what and what this number down here says is that the density of horizontal edges you know in the lower right hand quadrant of my image is 0.5 and in case you're getting the sense that sort of like oh my god what on earth is going on there this seems hardly complicated how interrupts it will come up with this piece of code you know that's that's that's the point and sadly this is the way that a lot of computer vision is done today so we'll probably this notion of a feature representation is pervasive throughout machine learning in fact I