Image signal processing method and system

An image signal and processing method technology, applied in image data processing, color signal processing circuits, image communication, etc., can solve the problem of only outputting black and white images, and achieve the effect of low noise

Active Publication Date: 2017-03-08
HANGZHOU HIKVISION DIGITAL TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and system for processing image signals, which are used to solve the problem that only black and white images can be output in low-illuminance environments, haze environments, and low-illuminance and haze environments in the security field

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0018] It should be noted that: IR-CUT double filter (also known as double filter switcher) refers to a set of filters built in the camera lens group. When the infrared sensor point outside the lens detects the change of light intensity , The built-in IR-CUT automatic switching filter can automatically switch according to the intensity of external light, so that the image can achieve the best effect. That is to say, in d...

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Abstract

The invention discloses an image signal processing method and system. The method comprises the steps of carrying out light sensitization on a visible light waveband of a to-be-imaged region light signal via a first imaging unit to generate a first image signal, wherein the first image signal includes color information; carrying out the light sensitization on at least infrared waveband of the to-be-imaged region light signal via a second imaging unit to generate a second image signal, wherein the second image signal includes brightness information; and carrying out synthesis on the first image signal and the second image signal to generate a synthetic image having the color information and the brightness information. According to the image signal processing method and system disclosed by the invention, the synthetic image having multiple advantages can be generated, and the requirements on two monitoring environments of low illumination and through-frog relatively concerned in the guard field can be met.

Description

technical field [0001] The invention relates to the security field, in particular to a method and system for processing image signals. Background technique [0002] In daily life, night is a time when various cases occur frequently. In the field of security and protection, in the low-light environment at night, the image effect of the camera is often the focus of people's attention. At present, the IR-CUT switching method is often used to take into account the monitoring image effects during the day and night. Its working principle is: at night in a low-light environment with insufficient light, the camera switches from the day mode that filters out infrared light through the IR-CUT switch. Switching to night mode with infrared band sensitivity allows the camera to obtain images with less noise in low-light environments, but infrared sensitivity will affect the camera’s perception of color, so the camera often outputs black and white images in night mode, thus losing The c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04H04N9/64
CPCG06T5/50H04N1/3871G06T2207/10024G06T2207/10048G06T2207/20221H04N5/265H04N9/646H04N23/951H04N23/71H04N23/74H04N23/76H04N23/11H04N23/90H04N23/10G06T7/90G06T3/0075G06T2207/30168G06T2207/30232H04N5/04
Inventor 范蒙俞海浦世亮
Owner HANGZHOU HIKVISION DIGITAL TECH
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