Image Compression and Reconstruction Using Feature Extraction

C o n s i d e r a b l e r e s e a r c h has been d e v o t e d t o t h e deve lopment o f methods f o r r e d u c i n g t h e t r a n s m i s s i o n b a n d w i d t h o f v i d e o s i g n a l s such t h a t t he r e c o n s t r u c t e d image i s o f a h i g h q u a l i t y . T y p i c a l l y , t h e s e methods p e r f o r m a s t a t i s t i c a l e n c o d i n g o f t h e i n t e n s i t y l e v e l s o f a q u a n t i z e d p i c t u r e , o r t hey p e r f o r m some t r a n s f o r m a t i o n and subsequent d a t a r e d u c t i o n i n o r d e r t o a c h i e v e b a n d w i d t h r e d u c t i o n [ 3 ] . Such methods r a r e l y a c h i e v e d a t a comp r e s s i o n r a t i o s i n excess o f t e n t o o n e w i t h o u t n o t i c e a b l e l o s s o f q u a l i t y i n t h e r e c o n s t r u c t e d p i c t u r e .