1. A segment based image registration method for registering an examined image with a standard image, the method comprising: dividing the standard image into at least one standard image segment, and dividing the examined image into at least one examined image segment, wherein the standard image segment has a plurality of standard feature points, and the examined image segment has a plurality of examined feature points; selecting a standard reference point in the standard image segment, and selecting an examined reference point in the examined image segment, wherein the standard feature points and the standard reference point form a plurality of standard vectors, and the examined feature points and the examined reference point form a plurality of examined vectors; comparing the examined vectors to the standard vectors to obtain at least one transformation matrix; deriving a transformation parameter from the transformation matrix according to a Fibonacci search; and adjusting the examined image segment with the transformation parameter.