Method and apparatus for detecting spectral characteristics of multi-band moving objects

A method for detecting spectral characteristics of multi-band moving objects, the method comprising:

• 1) dividing a full field of view into several subfields of view, and scanning and extracting suspected objects in each subfield one by one;
• 2) correlating interrelated suspected objects in adjacent subfields via coordinates to determine objects of interest that exist in the full field of view, a current coordinate position of the objects of interest being denoted as T′n(xkn,ykn), n=1, 2, 3 . . . N, N representing a number of the objects of interest;
• 3) calculating the speeds of objects of interest
• {
• v
• nx
• =
• (
• xk
• n
• -
• x
• ⁢
• ⁢
• 0
• n
• )
• ⁢
• f
• k
• v
• ny
• =
• (
• yk
• n
• -
• y
• ⁢
• ⁢
• 0
• n
• )
• ⁢
• f
• k
• ,
• representing a frame number of objects moving from starting point (x0n, y0n) to coordinate (xkn, ykn), and f representing a frame frequency of long-wave infrared images;
• 4) calculating average speed of all objects of interest and classifying the objects of interest according to their average speed:
• if the objects of interest are static or moving slowly, a conventional mode is selected;
• if the objects of interest are moving fast, a fast response mode is selected;
• if the objects of interest are time-varying, a concentration mode is selected;
• a) the conventional mode comprising:
• tracking and calculating spectrum of each object of interest from left to right, from top to bottom one by one;
• b) the fast response mode comprising:
• tracking and calculating spectrum of each object of interest sequenced according to priority order one by one;
• c) the concentration mode comprising:
• continuously tracking and measuring spectrum of certain objects of interest;
• d) the priority order in descending order being:
• i. objects in the vicinity of a boundary of a range of a center of an optical axis and moving out of the boundary;
• ii. objects in the boundary of a range of a center of an optical axis and moving towards the boundary;
• iii. objects moving to inner side of a range of a center of an optical axis;
• and
• iv. objects keeping static in the view field;
• and
• v. when objects with the same priority being sequenced, a following rule being followed:
• fast moving objects being measured first and objects out of tracking range not measured;
• 5) compensating and rectifying the objective spectrum obtained from calculation;
• and
• 6) matching the compensated and rectified objective spectrum with a spectrum fingerprint database whereby realizing recognition.