A Novel Ray-Casting Algorithm Using Dynamic Adaptive Sampling

Table 3

Comparison of several distance functions.

Algorithms	LCC	SPOCC	SSIM	MSSIM	PSNR
Without distance function	0.69	0.71	0.792	0.813	29 db
Ray-casting DAS with f1 function	0.72	0.76	0.814	0.839	33 db
Ray-casting DAS with f2 function	0.76	0.79	0.857	0.874	36 db
Ray-casting DAS with f3 function	0.75	0.78	0.849	0.867	35 db
Ray-casting DAS with f4 function	0.86	0.85	0.896	0.918	43 db