Seal checking method and seal checking device

Abstract

The invention relates to a seal checking method and a seal checking device. The checking device comprises n groups of light sources, a camera and a control processing circuit which are distributed annularly. The checking method comprises the following steps: the n groups of light sources are started in sequence based on time sequence so as to realize flash exposure of a die of the seal; the camera synchronously shoots the die of the seal during exposure, so as to obtain n electronic images Fi, brightness values of the n electronic images are compared, and then the brightest electronic image Flight and the darkest electronic image Fdark are selected from the n electronic images; the brightest electronic image Flight and the darkest electronic image Fdark are aligned to realize pixel stacking and composition of the images; the composite electronic image Ftarget is subjected to check and verification with a stored target image and stored target parameters, and then a check pass signal or a check rejection signal is sent. According to the seal checking method and the seal checking device, the daily manual operation workload of seal checking is greatly reduced, the seal checking efficiency is increased greatly, the checking failure probability is reduced, the operation is simplified, the paperless office work is significantly promoted, and the daily consumption of paper is lowered.

Description

technical field

[0001] The invention relates to electronic monitoring equipment, and more particularly, the invention relates to an electronic equipment for identifying and monitoring management seals. Background technique

[0002] The use of seals generally involves major property interests and even personal safety of relevant units, enterprises, and individuals. For border inspections, ports and other units that involve national public security and national interests, the verification and identification technology of verification stamps is particularly important. In order to check and control the large number of people and goods entering and exiting the border inspection and ports, the relevant inspection personnel must frequently use the inspection stamps to sign and release the personnel and goods entering and leaving. The complete and correct information on the inspection stamp provides effective evidence for the border inspection and port units to implement correct ins...

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