OpenCV错误:cv::Mat第522行中的断言失败

调试时没有出现错误,但当我尝试执行该函数时,出现以下错误:

OpenCV错误:在cv::Mat::Mat文件C:\OpenCV\OpenCV master\modules\core\src\matrix中,断言失败(0<=roi.x&0<=roi.width&roi.x+roi.width<=m.cols&0<=roi.y&0<=roi.height&roi.y+roi.height<=m.rows)。cpp,第522行

这是我的代码:

void divideImage(Mat input_image, vector<Mat> output_images, int width_fraction, int height_fraction ) {

int width = input_image.rows / width_fraction - 1;
int height = input_image.cols / height_fraction - 1;

    for (int w = 0; w < input_image.rows; w+=width) {
        for (int h = 0; h < input_image.cols; h+=height) {
            Mat tiles = input_image(Rect(w, h, width, height));
            output_images.push_back(tiles);
        }
    }
}



int main(int argc, char** argv)
{

// Get parameters from command line
CommandLineParser parser(argc, argv, keys);
String image_path1 = parser.get<String>(0);

    if (image_path1.empty())
    {
        help();
        return -1;
    }

// Load image 
cv::Mat img_1_rgb = imread(image_path1, 1);
Mat img_1;
cvtColor(img_1_rgb, img_1, CV_BGR2GRAY);

vector<Mat> output_images(4);

divideImage(img_1, output_images, 2, 2);

我的投资回报率似乎有些出界。

 void divideImage(Mat input_image, vector<Mat> output_images, int width_fraction, int height_fraction ) {

 int width = (input_image.cols / width_fraction) - 1;
 int height = (input_image.rows / height_fraction) - 1;

for (int w = 0; w < input_image.cols-width_fraction*width_fraction; w+=width) {
    for (int h = 0; h < input_image.rows-height_fraction*height_fraction; h+=height) {
        Mat tiles = input_image(Rect(w, h, width, height));
        output_images.push_back(tiles);
        //cout << w << " " << h << " " << width << " " << height << " " << endl;
    }
}

}