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Exposure control method, device and equipment and computer storage medium

A technology of exposure control and integration time, applied in the field of image processing, it can solve the problems of over-exposure or under-exposure of the target object, and the inability to obtain the best accuracy of the depth image, so as to achieve the best accuracy and improve the image quality.

Active Publication Date: 2021-10-29
WUHAN JUXIN MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing exposure control methods may lead to overexposure or underexposure of the target object, so that the accuracy of the depth image cannot be optimized.

Method used

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  • Exposure control method, device and equipment and computer storage medium
  • Exposure control method, device and equipment and computer storage medium
  • Exposure control method, device and equipment and computer storage medium

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Embodiment Construction

[0034] In order to understand the characteristics and technical contents of the embodiments of the present application in more detail, the implementation of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present application.

[0035] 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 terms used herein are only for the purpose of describing the embodiments of the present application, and are not intended to limit the present application.

[0036] In the following description, references to "some embodiments" describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or a different sub...

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Abstract

The embodiment of the invention discloses an exposure control method, device and equipment and a computer storage medium. The method comprises the following steps: acquiring a phase mean image, an amplitude image and a depth image corresponding to a current image frame; determining a first target block in the phase mean image and a second target block in the amplitude image; counting the number of pixels outside the pixel threshold range of the first target block to obtain a counted pixel number; under the condition that the statistical pixel number does not exceed the first threshold value, obtaining a depth block corresponding to the second target block from the depth image, and calculating a depth mean value of the depth block; and determining a target integral time corresponding to the depth mean value according to a corresponding relationship between the integral time and the depth, and determining an exposure parameter of the next image frame according to the target integral time. Therefore, the integral time can be adjusted to be optimal, so that the accuracy of the image is improved, and meanwhile, the imaging quality of the image is improved.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular to an exposure control method, device, equipment and computer storage medium. Background technique [0002] With the advancement of technology, Time Of Flight (TOF) cameras have developed rapidly, and TOF cameras are also widely used in many fields due to their unique performance. The TOF camera can actively transmit continuous light pulses to the target object, and then use the sensor to receive the light pulses reflected from the target object, and obtain the distance of the target object by detecting the flight (round trip) time of the emitted and received light pulses. That is to say, the TOF camera can not only obtain the two-dimensional grayscale image of the target object, but also obtain the depth image of the target object. [0003] For TOF cameras, the accuracy of the depth image is not only related to the generation principle, but also related to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235
CPCH04N23/73
Inventor 田照银吴昊刘德珩明幼林陈海飞
Owner WUHAN JUXIN MICROELECTRONICS CO LTD