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Image enhancement method, device and system

An image enhancement and image technology, applied in the field of image processing, can solve the problems of poor enhancement effect, difficult to adapt to complex lighting changes, complicated methods, etc., and achieve the effect of increased contrast, improved overall or partial image features, and low software and hardware costs

Active Publication Date: 2019-07-02
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem solved by the invention is that the image enhancement process is difficult to adapt to complex illumination changes, the enhancement effect is poor and the method is complicated

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  • Image enhancement method, device and system

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Embodiment Construction

[0030] In the prior art, in the image enhancement method using histogram equalization processing, the enhancement effect is poor, and it is difficult to adapt to complex lighting changes. However, in the image enhancement method using non-histogram equalization processing, there are problems such as complicated method and complicated hardware structure.

[0031] In order to solve the above technical problems, the technical solution of the present invention provides an image enhancement method. In order to effectively improve the visual effect of the image, increase the sense of layering of the image, and make the image adapt to complex lighting changes, and achieve better imaging effects for users with different skin tones, the technical solution of the present invention is based on the Lp norm pair. The image is histogram equalized.

[0032] Performing histogram equalization processing on the image can improve the contrast and sharpness of the image. The histogram equalizat...

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Abstract

The invention discloses an image enhancement method, device and system, and the method, device and system are used for equalization processing of an image histogram based on an Lp norm. The method comprises the steps: obtaining the Lp norm of occurrence numbers of all orders of an image; and carrying out the histogram equalization of the image based on the Lp norm of occurrence numbers of all orders, so as to achieve the enhancement of the image. The method can enable the contrast ratio of the image to be effectively improved, improves the layering feel of an image, effectively improves the imaging effect, can enable the image to adapt to complex illumination changes, can obtain a better imaging effect for users with different skin colors, enables an obtained image to be more comfortable and natural in color, is simpler in implementation, and is lower in software and hardware cost.

Description

technical field [0001] The present invention relates to the technical field of image processing, and in particular, to an image enhancement method, device and system. Background technique [0002] Image enhancement occupies a very important position in image processing. Image enhancement is to emphasize or sharpen certain features of the image, such as edges, contours or contrast. Image enhancement methods are mainly divided into two categories, namely, the enhancement method in the spatial domain and the enhancement method in the non-spatial domain. [0003] In the spatial domain enhancement method, image histogram equalization and histogram adjustment are widely used image enhancement methods. However, the disadvantage of the histogram equalization method in the prior art is that it sometimes causes the problem of excessive enhancement of the image, and there is a problem that the noise of the image is obviously increased, and the local dark area is not enhanced. The pro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/40
Inventor 黄宜真林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD