Android opencv实现多通道分离与合并 Android基于opencv实现多通道分离与合并

时间:2021-06-18 易冬人气:1

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多通道分离

API

public static void split(Mat m, List<Mat> mv)

参数一：m，待分离的多通道图像
参数二：mv，分离后的单通道图像

操作

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    mBinding = DataBindingUtil.setContentView(this, R.layout.activity_channel_split_merge)
    mBgr = Utils.loadResource(this, R.drawable.test)
    val imgList = mutableListOf<Mat>()
    Core.split(mBgr, imgList)
    mChannelB = imgList[0]
    mChannelG = imgList[1]
    mChannelR = imgList[2]
}

通道合并

API

public static void merge(List<Mat> mv, Mat dst)

参数一：mv，需要合并的图像数组，其中每个图像必须拥有相同的尺寸和数据类型
参数二：dst，合并后输出的图像，与mv[0]具有相同的尺寸和数据类型，通道数等于所有输入图像的通道数总和

操作

private fun showBGZero() {
    val zero = Mat.zeros(mBgr.rows(), mBgr.cols(), CvType.CV_8UC1)
    val list = mutableListOf<Mat>()
    list.add(zero)
    list.add(zero)
    list.add(mChannelR)
    val result = Mat()
    Core.merge(list, result)
    showMat(result)
    result.release()
}

private fun showBRZero() {
    val zero = Mat.zeros(mBgr.rows(), mBgr.cols(), CvType.CV_8UC1)
    val list = mutableListOf<Mat>()
    list.add(zero)
    list.add(mChannelG)
    list.add(zero)
    val result = Mat()
    Core.merge(list, result)
    showMat(result)
    result.release()
}

private fun showGRZero() {
    val zero = Mat.zeros(mBgr.rows(), mBgr.cols(), CvType.CV_8UC1)
    val list = mutableListOf<Mat>()
    list.add(mChannelB)
    list.add(zero)
    list.add(zero)
    val result = Mat()
    Core.merge(list, result)
    showMat(result)
    result.release()
}

private fun showSwitchBR() {
    val zero = Mat.zeros(mBgr.rows(), mBgr.cols(), CvType.CV_8UC1)
    val list = mutableListOf<Mat>()
    list.add(mChannelR)
    list.add(mChannelG)
    list.add(mChannelB)
    val result = Mat()
    Core.merge(list, result)
    showMat(result)
    result.release()
}

结果

源码

github.com/onlyloveyd/…

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