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Video information acquiring method and apparatus

A technology of video information and acquisition method, which is applied in the field of image processing, and can solve problems such as smooth transition of screen brightness and flickering

Active Publication Date: 2017-05-10
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention discloses a method and device for collecting video information, which is used to solve the problem in the prior art that the screen brightness of the image collection device cannot transition smoothly and flicker occurs when switching between different exposure modes

Method used

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  • Video information acquiring method and apparatus
  • Video information acquiring method and apparatus

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] figure 1 It is a schematic diagram of a video information collection method provided by Embodiment 1 of the present invention, the method includes the following steps:

[0061] S101: If it is detected that a switch from the first exposure mode to the second exposure mode is detected, identify a target image brightness value in the first exposure mode.

[0062] The video information acquisition method provided by the embodiment of the present invention is applied to an image acquisition device. If the user switches the exposure mode, the image acquisition device can identify the first exposure mode and the second exposure mode before and after the switch. The process of identifying each exposure mode by the image acquisition device belongs to the prior art, and this process will not be described in detail in this embodiment of the present invention.

[0063] Wherein, the first exposure mode and the second exposure mode include: automatic exposure mode, gain priority mod...

Embodiment 2

[0072] On the basis of the above-mentioned embodiments of the present invention, for each exposure mode, the image acquisition device stores the corresponding relationship between the image brightness value corresponding to each exposure mode and the exposure time, gain and aperture size, if the second exposure mode For the automatic exposure mode, determining the corresponding relationship between the image brightness value corresponding to the second exposure mode and the exposure duration, gain and aperture size includes:

[0073] Keeping the exposure duration as the minimum exposure duration value and the gain as the minimum gain value, adjusting the size of the aperture from the minimum aperture value to the preset first aperture value, and determining the first variation range of the image brightness value, wherein the first aperture value greater than the minimum aperture value; saving the minimum exposure duration value, the minimum gain value, and the corresponding rel...

Embodiment 3

[0090] On the basis of the above-mentioned embodiments of the present invention, for each exposure mode, the image acquisition device stores the corresponding relationship between the image brightness value corresponding to each exposure mode and the exposure time, gain, and aperture size. If the second exposure The mode is a gain priority mode, and determining the corresponding relationship between the image brightness value corresponding to the second exposure mode and the exposure time, gain and aperture size includes:

[0091] Keep the gain at the minimum gain value and the exposure time at the minimum exposure time value, adjust the size of the aperture from the minimum aperture value to the maximum aperture value, and determine the seventh variation range of the image brightness value; for the seventh variation range of the image brightness value storing the minimum gain value, the minimum exposure duration value, and the corresponding relationship between the minimum ape...

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Abstract

The invention discloses a video information acquiring method and apparatus. The method is mainly applied to an image acquiring apparatus and comprises: recognizing a target image brightness value in a first exposure mode if it is detected that the first exposure mode is switched to a second exposure mode; determining a target exposure time length, a target gain and a target aperture size corresponding to the target image brightness value in the second exposure mode according to a saved relationship between the image brightness value corresponding to the second exposure mode and a group including the exposure time length, the gain, and the aperture size; configuring the image acquiring apparatus according to the target exposure time length and the target gain and adjusting the aperture of the image acquiring apparatus to the target aperture size so that the image acquiring apparatus acquires video information according to the target exposure time length, the target gain, and the target aperture size. The video information acquiring method and apparatus solve a problem that the screen brightness cannot achieve smooth transition and generates flashing when the image acquiring apparatus switches different exposure modes.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for collecting video information. Background technique [0002] In recent years, the application of image acquisition equipment in people's daily life and work has become more and more common. When using image acquisition equipment to shoot, the photographer often composes the picture of the shooting scene by switching the exposure mode to present different shots. effect, so as to attract viewers to watch or express their shooting intentions to viewers. [0003] In the existing image acquisition equipment, when the photographer switches the exposure mode, there will be a problem that the screen brightness cannot transition smoothly and flicker, which not only affects the shooting effect, but also causes a greater burden on the post-processing of the film. Contents of the invention [0004] The embodiment of the present invention discloses a video i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235
CPCH04N23/71H04N23/73
Inventor 瞿二平
Owner ZHEJIANG DAHUA TECH CO LTD