Table 2.

We summarize the papers mentioned in this article for their optimization variables and target

Art type	Reference	Variable			Objective
		Shape	Color	Reflectance	Appearance	Light distribution
Shadow
Shadow art	[1, 2, 4, 5, 9, 11, 12, 14]	●				●
	[6, 8, 10]		●		●
Self-shadowing images	[15, 16]	●			●
Reflection
Optimizing mirror	[17, 21, 23]	●				●
	[22]	●			●
Optimizing object	[24, 29–32]	●	●		●
	[25, 27]	●			●
Optimizing reflectance	[33–40]			●	●
Refraction
Caustic	[41, 42, 46, 48–58]	●				●
Volumetric displays	[59–64]		●		●
Other refraction art	[65, 66]	●	●		●
	[67]	●				●
	[68]		●			●
Others
Anamorphic objects	[69–71]	●			●
Illusion objects	[72]	●	●		●
	[73]	●			●
Impossible objects	[74, 76–78]	●			●