It primarily introduces constitute,priciple of operation and characteristics of automatical meter system,technical application and its effect.

Numeral instrument recognition (NIR) based on machine vision is a breach for achieving interconnection of all instruments and realizing management-control integration and improving the intelligent management level.

In order to revise the error caused by the flight parameter recording procedure of a given plane type,this paper discussed in details automatic interpretation technology of onboard instrument values,which utilized the instrument s image frame recorded in the onboard video and made some automatic interpretation based on the image thinning and Hough transform preprocessing.

A method of automatic interpretation for infrared multi-target image sequence is proposed.

The method of automatic reading for high-precision pointer meter by means of image-processing technology is put forward,in which the key technology is to measure the parallax and transform coordinates from the coordinates system of meter image into the coordinates system of meter reading tracking.

In automatic reading system of index-instrument,image of dial plate needed be read must match template in order to decide type and range of instrument needed be read.

Getting the image of dial by vidicon, controlling the standard signal by computer, and applying the automatic recognition of the reading of pointer based on digital image-processing, the auto-detecting of the precision of voltage indicator is realized.

To solve the shortcomings of color recognition of test paper in Vieille test,a system of automatic recognition of test-paper color in Vieille test is developed on the basis of color automatic recognition technology.

Study on auto-recognition method and design for digital apparatus;

Aiming at the diversity of apparatus kinds and the complexity of recognition in the digital apparatus data collection based on video,an auto-recognition arithme- tic is studied.