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IPfloat32)
I f a v a l u e l ar g e r ( s m a l l er ) t h a n 1 0 0 ( 0 ) t h e
co nv ert ed va l ue i s to be set to 65 535 ( 0) .
Data type: 16 bit unsigned integer
A M P LIT UDE_I M AG E
103
Each pixel of the am plitude matrix denotes the
am ou nt of m odul a te d l i ght ( i e t h e l i gh t f r om t h e
c a m e r a' s a c t i v e i l l u m i n at ion ) whi ch i s r efl ect ed
b y the appropriate objec t. Higher values indi-
ca te h i g her P MD s ig nal str engt hs an d t hus a
l o wer am o un t of no ise on t he corr es pon di ng
distance measurements. T he amplitude value
i s d i r ec t l y d e r i v e d f rom the PMD phase meas-
u r e m e n t s wi t h o u t n o r m al i z a t i o n t o exp o s u r e
t i m e. I n d o u b l e e x p o s u r e m o d e , t h e l a c k o f
normalization may lead (depending on the
choosen exposure times) to inhomogeneous
amplitude im age impression, if the a certain
pixel is taken from the short exposure time and
some of it s neighbors ar e not.
I n v a l i d P M D p i x e l s ( e. g . d u e t o s a t ur a t i o n )
have an amplitude value of 0.
CA RT ES IA N_X_CO M P ONE NT
200
T he X matrix denotes the X-component of the
cartes ian coordinate of a PMD 3D measure-
m e n t . T h e or i g i n o f t h e c a m e r a' s c oo r d i n a t e
s ys t e m i s i n t h e m i d d l e o f t h e l e ns ' f r o nt g l a s s ,
i f t h e e x t r i ns i c p ar a m e t e r s ar e a l l s e t t o 0. D a -
t a t yp e : 1 6 b i t s i g n e d i nt e g e r
Unit: millimetres
CA RT ES IA N_Y _CO M PONE NT
201
T he Y matrix denotes the Y-component of the
cartes ian coordinate of a PMD 3D measure-
m e n t . T h e or i g i n o f t h e c a m e r a' s c oo r d i n a t e
s ys t e m i s i n t h e m i d d l e o f t h e l e ns ' f r o nt g l a s s ,
i f t h e e x t r i ns i c p ar a m e t e r s ar e a l l s e t t o 0. D a -
t a t yp e : 1 6 b i t s i g n e d i nt e g e r
Unit: millimetres
CA RT ES IA N_Z _COM PONE NT 202
T h e Z m at r ix d e n o t e s t he Z - c o m p o ne n t of t h e
ca rtes i a n c oo rd i nat e of a PM D 3D m easur e-
m e n t . T h e or i g i n o f t h e c a m e r a' s c oo r d i n a t e
s ys t e m i s i n t h e m i d d l e o f t h e l e ns ' f r o nt g l a s s ,
i f t h e e x t r i ns i c p ar a m e t e r s ar e a l l s e t t o 0. D a -
t a t yp e : 1 6 b i t s i g n e d i nt e g e r
Unit: millimetres
Содержание O3D303
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