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Image processing method

An image processing and image preprocessing technology, applied in the field of image processing, can solve the problems of signal-to-noise ratio and color distortion, different reflection coefficients, uneven brightness, etc., to achieve the effect of true color, high signal-to-noise ratio and clear texture

Active Publication Date: 2020-09-15
SHANGHAI FULLHAN MICROELECTRONICS
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Problems solved by technology

However, due to the different reflection coefficients of objects of different materials under visible light images and near-infrared light images, the texture distribution and brightness distribution of near-infrared images and visible light images are quite different.
The existing fusion algorithm is prone to uneven brightness, unclear texture, signal-to-noise ratio and color distortion after fusion

Method used

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Embodiment Construction

[0041] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0042] Hereinafter, the terms "first", "second", etc. are used to distinguish between similar elements, and are not necessarily used to describe a specific order or chronological order. It is to be understood that these terms so used are interchangeable under appropriate circumstances. Similarly, if a method described herein includes a series of steps, the order in which these steps are presented is not necessarily the only order in which these steps can be performed, and some described steps may be omitted and / or...

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Abstract

The invention provides an image processing method. The image processing method comprises the steps that an image acquisition unit acquires a visible light image and a near-infrared image; an image preprocessing unit supplements the color and brightness of the visible light image to obtain an RGB image, and corrects the brightness of the near-infrared image to obtain an NIR image; an image fusion unit is used for fusing the RGB image and the NIR image; and an image output unit outputs the fused graph. According to the image processing method, fusion processing is carried out on the obtained visible light image and the near-infrared image, and respective characteristics of the visible light image and the near-infrared image are fully utilized, so that the image with uniform brightness, cleartexture, high signal-to-noise ratio and real color can be obtained to the greatest extent under the condition of low illumination.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method. Background technique [0002] Under low-light conditions, the camera is limited by the luminous flux, and the imaging effect is poor. In order to improve the low-light full-color imaging effect, in addition to using an ultra-high-sensitivity image sensor, it is to take the way of supplementary light. Common white light fill light is prone to light pollution, while near-infrared imaging has the structure closest to visible light, and the human eye is basically insensitive to infrared light, which can achieve the effect of gentle fill light. [0003] In the existing scheme, the optical imaging system can separate the light into the visible light image and the near-infrared light image by means of a spectroscopic device or a specially arranged sensor, and then use a fusion algorithm to fuse the visible light image and the near-infrared li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T7/90G06T7/40
CPCG06T5/50G06T7/90G06T7/40G06T2207/20221G06T2207/10048
Inventor 朱媛媛田景军詹进朱煜枫陈子遇
Owner SHANGHAI FULLHAN MICROELECTRONICS