Sony RDR-GX7 Technical Notes page 26

The Theory of Motion Adaptive
Block Noise Compensation
26
Block diagram
Video input
Block noise
detection
MC residual
Detecting the degree
movement vector
of encoding difficulty
Operation theory
Block noise
Block border
Amplitude
The Theory of Motion Adaptive
Field Noise Reduction
Block diagram
Video output
Video
input
Compensator
output
Operation theory
Field one
Compensation
Block border
Before compensation
After compensation
Representational Diagram of Motion
Detection by Block Matching
Inverse Hadamard transform
Limiter
Hadamard transform
Motion compensation
Noise detection
Field two
Noise
Movement Subtraction, Hadamard
compensation limiter processing
Blocks are analyzed and movement
Region of blocks
vectors are calculated
with movement
is zero vector blocks only are moved, and subtraction processing is performed.
Compensation pixels
4 pixels
Search area
16 pixels
(-8 , -4)
(0 , 0)
(+7, +3)
-1 to -8 +1 to +7
Video
output
Field memory
Output
Subtraction
Vertical search area
Horizontal search area
-1 to -4
+1 to +3