all in one license plate recognition machine < / a > selection precautions

I. stability of all-in-one license plate recognition machine

The definition of stability is: the accuracy to be achieved within a given speed range, and excessive error caused by the influence of external environment is not allowed. For example, a license plate system has an accuracy of more than 90% during the day and 80% in the evening. This unstable system is more difficult to integrate than a license plate recognition system with an average accuracy of 70% all day. Therefore, the technical strength of the all-in-one license plate recognition machine is definitely the focus to be considered when selecting the all-in-one machine. Because license plate recognition is a technical application of OCR recognition, it is necessary to focus on the soft reality of OCR recognition

II. Field test of all-in-one license plate recognition machine

The recognition rate of all-in-one camera for license plate recognition almost everyone claims to have a high recognition rate. However, in order to avoid shifting the responsibility of poor operation to each other due to the difference in product cognition between the two sides, users may wish to require field test when purchasing the license plate recognition system, and the test time shall not be less than two weeks as far as possible, and the collection results of multiple samples for a long time, More fair and accurate test results

In addition to the influence of software technology, the ability of camera and on-site construction also plays a vital role in whether the integrated license plate recognition machine can achieve good recognition effect. The user can put forward the construction planning scheme, and first evaluate the location where the camera should be erected, the angle of camera erection, whether the auxiliary light source needs to be erected, etc. this step is also essential