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Motion compensation errors of motion vectors in uniform areas are usually close to the motion compensation error of the best motion vector in the neighbourhood.
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The reason we introduce these penalties is that the motion compensation error grows with the temporal distance and the amount of texture in the sequence.
This means that the motion vectors should produce small compensation errors in both depth and luminance (data term) and they should not differ much from the neighbouring motion vectors (regularization term).
However, the actual motion of platform is not ideal, so the range compressed signal in (3) is blurred with motion error Δ R=A ′ P−A P. Motion compensation is then processed to the blurred range compressed signal in order to remove the envelope and phase of motion errors, so that most of the errors would be compensated.
Moreover, according to the analytical expression of the residual spatial variant error, an accurate azimuth match filtering (AMF) function is modified by precise topography- and aperture-dependent motion compensation (PTA) [17], which compensates the residual azimuth-dependent motion errors remained by RCMC.
The RMS error after motion compensation was much lower and was ±3 µm.
The main advantages of such a GOP structure are to avoid the propagation of channel errors due to motion compensation and to offer random access of each distinct GOP.
Mosquito noise: appears as temporal shimmering seen mostly in smooth textured areas produced by ringing and prediction error due to motion compensation mismatchJerkiness is the impairment perceived by the user, while jitter and frame freezes are the technical artifacts which produce jerkiness.
Pixels near object boundaries tend to have high matching errors after the global motion compensation.
Motion compensation is finally used to obtain the final error-concealed frame Figure 5 Proposed spatio-temporal error concealment.
where denotes the pixel matching error after the global motion compensation.
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