,0,1,0,1,1,1,1},
{0,1,1,0,0,0,1,1,0,1,1,1,0,0,1,1,1,1,1,0,1},
{1,0,0,1,1,0,0,0,0,0,1,0,1,1,1,1,1,0,0,1,1},
{0,1,1,0,1,1,1,1,0,0,1,1,0,1,1,1,0,0,1,0,0},
{0,0,0,0,0,0,0,0,1,1,0,0,0,1,1,0,1,0,1,0,0},
{1,1,1,1,1,1,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0},
{1,0,0,0,0,0,1,0,0,1,1,0,0,0,1,0,0,0,1,1,1},
{1,0,1,1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,1,1,1},
{1,0,1,1,1,0,1,0,1,0,0,0,0,1,1,1,0,0,0,1,1},
{1,0,1,1,1,0,1,0,0,1,1,1,0,1,1,1,0,1,1,0,1},
{1,0,0,0,0,0,1,0,1,0,1,1,1,0,0,1,0,1,0,0,0},
{1,1,1,1,1,1,1,0,1,0,1,0,0,1,0,1,0,0,1,1,0}
}
「こんにちは」になります。
画像機能は必要ありません。