code: def read_image(filename):
      
      
      with Image.open(filename) as image_source:
          data = [list(pixel) for pixel in image_source.getdata()]
          return data
docs: !
      @brief Returns image as N-dimension (depends on the input image) matrix, where one element of list describes pixel.
      
      @param[in] filename (string): Path to image.
      
      @return (list) Pixels where each pixel described by list of RGB-values.