CAM Focus Abnormal

[zzh-ecnu]

Hello, i run the grad cam on my two projects, one is about face recognition, and the another is about video action recognition.

However, the result image of CAM focus on the corner of the image, it didn't make sense that the recognition foundation of two tasks is from the corner part of the image. Right?

I feel so puzzled about that and could someone response to me? Thanks very much~