Patent ID: 11861791
Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 2:
3. The device according to claim 1, wherein volumes of four sub-tetrahedrons formed of the interpolation point and arbitrary three vertices in the tetrahedron are calculated based on following formulas respectively,

V1=b*S1/3=b*L2/6

V2=r*S2/3=r*L2/6

V3=h3*S3/3=(g−r)*L2/6

V4=h4*S4/3=(L−b−g)*L2/6

wherein, V1 represents a volume of a first sub-tetrahedron, (r, g, b) represents coordinates of the interpolation point in the sampling space, S1 represents an area of a triangle formed of three vertices on a same surface of the cube, L represents the side length of a cube formed of nearby eight sampling points surrounding the interpolation point in the sampling space, V2 represents a volume of a second sub-tetrahedron, S2 represents an area of a triangle formed of three vertices on an another same surface of the cube, V3 represents a volume of a third sub-tetrahedron, S3 represents an area of a triangle formed of three vertices that are not all on a same surface of the cube, h3 represents a distance from the interpolation point to the triangle formed of the three vertices that are not on a same surface of the cube, h3=√{square root over (2)}*(L−r)−{L−[g−(L−r)]}/√{square root over (2)}, S3=S4=√{square root over (2)}/2*L2, V4 represents a volume of a fourth sub-tetrahedron, S4 represents an area of another triangle formed of three vertices that are not all on a same surface of the cube, and h4 represents a distance from the interpolation point to the another triangle formed of three vertices that are not on a same surface of the cube, h4=[L−(b−g)]/√{square root over (2)}−√{square root over (2)}*g.