I have a question about something I see in a lot of the mosaics we have constructed using GoPro Hero photos as source imagery. When zoomed pretty far in I notice areas where a sort of blurry swirling distortion happens. I have attached a screen shot of an example of this.
Can anyone shed some light why this happens and is there a way to reduce it?
Is it related to clarity of the photos or maybe the orthorectification process?