The second one: This one is even worse, the BMW is very-very visible, and has an intrinsically background on the dials, you will have to use a brush to fine tune... at one point...
Anyway, let's give it a try, Duplicate, on the top one layer Colors ➤ Desaturate ➤ Desaturate in Value (HSV) mode
Then Colors ➤ Levels... and put the layer in "Pin Light" mode
Then Layer ➤ New From Visible, a new layer appear called Visible, make a vertical curve > Colors ➤ Curves... with the top right node (the whites)
Then put that layer in the middle in Addition Mode
Then you can take a smooth edge brush to paint black on the inner edges
In the end, I think it's better to draw those dials from scratch, with the Symmetry Painting tool it would be a piece of cake to make the dial
Anyway, let's give it a try, Duplicate, on the top one layer Colors ➤ Desaturate ➤ Desaturate in Value (HSV) mode
Then Colors ➤ Levels... and put the layer in "Pin Light" mode
Then Layer ➤ New From Visible, a new layer appear called Visible, make a vertical curve > Colors ➤ Curves... with the top right node (the whites)
Then put that layer in the middle in Addition Mode
Then you can take a smooth edge brush to paint black on the inner edges
In the end, I think it's better to draw those dials from scratch, with the Symmetry Painting tool it would be a piece of cake to make the dial
Patrice