チャンネルごとのガンマ補正 / OpenCV for Android

channelsGamma.java

private double[] GAMMA_LEVEL_RGB = new double[3];
//こんなかんじの宣言しといて、適当に補正したい値を入れる

public synchronized Mat channelsGamma(Mat inputPicture) {
  Mat channel = new Mat();
	ArrayList<Mat> channels = new ArrayList<Mat>();
	inputPicture.copyTo(channel);
	Core.split(channel, channels);

	for (int i = 0; i < 3; i++) {
		channels.get(i), GAMMA_LEVEL_RGB[i]);
		Mat result = gammaFilter(channels.get(i), GAMMA_LEVEL_RGB[i]);
		//gammaFilterは自作関数
		result.copyTo(channels.get(i));
	}

	Core.merge(channels, channel);
	return channel;
}