// Make values less than R/G/B of 64 black
ImageEn.Proc.Threshold(CreateRGB(64, 64, 64), CreateRGB(255, 255, 255), CreateRGB(0, 0, 0), CreateRGB(255, 255, 255));

// Make values greater than R/G/B of 192 white
ImageEn.Proc.Threshold(CreateRGB(0, 0, 0), CreateRGB(192, 192, 192), CreateRGB(0, 0, 0), CreateRGB(255, 255, 255));

// Make values with a red value greater than 192 pure red
ImageEn.Proc.Threshold(CreateRGB(0, 0, 0), CreateRGB(192,0, 0), CreateRGB(0, 0, 0), CreateRGB(255, 0, 0));