A trigger timing synchronization method, device, equipment and storage medium for a line scan camera

Abstract

The invention discloses a line scan camera triggering time-sequence synchronization method, which is used for a line scan camera scanning system. The line scan camera scanning system includes a photographing part used for photographing a to-be-detected object, a carrier used for placing the to-be-detected object and a Y-axis motor. The carrier moves along a Y-axis under driving of the Y-axis motor. The photographing part includes a line scan camera. The method includes the steps of: providing a frame triggering signal to the line scan camera in advance; and outputting a row triggering signal to drive photographing of the line scan camera when a preset start position is reached, wherein the start position is set after starting of the frame triggering signal. The invention also discloses a line scan camera triggering time-sequence synchronization device, line scan camera triggering time-sequence synchronization equipment and a storage medium, and relates to the technical field of cameras. The line scan camera triggering time-sequence synchronization method, the line scan camera triggering time-sequence synchronization device, the line scan camera triggering time-sequence synchronization equipment and the storage medium solve the problem of stretching or distortion of an image shot by a line scan camera in the prior art, and improve image shooting effect.

Description

technical field [0001] The present invention relates to the technical field of cameras, in particular to a trigger timing synchronization method, device, device and storage medium of a line scan camera. Background technique [0002] The line scan camera collects at high speed. After each line is collected, it just moves to the next unit precision length, and continues to collect the next line. In this way, a two-dimensional picture will be assembled after a period of time, which is similar to that collected by an area array camera. picture of. Such as figure 1 As shown, the shooting mechanism of the line scan camera is generally as follows: when the frame trigger signal a is at a high level, each line pulse trigger signal b shoots once. [0003] In the prior art, the object to be detected usually moves in the Y-axis direction following the vehicle, such as figure 2 As shown, the carrier is driven by the Y-axis drive signal c provided by the Y-axis linear motor driver, an...

AI Technical Summary

Problems solved by technology

In this way, when scanning, if the frame trigger signal a of the line scan camera is not synchronized with the signal (Y-axis drive signal c) of the object to be photographed, the image captured by the camera will be stretched or distorted, for example, as figure 2 Among them, when the frame trigger signal a (high level at trigger position 2) is triggered earlier than the Y-axis drive signal c (the detected object starts to move at t=t1), since the detected object does not move, the The actual detected object is shot multiple times at the same position, and image stretching occurs; when the frame trigger signal a (high level at trigger position 3) is triggered later than the Y-axis drive signal c (the detected object is at t = start to move at t1), because the detected object has moved a certain distance, the actual detected object is partially missed, and image distortion occurs

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