OpenCVForUnity膨胀与腐蚀

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膨胀与腐蚀属于图像的形态学范畴的基本转换函数。形态学通常用于寻找图像中的明显的极大、极小区域，以及求图像的梯度。

膨胀 dilate

膨胀是指将图像（srcMat）与核（kernel）进行卷积。

/// <summary>
/// 膨胀
/// </summary>
void OnDilate()
{
    dstMat = new Mat();
    int ksize = 7;
    Mat kernel = new Mat(ksize, ksize, CvType.CV_32F);
    Imgproc.dilate(srcMat, dstMat, kernel);

    Texture2D t2d = new Texture2D(dstMat.width(), dstMat.height());
    Sprite sp = Sprite.Create(t2d, new UnityEngine.Rect(0, 0, t2d.width, t2d.height), Vector2.zero);
    m_dilateButton.image.sprite = sp;
    m_dilateButton.image.preserveAspect = true;
    Utils.matToTexture2D(dstMat, t2d);
}

腐蚀 erode

腐蚀是膨胀的反操作。

/// <summary>
/// 腐蚀
/// </summary>
void OnErode()
{
    dstMat = new Mat();
    int ksize = 7;
    Mat kernel = new Mat(ksize, ksize, CvType.CV_32F);
    Imgproc.erode(srcMat, dstMat, kernel);

    Texture2D t2d = new Texture2D(dstMat.width(), dstMat.height());
    Sprite sp = Sprite.Create(t2d, new UnityEngine.Rect(0, 0, t2d.width, t2d.height), Vector2.zero);
    m_erodeButton.image.sprite = sp;
    m_erodeButton.image.preserveAspect = true;
    Utils.matToTexture2D(dstMat, t2d);
}

最终效果