Convolutional filters can be visually interrogated. You can see exactly which hits it makes at every layer of each filter. There's some cool videos on YouTube i

Convolutional filters can be visually interrogated. You can see exactly which hits it makes at every layer of each filter. There's some cool videos on YouTube illustrating it. You can't tell as the end user, but the developers don't have to theorize about what is matching. Not with the tools we have these days.