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Container special-purpose lead seal number image identification method

An image recognition and container technology, applied in the field of image recognition, can solve the problems of low efficiency and low recognition accuracy, and achieve the effects of high efficiency, improved image color brightness, and improved display effect.

Pending Publication Date: 2020-08-21
上海观祇信息科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The issuance of lead seals has always been manually issued, and the number on the seal is identified and uploaded to the terminal system. The recognition accuracy is not high and the efficiency is low. Therefore, a method for image recognition of container-specific lead seals is proposed.

Method used

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  • Container special-purpose lead seal number image identification method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, with reference to figure 1 A method for image recognition of special lead seals for containers, comprising the following steps:

[0023] Convert the acquired original image from RGB color space to LCH color space;

[0024] Extract the brightness information of each pixel of the original image in the LCH color space;

[0025] Extract the chroma information of each pixel of the original image in the LCH color space for chroma compensation, for example, extract the color saturation in the chroma information for color saturation compensation, and the color saturation compensation of the original image is mainly determined by the ambient light intensity It is determined that the ambient light intensity can be obtained in real time by devices such as light sensors or light probes; when the ambient light is strong, the original image displayed after chromaticity compensation will be enhanced and become more vivid, and the hue H will remain unchanged;

[0026] D...

Embodiment 2

[0034] Embodiment 2, with reference to figure 1 A method for image recognition of special lead seals for containers, comprising the following steps:

[0035] Convert the acquired original image from RGB color space to LCH color space;

[0036] Extract the brightness information of each pixel of the original image in the LCH color space, and perform mapping processing on the brightness information to improve the overall contrast of the image. The specific mapping processing method is: perform global nonlinear mapping on the brightness information to make the image low gray The contrast of the interval is significantly improved, and the details of the dark tone are smoothly expanded;

[0037] Extract the chroma information of each pixel of the original image in the LCH color space for chroma compensation, for example, extract the color saturation in the chroma information for color saturation compensation, and the color saturation compensation of the original image is mainly de...

Embodiment 3

[0046] Embodiment 3, with reference to figure 1 , compared with Embodiment 2, the difference is that: the specific mapping processing method is: divide the brightness information of the image into a low-frequency part base layer and a high-frequency part detail layer, and then perform global mapping processing on the base layer, using the method of preserving image brightness perception difference mapping algorithm.

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Abstract

The invention discloses a special lead seal number image identification method for a container. The method comprises the following steps: obtaining an original image and a degraded image after the original image is added with an ambient light ground color; obtaining a chromaticity difference Cdiff of the original image and the degraded image; and performing chrominance compensation on the originalimage by using the chrominance difference to obtain a compensated image. According to the invention, after the seal number is identified through an algorithm, the work of automatically uploading theseal number to the wharf system is completed, and compared with manual operation, the identification accuracy and efficiency are high.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to an image recognition method for container-specific lead seals. Background technique [0002] The lead seal is a device similar to a lock that is applied by a specific person after the goods are loaded into the container and the door is closed correctly. Once the lead seal is properly locked, it cannot be opened unless it is violently damaged, and the damaged lead seal cannot be reused. Each lead seal has a unique number identification. As long as the appearance of the container is complete, the container door is closed correctly, and the lead seal is locked normally, it can be proved that the container has not been opened privately during transportation, and the conditions inside the container shall be supervised and responsible by the person packing the container. The issuance of lead seals has always been manually issued, and the number on the seal is identified and...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06K9/36
CPCG06T2207/10024G06V10/20G06T5/92
Inventor 吴峰
Owner 上海观祇信息科技有限公司
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