Application of method of locating a region of interest in the identification of the monitoring instrument

The present invention relates to a method for positioning application region of interest identified in the monitoring instrument, particularly comprising the step of: A, pasting two-dimensional code; B, camera initialization; C, the captured image; D, motion detection; E, image format conversion; F, labeled marker said detecting, locating the region of interest ROI; G, the divided region of interest ROI; H, identifying reading; the I, the reading display; J, an audible alarm. Marker marking of the present invention, only black and white colors, the image binarization Obviously, quickly and accurately locate the ROI region of interest, image pre-processing operation is simplified, it is possible to adapt to the situation and the light changes very robust . The method of the present invention is the use of motion detection instrumentation jitter, only the characters of the occurrence of the chattering when positioning the instrument, instrument monitoring solve jitter meter identification, meter region of interest ROI and not obvious great difficulty positioning problem.