How does making a double hologram correct reversed curvature in a real image?

In holography, the real image produced from a single hologram is pseudoscopic, meaning it exhibits a reversed curvature where the depth of the object appears inverted.1

To correct this, a double hologram is created. The process involves two steps:
1. First, a standard hologram of the object is prepared.1
2. Second, this initial hologram is used as the object to create a new, second hologram.1

This technique functions through a double reversal of the image. Much like how a mirror image of text becomes legible when viewed through a second mirror, the second hologram reverses the pseudoscopic real image back to its normal, original orientation. This process ensures that the final reconstructed image accurately represents the depth and contours of the original object.1