opencv - 使用 openCVSharp 在 unity3d 中转换 IPLimage <> texture2d

Question

正如题主所说。我正在尝试在unity3d中实现openCVSharp surf，并且有点卡在从iplimage到texture2d的转换部分。还考虑到此转换过程应至少以 25 fps 运行。所以任何提示或建议都非常有帮助！

Answer 1

可能有点晚了，我现在正在做同样的事情，这是我的解决方案：

void IplImageToTexture2D (IplImage displayImg)
{
    for (int i = 0; i < height; i++)
    {
        for (int j = 0; j < width; j++)
        {
            float b = (float)displayImg[i, j].Val0;
            float g = (float)displayImg[i, j].Val1;
            float r = (float)displayImg[i, j].Val2;
            Color color = new Color(r / 255.0f, g / 255.0f, b / 255.0f);
            videoTexture.SetPixel(j, height - i - 1, color);
        }
    }
    videoTexture.Apply();
}

但这有点慢。仍在努力提高性能。

Answer 2

Texture2D tex = new Texture2D(640, 480);
CvMat img = new CvMat(640, 480, MatrixType.U8C3);

byte[] data = new byte[640 * 480 * 3];
Marshal.Copy(img.Data, data, 0, 640 * 480 * 3);
tex.LoadImage(data);

Answer 3

要提高性能，请使用 Unity3d 的未记录函数 LoadRawTextureData ：

Texture2D IplImageToTexture2D(IplImage img)
{
    Texture2D videoTexture = new Texture2D(imWidth, imHeight, TextureFormat.RGB24, false);
    byte[] data = new byte[imWidth * imHeight * 3];
    Marshal.Copy(img.ImageData, data, 0, imWidth * imHeight * 3);
    videoTexture.LoadRawTextureData(data);
    videoTexture.Apply();
    return videoTexture;
}