Video stream capturing and sizing device for multi-point online calibration

Abstract

The utility model provides a multi-point on-line calibrated video stream capturing and sizing device, which comprises a video acquisition camera and an image processing board card, and is characterized in that the video acquisition camera in a video acquisition module captures a video stream of a casting blank and transmits the video stream to a processing module. And the video stream is processed through a multi-point calibration algorithm, and the size information of the casting blank is extracted. The calibration module is provided with a plurality of calibration points, and each calibration point is provided with a calibration mark. The calibration point can be adjusted on line according to the shape and size of the casting blank, and the casting blank size information extracted by the processing module is displayed through the display module. Due to the adoption of an on-line calibration mode, calibration can be carried out in the operation process of equipment, the tedious process that the equipment needs to be stopped for calibration in a traditional mode is avoided, the calibration efficiency is improved, the device can carry out high-precision on-line calibration on video streams through the arrangement of the multi-point calibration identification pieces, and the calibration efficiency is improved. The size of the captured image is more accurate, and the calibration precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of length measurement, in particular to a multi-point online calibrated video stream capture and length measurement device. Background Art

[0002] In industrial production, the measurement of the size of objects such as ingots is a very important link; the continuous casting machine roller length measuring device proposed in the Chinese utility model patent application number: CN201510267263.3 includes: a lifting unit and a laser length distance meter, the laser length distance meter is horizontally arranged, and the lifting unit drives the laser length distance meter to rise or fall. The present invention sets the laser length distance meter between the conveying rollers, and then uses the lifting unit to realize the rise and fall of the laser length distance meter, realizes the switching of the measurement and the ingot through the two working states, and realizes the continuous conveying of the ingot and the continuous measurement of the laser length distance meter.

[0003] However, the existing sizing device has some shortcomings during use and still needs to be improved. First of all, the existing sizing device adopts a fixed-point online calibration of the length of the billet. Although the fixed-point measurement method is simple, the accuracy is not high, and it has poor adaptability to billets of different shapes and sizes. Therefore, we make improvements on this and propose a multi-point online calibration video stream capture sizing device. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions: a multi-point online calibration video stream capture and sizing device, including a video acquisition camera and an image processing board, the video acquisition camera is data-connected to the image processing board, a calibration frame is arranged below the video acquisition camera, a calibration point fixing seat is arranged below the calibration frame, and a multi-point calibration identification sheet is arranged inside the calibration frame.

[0005] As a preferred technical solution of the utility model, the multi-point calibration identification sheet is provided with a casting blank positioning sensor.

[0006] As a preferred technical solution of the utility model, the video acquisition camera is connected to the multi-point calibration point position sensor data via a video stream transmission line.

[0007] As a preferred technical solution of the utility model, a calibration status indicator light is provided on the upper side of the video acquisition camera.

[0008] As a preferred technical solution of the utility model, the video acquisition camera is data-connected with a video stream quality monitor.

[0009] As a preferred technical solution of the utility model, the video acquisition camera and the image processing board form a video acquisition module.

[0010] As a preferred technical solution of the utility model, the video acquisition module is data-connected with the data processing module, and the data processing module is data-connected with the calibration module.

[0011] As a preferred technical solution of the present utility model, the calibration module is data-connected with the display module.

[0012] Compared with the prior art, the utility model has the following beneficial effects: In the scheme of the utility model: the video stream of the ingot is captured by the video acquisition camera in the video acquisition module, and the video stream is transmitted to the processing module. The video stream is received, and the video stream is processed by a multi-point calibration algorithm to extract the size information of the ingot. The calibration module sets a plurality of calibration points, and each calibration point is provided with a calibration mark. The calibration point can be adjusted online according to the shape and size of the ingot to achieve more accurate calibration. The ingot size information extracted by the processing module is displayed by the display module. By setting a multi-point calibration mark sheet 5, the device can perform high-precision online calibration on the video stream, so that the captured image size is more accurate and the calibration accuracy is improved. The design of the calibration frame 3 and the calibration point fixing seat 4 makes the calibration process more convenient, reduces manual intervention, and improves the automation degree of the system. Due to the adoption of the online calibration method, the utility model can be calibrated during the operation of the equipment, avoiding the cumbersome process of stopping the equipment for calibration in the traditional way, thereby improving the calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure provided by the utility model;

[0014] Figure 2 A schematic diagram of the main structure provided by the utility model;

[0015] Figure 3 This is a schematic diagram of the local structure provided by the utility model.

