Question

我设法将EmguCV集成到Unity3D中并编写了一个有一些小问题的转换器

第1步将Unity3D纹理转换为OpenCV图像

public static Image<Bgr, byte> UnityTextureToOpenCVImage(Texture2D tex){
    return UnityTextureToOpenCVImage(tex.GetPixels32 (), tex.width, tex.height);
}

public static Image<Bgr, byte> UnityTextureToOpenCVImage(Color32[] data, int width, int height){

    byte[,,] imageData = new byte[width, height, 3];


    int index = 0;
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            imageData[x,y,0] = data[index].b;
            imageData[x,y,1] = data[index].g;
            imageData[x,y,2] = data[index].r;

            index++;
        }
    }

    Image<Bgr, byte> image = new Image<Bgr, byte>(imageData);

    return image;
}

第2步将OpenCV图像转换回Unity3D纹理

public static Texture2D OpenCVImageToUnityTexture(Image<Bgr, byte> openCVImage, GameObject check){
    return OpenCVImageToUnityTexture(openCVImage.Data, openCVImage.Width, openCVImage.Height, check);
}

public static Texture2D OpenCVImageToUnityTexture(byte[,,] data, int width, int height, GameObject check){

    Color32 [] imageData = new Color32[width*height];

    int index = 0;
    byte alpha = 255;

    for (int y = 0; y < width; y++) {
        for (int x = 0; x < height; x++) {
            imageData[index] = new Color32((data[x,y,2]),
                                           (data[x,y,1]),
                                           (data[x,y,0]),
                                           alpha);
            check.SetActive(true);
            index++;
        }
    }

    Texture2D toReturn = new Texture2D(width, height, TextureFormat.RGBA32, false);
    toReturn.SetPixels32(imageData);
    toReturn.Apply ();
    toReturn.wrapMode = TextureWrapMode.Clamp;

    return toReturn;
}

编译器不会抛出任何错误，但有些错误始终存在。看看自己：cats。左侧是原始图像，右侧是转换后的图像。你可以看到有更多的猫，那应该是...... 有人有任何线索吗？

由于在所有像素中迭代两次，它也很慢。有没有更好的解决方案？

修改

这是我绘制GUITextures的代码：

public GameObject catGO;

GUITexture guitex;
Texture catTex;

void Start () {
    guitex = GetComponent<GUITexture> ();
    catTex = catGO.GetComponent<GUITexture> ().texture;

    Image<Bgr, byte> cvImage = EmguCVUnityInterop.UnityTextureToOpenCVImage((Texture2D)catTex);

    Texture2D converted = EmguCVUnityInterop.OpenCVImageToUnityTexture(cvImage);
    guitex.texture = converted;
}

Answer 1

首先你在2 for for循环中写了check.SetActive（true）所以它的宽度*高度倍。启用GameObject是一项代价高昂的操作。

其次，通过每个像素进行迭代是另一项代价高昂的操作。例如，如果您有图像2560x1600，那么您有超过4百万次迭代。

尝试将TextureWrapMode更改为Repeat（我知道这听起来很愚蠢：]）

EmguCV和Unity3D互操作

1 个答案: