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A low-illuminance video image enhancement method and system

A video image and image enhancement technology, applied in image enhancement, image data processing, instruments, etc., can solve the problem of single image enhancement method and difficult to meet the needs of image enhancement, so as to avoid halo phenomenon, realize automation and intelligence The effects of simplification and labor saving

Inactive Publication Date: 2011-12-21
北京云加速信息技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0008] Through the above investigation and analysis, it is known that there is no real-time high-definition video enhancement system in the domestic market so far, and the method of image enhancement is relatively simple, which is difficult to meet the needs of image enhancement in complex environments

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  • A low-illuminance video image enhancement method and system
  • A low-illuminance video image enhancement method and system
  • A low-illuminance video image enhancement method and system

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Embodiment Construction

[0037] The method of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 as shown, figure 1 It is a low-illuminance video image enhancement system diagram of the present invention. The system realizes the real-time enhancement of 5 million high-definition video images and applies it to the monitoring system. A real-time image enhancement system, especially an enhancement system based on high-definition images, has very strict requirements on the performance of the enhancement algorithm and the performance of the system due to its huge amount of data. The enhancement system is implemented on the platform of visual studio, and human-computer interaction is also designed in a humanized way, in which various modes of enhancement are designed, and the comparison effect before and after video enhancement is given.

[0039] In addition to the performance of real-time proce...

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Abstract

The present invention relates to a low-illuminance video image enhancement method and system. The steps of the method include: according to the Weber-Fechner law, performing brightness layering on the input image to obtain a low-contrast area, a De Vries area, a Weber area and a saturated area ;Collect low-illuminance high-definition video images as a training set, and carry out brightness layering on the images in the training set; take the image enhancement quality evaluation function as the objective function, and use an iterative algorithm to adjust the Retinex parameters of the three image sets until reaching the target function The value is optimal; use the obtained three parameters to perform image enhancement on low-contrast area images, De Vries area images and Weber area images; use gradient domain image enhancement algorithm for image processing on the obtained saturated area images; image enhancement after image enhancement The result image is processed by normalizing the gray range as a whole; the obtained results are processed in parallel and then output.

Description

technical field [0001] The invention relates to image enhancement processing, in particular to a low-illuminance video image enhancement method and system. Background technique [0002] The purpose of image enhancement is to improve the visual effect of the image. For the application of a given image, purposefully emphasize the overall or local characteristics of the image, expand the difference between different object features in the image, and meet the needs of some special analysis. The method is to add some information or transform data to the original image by certain means, selectively highlight the interesting features in the image or suppress or even cover up some unnecessary features in the image, so that the image matches the visual response characteristics. In the process of image enhancement, without analyzing the reasons for image quality degradation, the processed image does not necessarily approach the original image. Image enhancement technology can be divi...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06K9/66
Inventor 蔚晓明
Owner 北京云加速信息技术有限公司
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