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Container number correction method

A container and container number technology, which is applied in the direction of instruments, character and pattern recognition, computer parts, etc., can solve the problems of the impact of recognition results, etc.

Inactive Publication Date: 2015-05-27
张起坤 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inventor found that due to problems such as shooting environment, angle, and box tilt, the box number map will be very complicated.
In the single character segmentation map obtained in these complex situations, the amount of inclination in it will inevitably affect the recognition result, and in severe cases may lead to a wrong result of recognition

Method used

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Embodiment approach

[0034] It should be supplemented that, as a preferred embodiment of the present invention, the correction method after step S1 and before step S2 further includes, step S11: normalizing a single character segmentation image to be corrected into a binary image. Among them, the normalization process can eliminate redundant colors in the segmentation map of a single character to be corrected, thereby further improving the accuracy of recognition and correction.

[0035] Step S3: Calculate the minimum circumscribed rectangle corresponding to the single character image to be corrected in each rotation process, and calculate the height-to-width ratio of each minimum circumscribed rectangle respectively.

[0036] After completing step S2, calculate the minimum circumscribed rectangle corresponding to the single character image to be corrected during each rotation. Specifically, the minimum circumscribed rectangle corresponding to the single character image to be corrected is the rectangle...

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Abstract

The invention discloses a container number correction method and relates to the technical field of optical character recognition and correction. Acquired container numbers can be corrected with the correction method, so that character deformation caused by the shooting angle factor, the container inclination factor and the like is eliminated, and the container number recognition rate is increased finally. The container number correction method specifically comprises multiple steps as follows: performing image preprocessing and character segmentation on the container numbers, repeatedly and continuously rotating to-be-corrected single-character segmentation graphs, calculating corresponding minimum enclosing rectangles in each rotating process, comparing height-to-width ratios and the like.

Description

Technical field [0001] The invention relates to the technical field of optical character recognition and correction, in particular to a method for correcting container number. Background technique [0002] On the one hand, container ships are becoming larger and larger, and on the other hand, container liners have stricter schedule requirements. In order to ensure the punctuality of ship schedules, container terminals need to complete the loading and unloading of container cargo as soon as possible. For this reason, how to use modern means such as electronic computers and data exchange systems to improve the information management level of container terminals has become an important research topic in the field of container technology. Except for Hong Kong HIT, Shanghai SCT and Yantian Container Terminals, which are in the forefront of development in my country, most of the container terminals have a low level of computer management. There are often operations instructions issued ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/38
CPCG06V10/243G06V10/267
Inventor 张起坤张小庆余恒
Owner 张起坤