142 
  
  
  
  
Quantization Step Q 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Image Cosine Data Quantization | 
Segmentation | Transformation Samples (Scaling & s Formatting 
(16x16 pixels) Ordering Truncation) | 4 | 
i | i 
| | — 
i 39 | 
| Word i 
{Synchronization 
Data 
meer EE 
Image Inverse (16x16) Amplitude Doformatting 
Cosin data sample ff 5 ; T ES 
Reconstruction m 5 e : 2 ip Conversion 
Transformation blocks 
Î 
i Word | 
i : : Ld 
Synchronization 
  
  
  
  
Figure 1 - Chaturvedi Algorithm block diagram 
RATE DISTORTION THEORY 
CHATURVEDI ALGORITHM 
BITS/PIXEL 6 4 
  
d $15 
HN 
1 ni 
3; > Pre 
2 o 
1.4 
  
T 7 7 T 7 
à 34 6 6. 7 8 9 
MEAN SQUARE DISTORTION 
Fiaure 2 - Theoretical Performance