Why are there always missing values ​​in the lower left or lower right corner when using unidepthv2 to infer absolute depth?

[XiaolongQian]

Thanks for this outstanding work！ When I use UnidepthV2 to infer a 1280x1920 RGB image, why there are always some missing values ​​in the lower left and lower right corners of the predicted depth map？ The input image and predicted depth map are shown in the figure below. There are missing values ​​in the lower right corner of the predicted depth map.

The inference code I used is from Get started. I would be grateful if you could tell me the reason for this missing value.