- (
`pum1`) The original image.

- (
`pum1dim1`) Dimmer version of

`pum1`.- (
`pum1mul1`) Result of pixel multiplying

`pum1dim1`by a factor of 3.- (
`pum1mul2`) Result of pixel multiplying

`pum1dim1`by a factor of 5.- (
`pum1shi1`) Result of bitshifting

`pum1dim1`to the left by*1*bit.- (
`pum1shi2`) Result of bitshifting

`pum1dim1`to the left by*2*bits.