CODEWITHSUNDEEP
opencv
anti
anti

Reputation: 3125

openCv, create a Mat from a vector of BGR data?

I have an array of pixel data that makes up an image. The data is in the format:

vector<FColor> ColorBuffer;

where FColor is a struct like this:

struct FColor
    {
        uint8 B;
        uint8 G;
        uint8 R;
        uint8 A;
    };

I have the image size (Width, Height).

What i need to do is convert this data to a cv::Mat.

I am trying:

cv::Mat tester = cv::Mat(Width, Height, CV_8UC3);
    for (int i = 0; i < Width; i++)
    {
        for (int j = 0; j < Height; j++)
        {
            cv::Vec3d px(ColorBuffer[i + j].B, ColorBuffer[i + j].G, ColorBuffer[i + j].R);

            tester.at<cv::Vec3d>(j, i) = px;

        }
    }

But this gives me a scrambled image. Where am I going wrong here? Should i be using something else in place of cv::Vec3d? Or do i have the logic wrong?

Upvotes: 1

Views: 527

Answers (1)

Anton Malyshev
Anton Malyshev

Reputation: 8851

The index for a point inside ColorBuffer seems to be incorrect, instead of 

ColorBuffer[i + j]

you should use something like

ColorBuffer[i + j*Width]

Upvotes: 1

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