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Image correction method, device and equipment and computer readable storage medium

An image correction and image technology, applied in the field of image processing, can solve problems such as inconvenient reading and image distortion, and achieve the effect of improving readability

Inactive Publication Date: 2017-12-26
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking pictures manually will affect the quality of the class, but if you set up an automatic camera to take pictures automatically, the collected images will be distorted and inconvenient to read

Method used

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  • Image correction method, device and equipment and computer readable storage medium
  • Image correction method, device and equipment and computer readable storage medium
  • Image correction method, device and equipment and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 It is a flow chart of the image correction method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where distortion correction is performed on an image captured by a camera containing blackboard content. The method can be executed by an image correction device, and specifically includes the following steps 110 to 130.

[0031] Step 110, in response to the trigger instruction, acquire the target image of the writing board through the camera; wherein, multiple markers are made on the writing board;

[0032] Wherein, the target image of the writing board is obtained through the camera, that is, the image taken by the camera facing the writing board is as follows Figure 2a As shown in , since the camera is facing the writing board, it can capture all the content displayed on the writing board. The image displayed on the writing board is as follows Figure 2b shown.

[0033] Step 120. Acquire first coordinates acc...

Embodiment 2

[0061] image 3 It is a flow chart of the image correction method provided by Embodiment 2 of the present invention. This embodiment is applicable to the case of performing distortion correction on an image captured by a camera containing blackboard content, and the method can be executed by an image correction device. The difference between this embodiment and Embodiment 1 is that Embodiment 1 uses coordinate mapping parameters or conversion functions to record the coordinate mapping relationship between the image displayed on the tablet and the image captured by the camera, and this embodiment records in the form of a list The coordinate mapping relationship. The image correction method provided in this embodiment includes:

[0062] Step 310, in response to the trigger instruction, acquire the target image of the writing board through the camera; wherein, multiple markers are made on the writing board;

[0063] Step 320. Obtain the first coordinates according to a preset a...

Embodiment 3

[0072] Figure 4 It is a schematic structural diagram of an image correction device provided in Embodiment 3 of the present invention, and the device includes:

[0073] The photographing module 410 is used to capture the target image of the writing board through the camera in response to the trigger instruction; wherein, multiple markers are made on the writing board;

[0074] An acquisition module 420, configured to acquire first coordinates according to a preset algorithm; wherein, the first coordinates are the coordinates of the marker in the target image;

[0075] The mapping module 430 is configured to obtain a coordinate mapping relationship between the writing board and the image captured by the camera according to the second coordinates and the first coordinates; coordinates on the writing board;

[0076] The correction module 440 is configured to correct the image captured by the camera into the blackboard image according to the coordinate mapping relationship after...

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PUM

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Abstract

The invention discloses an image correction method. The image correction method includes: responding to a trigger instruction and acquiring a target image of a writing board through a camera, wherein multiple markers are manufactured on the writing board; acquiring a first coordinate according to a preset calculation method, wherein the first coordinate is the coordinate of the markers in the target image; according to a second coordinate and the first coordinate, acquiring a coordinate mapping relation between the writing board and the image acquired by the camera, wherein the second coordinate is the coordinate of the markers on the writing board; after the image acquired by the camera contains the writing board displaying a blackboard writing image, correcting the image acquired by the camera into the blackboard writing image according to the coordinate mapping relation. Correspondingly, the invention further discloses an image correction device and equipment and a computer readable storage medium. By the arrangement, the problem that reading is affected by image distortion of an automatic-shooting blackboard writing image is solved, and readability of the shooting image is improved.

Description

technical field [0001] The present invention relates to image processing technology, in particular to an image correction method, device, equipment and computer-readable storage medium. Background technique [0002] Writing on the blackboard on the electronic whiteboard provided by the touch screen terminal has the advantages of no dust, effortless writing and easy erasure, so the electronic whiteboard is gradually popularized in the teaching classroom. But it cannot replace the traditional blackboard, because the electronic whiteboard cannot restore some details such as strokes, which may lead to poor viewing effect of the saved blackboard writing, especially for some courses that need to restore handwriting details, such as art, calligraphy, etc. Moreover, the interference of auxiliary educational equipment (such as a settable, etc.) cannot be ruled out. For example, when using a settable to measure on a blackboard, the touch screen will misjudge the settable as blackboard...

Claims

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Application Information

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IPC IPC(8): G06T3/00
CPCG06T3/04
Inventor 杨铭
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD