Camera noise and frame rate control method and device

A control method and a technology of a control device, which are applied in the field of digital cameras, can solve problems such as cleaning, difficult noise, and affecting image clarity, and achieve the effect of avoiding stuttering and ensuring clarity

Active Publication Date: 2014-10-01
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

Post-processing is to prepare the image for JPEG encoding before processing the noise. This method

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  • Camera noise and frame rate control method and device

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Embodiment Construction

[0016] The present invention provides a user-defined method and device for controlling camera noise and frame rate. Different from traditional wavelet noise reduction, this method and device control noise from the source. Through this method and device, users can The environment freely controls image noise, and has little impact on clarity. The method and device of the present invention will be introduced successively below in conjunction with the accompanying drawings.

[0017] The control method of camera noise and frame rate of the present invention, such as figure 1 shown, including the following steps:

[0018] Step s101, acquiring the gain of the camera in the current environment.

[0019] There are many factors that cause camera noise, such as power supply noise on the hardware, thermal noise caused by the heat dissipation of the image processing chip, and noise from the sensor itself. Among them, the excessive gain of the camera will lead to excessive preview and ima...

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Abstract

The invention discloses a camera noise and frame rate control method and device. To a noisy point generating main reason, image noisy points can be controlled from the aspect of gain adjustment, the gain can be adjusted in a user-defined mode, and further exposure time is synchronously and reversely adjusted to enable the preview brightness to keep unchanged. The change of exposure time can cause the change of the frame rate, the change of the frame rate can be directly reflected on the preview fluency and the picture definition, and a user can accurately adjust the gain according to the ambient brightness and feedback of the preview effect. Thus, the control method and device can improve the preview effect and the imaging quality from aspects of noisy points, the preview brightness, the definition and the fluency.

Description

technical field [0001] The invention relates to the technical field of digital cameras, in particular to a method and device for controlling camera noise and frame rate. Background technique [0002] At present, all cameras on the market, whether it is a mobile phone camera or a professional camera, will have noise in the pictures taken, especially in low-light scenes. [0003] In order to combat noise, the industry usually adopts post-processing methods, such as wavelet denoising. Post-processing is to prepare the image for JPEG encoding before processing the noise. This method is not only difficult to completely remove the noise, but also seriously affects the image clarity. Contents of the invention [0004] Based on the above situation, the present invention proposes a camera noise and frame rate control method and device to control the noise in the image while taking into account the frame rate to reduce damage to image clarity. To this end, the adopted scheme is as...

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Application Information

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IPC IPC(8): H04N5/357H04N5/235
Inventor 康健
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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