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Adaptive bottom video online mining system and method based on contrast resolution compensation

A technology of resolution and contrast, applied in CCTV systems, components of TV systems, TVs, etc., to achieve the effect of realizing machine vision and making up for insufficient contrast and resolution

Inactive Publication Date: 2011-09-14
谢丹玫 +3
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Problems solved by technology

[0003] Although the human sensory system has a good adaptive adjustment function, there are still some defects, and the visual system is no exception. Human visual contrast resolution is one of many human visual defects.

Method used

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  • Adaptive bottom video online mining system and method based on contrast resolution compensation
  • Adaptive bottom video online mining system and method based on contrast resolution compensation
  • Adaptive bottom video online mining system and method based on contrast resolution compensation

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 As shown, the self-adaptive underlying video online mining system based on contrast resolution compensation of the present invention includes a camera, a video capture card, a computer host and a display, and the video capture card obtains video frames from the camera in real time and sends them to the computer host , the host computer stores the original video and displays it in real time through the monitor; at the same time, the host computer calculates the average grayscale of the current video frame, and then obtains the optimal compensation factor for contrast resolution according to the average grayscale, and uses the optimal compensation factor to correct the current video frame. Frames are compensated in real time, then displayed on the monitor and stored synchronously.

[0036] Such as figure 2 As shown i...

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Abstract

The invention provides an adaptive bottom video online mining system and method based on contrast resolution compensation. The system comprises a camera, a video capture card, a computer host and a display. The method comprises the following steps: acquiring a video image transmitted from the camera by utilizing the video capture card; calculating the average gray of a current video frame; calculating the best compensation factor of contrast resolution according to the average gray; compensating the contrast resolution of the video frame by applying the best compensation factor; and displaying the compensated video in real time, and storing. By adopting the technical scheme in the invention, the video capture in a low illumination level environment can be compensated in real time, and bottom online mining of the real-time video images in the low illumination level environment can be realized, so that the defect of insufficient contrast resolution of people in a scotopic vision environment is overcome, and machine vision in the scotopic vision environment is realized.

Description

technical field [0001] The invention belongs to the technology of digital video processing, and in particular relates to a method for online mining and processing of video obtained under low illumination which is difficult for human vision to distinguish. Background technique [0002] Human vision is divided into scotopic vision under low illumination and photopic vision under normal illumination. Under scotopic conditions, the contrast resolution of human vision is very low. If it can be compensated, the contrast resolution of human beings under scotopic conditions can be greatly improved. Visually indistinguishable video images become clearly visible video images, just like cats, canine mammals, and birds such as nightingales have night vision functions. This technology is called bottom-level video mining. [0003] Although the human sensory system has a good adaptive adjustment function, there are still some defects, and the visual system is no exception. Human visual co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N5/202
Inventor 谢丹玫吕霞付谢依策刘晓华
Owner 谢丹玫
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