Picture processing method and device

A picture processing and picture technology, applied in the field of image processing, can solve the problems of increasing the cost of cameras, and achieve the effect of improving the details of dark parts, improving the signal-to-noise ratio, and low cost

Inactive Publication Date: 2015-08-05
SZ DJI TECH CO LTD
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Although this method can improve the picture quality to a certai

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  • Picture processing method and device

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[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0055] In the embodiment of the present invention, a comprehensive calculation is performed between a picture taken at the initial exposure and one or more pictures obtained by exposure based on a larger exposure value, and compensation is performed in units of pixels, specifically as follows: figure 1 It can be seen that when the exposure value is larger, the signal-to-noise ratio of the obtained image is higher. Therefore, the fusion...

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Abstract

The embodiment of the application provides a picture processing method, a device and an camera, wherein the method includes: during a shooting process of a current objective to be shot, shooting the objective to be shot based on a predetermined initial exposure value, obtaining corresponding initial picture; shooting the objective to be shot based on a predetermined exposure value, obtaining a compensation picture corresponding to the compensation exposure value, and the compensation exposure value being greater than the initial exposure value; calculating a pixel value of a pixel at each position in the initial picture, and the pixel value of the pixel at the compensation picture corresponding position, and obtaining a comprehensive pixel value of the pixel at each position; and generating the shot picture of this time based on the comprehensive pixel value of the pixel at each position. By adopting the application, the signal to noise ratio of the shot picture can be improved well, and the shade detail of the picture can be clearly displayed.

Description

【Technical field】 [0001] The present invention relates to the technical field of image processing, in particular to an image processing method, device and camera. 【Background technique】 [0002] High image quality is the core driving force for the improvement of digital image shooting methods and equipment. The quality of digital images is usually measured by the Signal-to-noise ratio (SNR). An ideal photo should contain exactly equal pixel values, assuming a perfectly uniform area is photographed. However, the camera is not ideal, and the noise in the shooting process mainly comes from the electrical characteristics of the sensor, which is reflected on the photo, forming a Gaussian distribution of pixel values ​​around a central value. Therefore, the signal-to-noise ratio can be used to measure the non-ideality of the camera imaging a uniform area. [0003] The traditional method of improving the signal-to-noise ratio is mainly to improve the image quality by improving t...

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Application Information

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IPC IPC(8): H04N5/217H04N5/235
CPCG06T5/008G06T5/50G06T2207/10016G06T2207/10024G06T2207/10144G06T2207/20012G06T2207/20208G06T2207/20221H04N23/81H04N23/743H04N23/741
Inventor 曹子晟王铭钰
Owner SZ DJI TECH CO LTD
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