Bugfix: update dataloaders.py to fix "resize to 0" (#10558)

* fix bug "resize to 0"

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Use math.ceil() for resize to enforce min floor of 1 pixel

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

utils/dataloaders.py

@@ -737,7 +737,7 @@ class LoadImagesAndLabels(Dataset):
             r = self.img_size / max(h0, w0)  # ratio
             if r != 1:  # if sizes are not equal
                 interp = cv2.INTER_LINEAR if (self.augment or r > 1) else cv2.INTER_AREA
-                im = cv2.resize(im, (int(w0 * r), int(h0 * r)), interpolation=interp)
+                im = cv2.resize(im, (math.ceil(w0 * r), math.ceil(h0 * r)), interpolation=interp)
             return im, (h0, w0), im.shape[:2]  # im, hw_original, hw_resized
         return self.ims[i], self.im_hw0[i], self.im_hw[i]  # im, hw_original, hw_resized