Multiple Scattering

:

extinction coefficient

:

phase angle of

w

and

w

'

:

optical length

light intensity at P in direction

I

(

P

,

w

)

=

I

(

P

s

,

w

)

exp

(

?

t

(

P

P

s

))

+

br

(

s

)

exp

(

?

t

(

P

(

s

)

P

))

1

4

p

F

(

q

)

I

(

P

,

w

')

d

w

'

4

p

ds

s

=

0

S

b

t

q

w

NM

matrix equations should be solved

N

:Voxels,

M

: directions

sparse matrix

strong forward scattering

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