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Image acquisition method and image acquisition device

An image acquisition and image acquisition unit technology, applied in the field of electronics, can solve the problems of difficult to achieve fast snapshot, slow focusing speed, increase the volume of electronic equipment, etc. Effect

Active Publication Date: 2019-01-15
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of electronic technology, portable electronic devices, such as smart phones, tablet computers, personal digital assistants, etc., integrate functional modules for image acquisition such as taking pictures. However, based on the purpose of portable electronic devices, there is a lack of focusing modules. Therefore, it is difficult for current portable electronic devices to focus during the image acquisition process, and the focusing speed is slow.
[0003] In the prior art, in order to increase the focusing speed, a phase focusing module can be added to the electronic equipment for focusing during the image acquisition process of the electronic equipment. Obviously, adding a phase focusing module will increase the volume and weight of the electronic equipment, which is not suitable for use in electronic equipment. It is used in portable electronic devices, so it is difficult for portable electronic devices in the prior art to quickly capture

Method used

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Embodiment 1

[0054] When the M image acquisition units are the same image acquisition unit, the shortest effective focus distances of the M image acquisition units are the same, for example, they are all 2 centimeters, and the entire focus distance range of the M image acquisition units is 2 centimeters to 2 centimeters. Infinity, the focus distance range of an image acquisition unit is set as a partial distance range in the entire focus distance range, M image acquisition units have M different focus distance ranges, and the M different focus distance ranges can overlap or not overlapping. Preferably, in order to focus faster, it is better that the M focusing distance ranges do not overlap, for example, M=3, that is, including 3 image acquisition units, then in order to make the focus distance ranges of the 3 image acquisition units not overlap, According to the calculation of the focusing time corresponding to different focusing distances, the shortest effective focusing distance to infi...

Embodiment approach 1

[0057] Embodiment 1: Based on the implementation principle similar to the foregoing Embodiment 1, the focus distance range of an image acquisition unit is set as a partial distance range in the entire focus distance range, but is set according to the shortest effective focus distance range of each image acquisition unit The focus distance range of each image acquisition unit, if any image acquisition unit does not obtain at least one focus point in the image acquisition area within its set focus distance range, it is controlled to stop focusing. For example, the electronic device includes 4 shortest For image acquisition units with different effective focusing distances, the shortest effective focusing distances are 2 cm, 10 cm, 50 cm, and 1 meter. The focus distance ranges of the four image acquisition units are set to be 2 cm to 10 cm, 10 cm to 50 cm, 50 cm to 1 meter, and 1 meter to infinity. For example, the image acquisition unit A set to focus range of 2 cm to 10 cm does...

Embodiment approach 2

[0058] Embodiment 2: The focus distance range of each image acquisition unit is not set, the focus distance range of each image acquisition unit is its own shortest effective focus distance to infinity, then each image acquisition unit is controlled from the shortest effective focus distance to infinity for the focusing process. The assumption in Embodiment 1 is adopted: the electronic device includes four image acquisition units with different shortest effective focusing distances, and the shortest effective focusing distances are 2 cm, 10 cm, 50 cm, and 1 meter respectively. Then the focusing distance range of the four image acquisition units is 2 cm to infinity, 10 cm to infinity, and 50 cm to infinity.

[0059] In the specific implementation process, M is an integer greater than or equal to 2, that is, the electronic device includes at least two image acquisition units, such as 2, 3, 4, etc. The number is limited, and the technical solution in the embodiment of the presen...

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Abstract

The invention discloses an image acquisition method and an image acquisition device. The image acquisition method is applied to electronic equipment comprising M image acquisition units, which work cooperatively, M being an integer larger than or equal to 2. The image acquisition method comprises the following steps: when the M image acquisition units are in an on state, controlling the M image acquisition units to carry out non-synchronous focusing on a first image acquisition region in a non-synchronous focusing mode, in the non-synchronous focusing mode, the M focusing planes of the M image acquisition units at any moment in the focusing process being different; and when the first image acquisition unit of the M image acquisition units obtains at least one focusing point in the a first image acquisition region, obtaining a first image, collected through the first image acquisition unit, in the first image acquisition region, wherein the first image acquisition unit is any one image acquisition unit in the M image acquisition units.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an image acquisition method and an image acquisition device. Background technique [0002] With the development of electronic technology, portable electronic devices, such as smart phones, tablet computers, personal digital assistants, etc., integrate functional modules for image acquisition such as taking pictures. However, based on the purpose of portable electronic devices, there is a lack of focusing modules. Therefore, it is relatively difficult and slow to focus in the image acquisition process of the current portable electronic device. [0003] In the prior art, in order to increase the focusing speed, a phase focusing module can be added to the electronic equipment for focusing during the image acquisition process of the electronic equipment. Obviously, adding a phase focusing module will increase the volume and weight of the electronic equipment, which is not suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
Inventor 李凡智
Owner LENOVO (BEIJING) LTD
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