Focusing method, device and equipment and readable storage medium

A focusing method and focusing evaluation technology, which are applied to TVs, color TV components, and components of TV systems, etc., and can solve the problem that the focusing evaluation value cannot be consistent with the image clarity.

Pending Publication Date: 2022-04-29
山东云海国创云计算装备产业创新中心有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the focus evaluation value obtained in normal scenes can be completely consistent with the clarity of the image. However, the focus evaluation value obtained in the case of strong light and...

Method used

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  • Focusing method, device and equipment and readable storage medium
  • Focusing method, device and equipment and readable storage medium
  • Focusing method, device and equipment and readable storage medium

Examples

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Embodiment Construction

[0048] AF (Auto Focus) is a method that uses the principle of object light reflection, the reflected light is received by the sensor on the camera, and the electric focus device is driven by computer processing to focus.

[0049] The focusing process is to move the lens so that the imaging element moves to the best focus position. The function of moving the lens is easy to solve, directly use the stepper / motor to move the lens. However, the machine doesn't know where the plane of best focus is. People can know whether the imaging element is at the best focal plane by observing the clarity of the imaging picture. However, the machine does not know whether the picture is clear, so it is necessary to let the machine know the clarity of the imaging picture at the current focus position. The sharpness of the picture is an intuitive feeling for people. It is necessary to convert the sharpness of the picture into a specific value, that is, the sharpness index of the picture is requ...

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Abstract

The invention discloses a focusing method, device and equipment and a readable storage medium, and the method comprises the steps: segmenting an image into N image blocks, and determining a first image block; the first image block is an image block except a second image block, and the second image block is an image block of which the brightness sum is greater than a first threshold value in a connected domain of the maximum brightness pixel point; segmenting the edge image into N edge image blocks, and determining a first edge image block; the first edge image block is an edge image block of which the edge value variation of the corresponding edge image block in the previous edge image is not greater than a second threshold value; calculating a focusing evaluation value of the edge image according to the edge value and the number of the second edge image blocks, and focusing according to the focusing evaluation value; the second edge image block is an edge image block which is the first image block and the first edge image block at the same time. According to the technical scheme disclosed by the invention, the focusing evaluation value is calculated by utilizing the edge image block which does not have strong light and does not have sudden entering and exiting of an object, so that the accuracy of automatic focusing is improved.

Description

technical field [0001] The present application relates to the technical field of autofocus, and more specifically, to a focusing method, device, equipment and a readable storage medium. Background technique [0002] Autofocus is a method of using the principle of object light reflection to receive the reflected light by the sensor on the camera, and drive the electric focusing device to focus through computer processing. The focusing process is to use the stepper / motor to move the lens, so that the imaging element moves to the best focus position. [0003] Because the larger the sharpness index value of the picture is, the higher the sharpness of the picture is, and the sharpness index value of the imaged picture at the best focus position is the largest. Therefore, the machine can compare the imaging sharpness index values ​​of different focus positions to determine Know which pictures are clear and which are not. At present, the focus evaluation value of the image is oft...

Claims

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Application Information

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IPC IPC(8): H04N5/232H04N19/176
CPCH04N19/176H04N23/67H04N23/80
Inventor 袁秀阳张文明
Owner 山东云海国创云计算装备产业创新中心有限公司
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