[0016] Indicated in the figure:

[0017] 1. Video acquisition camera; 2. Image processing board; 3. Calibration frame; 4. Calibration point fixing seat; 5. Multi-point calibration identification plate; 6. Ingot positioning sensor; 7. Video stream transmission line; 8. Multi-point calibration point position sensor; 9. Calibration status indicator light; 10. Video stream quality monitor; 11 Video acquisition module; 12 Data processing module; 13 Calibration module; 14 Display module. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0019] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model for which protection is sought, but merely represents some embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should be noted that the embodiments of the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] Example 1: Please refer to Figure 1-Figure 3 A multi-point online calibration video stream capture and sizing device comprises a video acquisition camera 1 and an image processing board 2. The video acquisition camera 1 is data-connected to the image processing board 2. A calibration frame 3 is arranged below the video acquisition camera 1. A calibration point fixing seat 4 is arranged below the calibration frame 3. A multi-point calibration identification sheet 5 is arranged inside the calibration frame 3.

[0021] The multi-point calibration identification sheet 5 is provided with a casting blank positioning sensor 6. The video acquisition camera 1 is connected to the multi-point calibration point position sensor 8 via a video stream transmission line 7.

[0022] A calibration status indicator light 9 is provided on the upper side of the video acquisition camera 1. The video acquisition camera 1 is data-connected to the video stream quality monitor 10. The video acquisition camera 1 and the image processing board 2 form a video acquisition module 11. The video acquisition module 11 is data-connected to the data processing module 12, and the data processing module 12 is data-connected to the calibration module 13. The calibration module 13 is data-connected to the display module 14;

[0023] Video acquisition module 11: used to capture the video stream of the ingot and transmit the video stream to the processing module.

[0024] Processing module: Receive the video stream, process the video stream through a multi-point calibration algorithm, and extract the size information of the ingot.

[0025] Calibration module 13: includes multiple calibration points, each of which is provided with a calibration mark. The calibration points can be adjusted online according to the shape and size of the ingot to achieve more accurate calibration.

[0026] Display module 14: used to display the ingot size information extracted by the processing module.

[0027] By setting the multi-point calibration identification piece 5, the device can perform high-precision online calibration on the video stream, so that the captured image size is more accurate and the calibration accuracy is improved.

[0028] The design of the calibration frame 3 and the calibration point fixing seat 4 makes the calibration process more convenient, reduces manual intervention, and improves the automation level of the system.

[0029] Due to the adoption of online calibration, the device can be calibrated during equipment operation, avoiding the tedious process of stopping the device for calibration under the traditional method, thereby improving calibration efficiency.

[0030] The video acquisition camera 1 is connected to the multi-point calibration point position sensor 8 via the video stream transmission line 7, so that real-time feedback and adjustment can be achieved, thereby improving the stability and reliability of the system.

[0031] The setting of the calibration status indicator light 9 makes the calibration status clear at a glance, which is convenient for operators to monitor and manage.

[0032] The video acquisition camera 1 is data-connected to the video stream quality monitor 10, and can monitor the video stream quality in real time, ensuring that the captured image is clear and stable, thereby improving the video stream quality of the system.

[0033] The video acquisition module 11 is data-connected with the data processing module 12, which can realize fast and accurate data processing and improve the data processing capability of the system.

[0034] The calibration module 13 is data-connected to the display module 14, and the calibration results can be displayed on the screen in real time, which is convenient for operators to view and analyze.

