SDA9410
Preliminary Data Sheet
Motion estimation
illustrates this feature, and shows that both types of predictions differ for the two
estimators (Sa and Ta of the first estimator, Sb and Tb for the second). Both estimators
further test one candidate that is found as the sum of their spatial prediction vector and
an update vector. The last candidate is the null vector.
The left branch contains only a special null block matcher. The best matching null vector
from either of the two branches is assigned to the current block.
The overall best vector is finally selected and used for scan rate conversion.
Different penalty mechanism exist to optimize the behaviour of the both branches of the
motion estimation block.
MEVPERTH
MEANRG
Pre
Pre
Processing I
Processing II
MEADDPEN
MEPENUP
MENULLPEN
MENPTH
Block
MEANMP
MEANBP
Block
MEHPERTH
MEPERINF
PERPEN
Matching I
Matching II
MENVRTH
MENULLUNFON
Best result
Figure 43
Block diagram of motion estimation
y-Y
y
Sa
Sb
Tb
Convergence direction A
current block
y+Y
y+2Y
Ta
Convergence direction B
block in current field
block in previous field
H-pos
x-2X
x-X
x
x+X
x+2X
Figure 44
Relative positions of the spatial predictors
The I²C Bus parameters below are used for optimization purposes of the motion
estimation block and should not be changed by the customer.
98
Micronas
MICRONAS [ MICRONAS ]
