pixels are moreover this gives us a alternative way to represent the image instead of representing the image patch using a list of 196 pixel values we can instead using this vector of numbers a 1 through a 64 these are the coefficients multiplying into the basis functions just a few more examples so the method in density attention those represent an image in terms a just appear in it and it turns out that a funeral scientists have done that had to invent a chef have done quantitative comparisons between sparse coding and oh and visual cortical