[0035] This multi-point online calibration video stream capture and sizing device has the beneficial effects of high precision, intelligence, high efficiency, good stability, high degree of visualization, excellent video stream quality, strong data processing capability and good display effect of calibration results, and is of great significance to improving the level of industrial production automation.

[0036] Working process and principle of video stream capture and sizing device for multi-point online calibration

[0037] Working process: Initialization stage: After the device is started, the initialization settings are first performed, including parameter settings of the video acquisition camera 1, configuration of the image processing board 2, installation of the calibration frame 3 and the calibration point fixing seat 4, etc.

[0038] Video acquisition: The video acquisition camera 1 starts working, captures the target object on the production line, and transmits the real-time video data to the image processing board 2 through the video stream transmission line 7.

[0039] Online calibration: When the target object enters the calibration frame 3, the multi-point calibration identification sheet 5 is captured by the camera. The image processing board 2 performs image processing and recognition on the captured calibration identification sheet to determine the exact position of the calibration point.

[0040] Data processing: The image processing board 2 sends the calibration point position data to the data processing module 12 for further data processing and analysis.

[0041] Fixed-size capture: Based on the processed calibration data, the device performs fixed-size capture of the target object, that is, determines the exact size and position of the target object in the video stream.

[0042] Display and monitoring: The calibration results and the fixed-length capture results are displayed in real time through the display module 14 for the operator to view. At the same time, the video stream quality monitor 10 monitors the video stream quality in real time to ensure that the captured image is clear and stable.

[0043] Feedback and adjustment: The multi-point calibration point position sensor 8 provides real-time feedback of the target object’s position information. If a deviation occurs, the device will automatically make adjustments to ensure the accuracy of calibration and capture.

[0044] Working principle: The device is mainly based on computer vision and image processing. The video acquisition camera 1 captures the target objects and calibration identification pieces on the production line, and transmits the real-time video data to the image processing board 2. The image processing board 2 preprocesses, extracts features and identifies the video stream to determine the exact position of the calibration point. Through the data processing module 12, the device captures the target object at a fixed size and displays the results in real time. At the same time, the device also has automatic feedback and adjustment functions to ensure the accuracy of calibration and capture. During the entire working process, the device realizes online calibration and fixed-size capture of the target object through the collaborative work of multiple modules, thereby improving the level of production automation and product quality.

[0045] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A video stream capture and sizing device for multi-point online calibration, comprising a video acquisition camera (1) and an image processing board (2), characterized in that: The video acquisition camera (1) is data-connected to the image processing board (2); a calibration frame (3) is provided below the video acquisition camera (1); a calibration point fixing seat (4) is provided below the calibration frame (3); and a multi-point calibration identification sheet (5) is provided inside the calibration frame (3).

2. The video stream capture and sizing device for multi-point online calibration according to claim 1, characterized in that: The multi-point calibration identification sheet (5) is provided with a casting blank positioning sensor (6).

3. The video stream capture and sizing device for multi-point online calibration according to claim 2, characterized in that: The video acquisition camera (1) is data-connected to a multi-point calibration point position sensor (8) via a video stream transmission line (7).

4. The video stream capture and sizing device for multi-point online calibration according to claim 3 is characterized in that: A calibration status indicator light (9) is provided on the upper side of the video acquisition camera (1).

5. The video stream capture and sizing device for multi-point online calibration according to claim 4, characterized in that: The video acquisition camera (1) is data-connected to the video stream quality monitor (10).

6. The video stream capture and sizing device for multi-point online calibration according to claim 5, characterized in that: The video acquisition camera (1) and the image processing board (2) form a video acquisition module (11).

7. The device for capturing and sizing video streams with multi-point online calibration according to claim 6, characterized in that: The video acquisition module (11) is data-connected to the data processing module (12), and the data processing module (12) is data-connected to the calibration module (13).

8. The device for capturing and sizing video streams with multi-point online calibration according to claim 7, characterized in that: The calibration module (13) is data-connected to the display module (14).

Images