Let's say for cloaking one fades the properties of the ship gradually to 100 percent of the surrounding environment.
Would it be possible to have a ship's environment map be "reversed" so that well...lets say a ship is cloaked and parallel between two backgrounds: a purple nebula and a planet.
planet blah blah & left observer --- Cloaked Ship ----- purple nebula & right observer
well my idea is, say some ship from the left side, the observer, looks at the cloaked ship.
Normally, the left observer will see the reflection of the planet on the 100% reflective "cloaked ship". BUT...what if the cloaked ship's LEFT side reflected the environment to its RIGHT, and the RIGHT reflected the LEFT environment? and TOP OF the ship reflecting whats UNDER the ship, and the SHIP's FRONT reflecting whats BEHIND the ship...
Such a thing would probably be a near-perfect Klingon Bird of Prey Effect! Ideally, looking at the ship from the nebula you would see the planet and a slight distortion...

unfortunately i have no idea how to do something like this.