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Illumination compensation method based on bionic spiral and image enhancement method

A technology of image enhancement and illumination compensation, applied in the field of image processing, which can solve the problems of inability to distinguish edges and lack of rich details in overexposed areas.

Active Publication Date: 2018-09-18
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0008] D. The detail information of the overexposed area is not rich: in the overexposed high-brightness image, the traditional Retinex mainly perceives the structural information of the image through the brightness level of each pixel in the neighborhood; for the color image, when the overexposed image When the luminance levels on both sides of an edge are the same, the edge cannot be distinguished only by luminance information

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  • Illumination compensation method based on bionic spiral and image enhancement method
  • Illumination compensation method based on bionic spiral and image enhancement method
  • Illumination compensation method based on bionic spiral and image enhancement method

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Embodiment Construction

[0061] as attached figure 1 As shown, the present invention provides a kind of image enhancement method based on retinex theory, comprises the following steps:

[0062] Step S1, acquiring the original image to be processed;

[0063] Step S2, separating the brightness layer and color layer of the image, wherein the color layer is reserved for the original attributes of the object; the brightness layer contains illumination information for separate processing;

[0064] Step S3, analyzing the illuminance of the bionic spiral on the luminance layer, and obtaining a new luminance layer according to the adaptive smoothing algorithm;

[0065] Step S4, combining the new brightness layer with the original color layer to obtain an enhanced image.

[0066] Those skilled in the art can understand that the original image to be processed acquired in step S1 is usually a color image, but the present invention is not limited thereto. The original image acquired in step S1 may also be a grays...

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Abstract

The invention provides an illumination compensation method based on a bionic spiral and an image enhancement method. The image enhancement method comprises: S1, a to-be-processed original image is obtained; S2, a brightness layer and a color layer of the image are separated, wherein the color layer is own attribute reservation and the brightness layer includes illumination information for separateprocessing; S3, an illumination analysis of a bionic spiral is carried out on the brightness layer and a new brightness layer is obtained based on an adaptive smoothing algorithm; and S4, the new brightness layer is combined with the original color layer to obtain an enhanced image. With the method provided by the invention, the brightness of the bright part of the image is reduced, the brightensof the shadow part is enhanced, and the brightness f the whole image becomes uniform, so that the details of the extremely high brightness part and the extremely low brightness part are represented;and the operation efficiency is improved.

Description

technical field [0001] The invention relates to an image enhancement method, in particular to an image enhancement method capable of processing spatial high dynamic range uneven illumination images, and belongs to the technical field of image processing. Background technique [0002] For robot astronauts, the changing light environment poses a great challenge to intelligent recognition. The dynamic range of spatial light intensity is high, and since there is no atmosphere to attenuate and scatter the light, the light intensity entering the visual system is very high, and the area without direct light is a dark background, and the brightness contrast between the two is strong. The space in the space station cabin is narrow and the surface of the device is mostly made of metal, which has strong reflection of light; moreover, due to the shadow of the direct light near the porthole, there will be some highlighted areas and shadows, which makes the lighting environment in the cab...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T15/50G06T7/90
CPCG06T7/90G06T15/506G06T2207/10024G06T5/92
Inventor 魏博胡磊邓聪颖李艳生周详宇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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