Based on the inherent characteristics of space vehicle end surface

combined with the existing space image measurement system hardware platform

propose a method for end surface image feature extraction and recognition

to obtain the key objectives of surface feature information of the field and the follow-up image physical parameters optimization solution plays a guide role.On the basis of space vehicle elliptic edge feature

the ellipse edge feature is detected using the Canny operator

then the edge feature is split into several arcs.Using the method of arc fitting

arc merger and ellipse extraction

end sur face feature is extracted accurately.Simulation results show that the image feature recognition method has good real-time performance and high precision

and can significantly enhance image measurement ability of space vehicle.