A cylindrical image correction method and system

An image correction and image technology, applied in the field of image processing, can solve the problems of low work efficiency, complicated operation, and tedious manual operation process.

Active Publication Date: 2019-06-28
DANDE IMAGE MASTER CO LTD ZHUHAI
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  • Abstract
  • Description
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Problems solved by technology

[0004] The existing technology is to manually obtain the plane image of the cylindrical label, and use the PS tool to rotate and cut the pattern, which requires meticulous and cumbersome manual operation, complicated operation and low work efficiency

Method used

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  • A cylindrical image correction method and system
  • A cylindrical image correction method and system
  • A cylindrical image correction method and system

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Embodiment Construction

[0031] The cylindrical image correction method of the present invention is applied to various shooting devices, such as cameras, monitoring devices, etc., and can also be applied to mobile devices with a camera function, such as smart phones, tablet computers or driving recorders and other electronic devices . The cylindrical image correction system of the present invention is a system that runs on computer equipment and is used to implement the above cylindrical image correction method.

[0032] An embodiment of a cylindrical image correction method:

[0033] see figure 1 When the cylindrical image correction method of this embodiment performs positioning correction on the cylindrical image, first, step S1 is performed to obtain the original image transmitted by the terminal, wherein, in the embodiment of the present invention, the terminal can be a mobile phone or other A device capable of taking pictures. After the terminal captures the image, the terminal uploads the or...

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Abstract

The invention discloses a cylindrical image correction method and system. The method comprises the steps of obtaining an original image transmitted by a terminal, preprocessing the original image; obtaining an input image, detecting edge points of the label pattern in the input image; determining four vertexes of the label image according to the edge points, obtaining correction parameters are obtained with the first curve and the second curve of the label image as the reference, correcting the label image according to the correction parameters, establishing a three-dimensional perspective transformation relation between the corrected label image and the label image before correction, and obtaining a final correction image. The system comprises an image preprocessing module, a positioningmodule and a correction module, and is used for realizing the cylindrical image correction method. According to the correction method provided by the invention, the specified characteristics on the cylindrical pattern can be identified, accurate positioning and image correction are completed, the method is accurate and rapid, the method has a certain degree of restoration capability on a distortedimage, and an application scene is not limited to a plane any more.

Description

【Technical field】 [0001] The present invention relates to the technical field of image processing, in particular to a cylindrical image correction method and a system applied to the method. 【Background technique】 [0002] With the continuous progress and development of science and technology, the application cases of automatic photo recognition are becoming more and more extensive, such as: bank card and ID card positioning recognition, license plate positioning recognition, smart packaging and other applications. Quickly finding target regions from photos is one of the key issues for various applications. [0003] Among them, when it is necessary to accurately restore the original image and the shooting target is a plane, the correction problem can be solved by automatic affine transformation. However, when the shooting target is a non-plane such as a cylinder, the correction operation cannot be realized through the affine transformation of the plane, and the automatic cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/13
Inventor 不公告发明人
Owner DANDE IMAGE MASTER CO LTD ZHUHAI
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