Automatic focusing method and system, storage medium and equipment

An automatic focus and focus evaluation technology, which is applied to the parts of TV system, TV, and color TV, can solve the problems of low focus efficiency and poor reliability of automatic focus, so as to reduce costs, reduce video blur, The effect of saving autofocus time

Active Publication Date: 2022-01-11
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the object of the present invention is to propose an autofocus method, system, storage medium and equipment to solve the problems of poor autofocus reliability and low focus efficiency in the prior art

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  • Automatic focusing method and system, storage medium and equipment
  • Automatic focusing method and system, storage medium and equipment
  • Automatic focusing method and system, storage medium and equipment

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0052] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used to distinguish two entities with the same name or different parameters. It can be seen that "first" and "second" " is only for the convenience of expression, and should not be understood as limiting the embodiment of the present invention. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, of a process, method, system, product or other steps or elements inherent in a process, method, system, product, or device comprising a series of steps or elements.

[0053] Based on the above purpo...

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Abstract

The invention provides an automatic focusing method and system, a storage medium and equipment, and the method comprises the steps: in response to the starting of automatic focusing of a focusing lens, controlling a focusing motor to start rotation, and sequentially collecting a focusing evaluation value and a corresponding focusing position value of each frame of image; judging whether n-1 is an integral multiple of a preset frame interval M based on the nth frame of the current image; if yes, searching the maximum focusing evaluation value for in the focusing evaluation values of the current image and the previous image, using the focusing position value corresponding to the searched maximum focusing evaluation value as the maximum focusing position value, and judging whether the focusing evaluation value of the current image is larger than the focusing evaluation value of the (n-M) th frame image; if not, judging whether the difference value exceeds a preset threshold value; if yes, judging whether a continuous rising mark exists; if yes, controlling the focusing motor to stop rotating and rotate reversely, and making the focusing lens to move to the focusing position corresponding to the maximum focusing position value. According to the method, the reliability and efficiency of automatic focusing are improved.

Description

technical field [0001] The present invention relates to the technical field of artificial intelligence, in particular to an automatic focusing method, system, storage medium and equipment. Background technique [0002] Auto focus is to use the principle of object light reflection, the reflected light is received by the sensor on the camera, processed by the computer, and the way to drive the electric focus device to focus is called auto focus. [0003] The focusing process is to move the lens so that the imaging element moves to the best focus position. Moving the lens can directly use a stepper / motor, but the machine doesn't know where the plane of best focus is. People can know whether the imaging element is at the best focus plane by observing the clarity of the imaged image, but the machine does not know whether the image is clear, so it is necessary to let the machine know the clarity of the imaged image at the current focus position. The sharpness of the picture is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04N23/67H04N23/695
Inventor 袁秀阳张文明
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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