Error when running on KITTI dataset

[antithing]

Hi, I have this code running on KITTI 03, but I see an error and crash. This line

    inline float GetPixelValue(const cv::Mat &img, float x, float y) {
        // boundary check
        if (x < 0) x = 0;
        if (y < 0) y = 0;
        if (x >= img.cols) x = img.cols - 1;
        if (y >= img.rows) y = img.rows - 1;

        // bi-linear interpolate
        uchar *data = &img.data[int(y) * img.step + int(x)];
        float xx = x - floor(x);
        float yy = y - floor(y);
        return float(            //CRASH HERE
                (1 - xx) * (1 - yy) * data[0] +
                xx * (1 - yy) * data[1] +
                (1 - xx) * yy * data[img.step] +
                xx * yy * data[img.step + 1]
        );
    }

On a different frame every time, so it seems random, or a thread issue. What might be causing this?

Also, it looks like g20 is used in place of LEGO, is that correct?

Thanks!

[antithing]

@zha0ming1e sorry to bother you, do you have any idea what might be causing this crash? Thank you!