what is the difference between a319 and a320
Airbus A320 family The A319 is the next derivative of the baseline A320. The design is a "shrink" with its origins in the 130- to 140-seat SA1, part of the Single-Aisle studies.[51] The SA1 was shelved as the consortium concentrated on its bigger siblings. After healthy sales of the A320/A321, Airbus re-focused on what was then known as the A320M-7, meaning A320 minus seven fuselage frames.[53] It would provide direct competition for the 737–300/-700.[51] The shrink was achieved through the removal of four fuselage frames fore and three aft of the wing, cutting the overall length by 3.73 metres (12 ft 3 in).[47][54][55] Consequently, the number of overwing exits was reduced from four to two. The bulk-cargo door was replaced by an aft container door, which can take in reduced height LD3-45 containers.[54] Minor software changes were made to accommodate the different handling characteristics; otherwise the aircraft is largely unchanged. Power is provided by the CFM56-5A or V2500-A5, derated to 98 kN (22,000 lbf), with option for 105 kN (24,000 lbf) thrust.[56]
Active appearance model It is related to the active shape model (ASM). One disadvantage of ASM is that it only uses shape constraints (together with some information about the image structure near the landmarks), and does not take advantage of all the available information â€“ the texture across the target object. This can be modelled using an AAM.