Image acquisition method, device and terminal equipment
An image acquisition device and image acquisition technology, which are applied in image communication, instruments, television, etc., can solve the problems of overexposure, high brightness of background parts, and insufficient exposure of portraits, and achieve the effect of improving visual effects and taking pictures freely and flexibly.
Active Publication Date: 2019-08-02
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
[0005] For this reason, the first purpose of the present invention is to propose an image acquisition method to realize the secondary exposure of portraits based on the whites of human eyes when taking pictures to solve the problem of underexposure in the exposed images in the prior art. , the problem is obviously darker, and at the same time the brightness of the background part is often too high, there is a problem of overexposure
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[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0036] The image acquisition method, device, and terminal device according to the embodiments of the present invention are described below with reference to the accompanying drawings.
[0037] Specifically, in general, photographers should try to avoid shooting objects under backlighting conditions, because backlighting is a situation where the subject is just between the light source and the camera (for example, the brightness of the background is much higher than that of the subject). situation), this situation can easily cause...
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The present invention provides an image acquisition method, device and terminal device, wherein the method includes: detecting the white of the human eye from a preview image, using the white of the human eye as a light metering point to perform light metering, and performing exposure according to the light metering result of the white of the human eye Compensation is performed to obtain a first exposure image, and the first exposure value of the first exposure image is adjusted to obtain a target exposure image. In the present invention, the exposure compensation is performed based on the white of the human eye to obtain the first exposure image, and the first exposure value of the first exposure image can be adjusted to obtain the target exposure image, so that the space-time phase of the primary exposure and the secondary exposure can be separated, so that the Take photos more freely and flexibly, while improving the visual effect of captured images.
Description
technical field [0001] The present invention relates to the technical field of terminals, in particular to an image acquisition method, device and terminal equipment. Background technique [0002] With the development of smart terminals, users can use the smart terminals to take pictures more and more frequently. In practical applications, when shooting, it is often encountered that the target object must be backlit. When taking pictures under backlight conditions, the traditional global automatic light metering method can be used to compensate the exposure of the captured image, so that the visual effect of the captured image is better. [0003] However, when there are relatively special parts in the target object, such as human faces and portraits, when taking pictures under backlight conditions, the image exposed by the traditional global automatic metering method will encounter underexposure and obviously darken the portrait part. At the same time, the brightness of th...
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IPC IPC(8): H04N5/232H04N5/235G06K9/00
CPCG06V40/18H04N23/80H04N23/70
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD