Gray image. Empty data?

C++
1

Hello, i’m new here but i found a problem which i can’t resolve.

void Image_To_Map::photo_patch_windows()
{
using namespace cv;
Mat img = imread(F_O.backslashes_to_slashes(pwstr_to_string(LoadFile(1))));
while (1)
{
imshow(“Image”, img);
}

It’s my code, i’m loading .png image with alpha channel. Problem is it doesn’t load RGBA values from image…

Size is corrent, only colors doesn’t.

Screenshot_1
Screenshot_1653×524 24.2 KB

2

you need a corresponding waitKey(20); after the imshow() ,
– else nothing gets rendered.

3

while (1)
{
namedWindow(“Image”);
imshow(“Image”, img);
waitKey(20);
}

Now it didn’t show a window also, with creating a namedWindow or without.

4

img.empty() is that true or not?

5

No, array isn’t empty. So img.empty() return false, size of img.total() is 307200 (correct value based on image size 640x480)

6

that’s a while-true loop with a waitKey. that should have worked. or you’re doing something else. please prepare a Minimal Reproducible Example.

what’s the value of img.shape?