Linear Algebra, Data Science, Python, Programming, Coding.
white and 255 is totally black, or vice versa. In fact, we can express this photo as a matrix. If the photo is 400×400, then that’s a 400×400 matrix. Each element of that matrix is a number from 0 to 255. It shows the intensity of the color grey in that pixel. That’s how the computer ‘sees’ a