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Autofocus method, device, storage medium and computer equipment

An automatic focus and focus point technology, applied in neural learning methods, television, biological neural network models, etc., can solve problems such as the inability to quickly and accurately reach the best focus position, and achieve the goal of increasing speed, improving accuracy, and avoiding local peaks effect of influence

Active Publication Date: 2020-07-10
GUANGDONG SHUNDE IND DESIGN INST GUANGDONG SHUNDE INNOVATIVE DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide an automatic focusing method, device, storage medium and computer equipment that can quickly and accurately reach the best focus position for the problem that the best focus position cannot be quickly and accurately reached

Method used

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  • Autofocus method, device, storage medium and computer equipment
  • Autofocus method, device, storage medium and computer equipment
  • Autofocus method, device, storage medium and computer equipment

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Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not intended to This application is limited.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the specification of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application. It should be understood that the various steps in the flow chart of the present application are displayed in sequence according to the arrows, but these steps are not necessarily executed in sequence...

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Abstract

The present application relates to an autofocus method, device, storage medium and computer equipment. The method includes the following steps: Obtain the evaluation curve of the image to be processed through the image definition evaluation function, obtain a clear image picture, and obtain the simulated image through the loss function. Combine the trained BP neural network model, input the object position data in the evaluation curve into the BP neural network model, determine the focus point of the image to be processed, and use the loss function to perform fitting training on the BP neural network, which can minimize the error. Using BP The neural network model predicts the focus point, which improves the speed of auto focus; during the fine focus period, the simulated annealing algorithm is used to optimize the focus point to obtain the global optimal focus position, avoiding the influence of local peaks, and improving the focus speed. Accuracy, so as to realize the fast and accurate acquisition of the global best focus position, and complete auto focus.

Description

technical field [0001] The present application relates to the technical field of optical imaging, in particular to an autofocus method, device, storage medium and computer equipment. Background technique [0002] In recent years, with the rapid development of the electronic technology industry, the camera functions of various devices have become more and more powerful, such as increasing the image pixel, enhancing the Selfie function, increasing the aperture, enhancing the optical image stabilization function, accelerating the focus speed, auto focus, etc. [0003] As one of the key technologies of computer vision and various imaging systems, autofocus technology is widely used in imaging systems such as cameras, video cameras, microscopes, and endoscopes. Auto Focus (Auto Focus) is a method in which the sensor CCD of the camera receives the reflected light of the object, and then it is processed by a computer to drive the device to focus. Traditional autofocus methods incl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G06N3/08
CPCG06N3/08H04N23/67H04N23/80
Inventor 杨芒吴本涛郑方圆
Owner GUANGDONG SHUNDE IND DESIGN INST GUANGDONG SHUNDE INNOVATIVE DESIGN INST