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Image enhancement circuit and method

An image enhancement and circuit technology, applied in color signal processing circuits, electrical components, image communication, etc., can solve the problems of over-enhancement of images, inconspicuous enhancement of contrast, and unnatural image effects, etc., to improve regional contrast and reduce effect of complexity

Active Publication Date: 2021-07-16
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention lies in the image effect caused by the existing image technology is excessively enhanced, the effect of contrast enhancement is not obvious, and the image effect is unnatural. Image enhancement circuit and method for

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  • Image enhancement circuit and method

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Embodiment Construction

[0053] The following is an illustration of the implementation of the "image enhancement circuit and method" disclosed in the present invention through specific specific examples. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only for simple illustration, and are not drawn according to the actual size, which is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

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Abstract

The present invention proposes an image enhancement circuit, which includes: a comparison circuit, which receives an image input signal to output a comparison signal; an image segment circuit, which receives the image input signal, to output an image segment signal; a feature calculation circuit, which Electrically connected to the comparison circuit to receive the comparison signal and output a characteristic signal; a weight calculation circuit electrically connected to the characteristic calculation circuit to receive the characteristic signal and output a weight signal, and a global mapping circuit. It is electrically connected to the weight calculation circuit to receive the weight signal and output an image output signal.

Description

technical field [0001] The invention relates to an image enhancement circuit and method, in particular to an image enhancement circuit and method based on human vision and area contrast. Background technique [0002] Existing image enhancement technologies are used to enhance the visual experience of the human eye for images, such as enhancing the sharpness, stereoscopic effect, regional contrast, and other details of the image, making it easier for the naked eye to identify. [0003] The above-mentioned prior art includes using a histogram, dismantling and enhancing specific frequency bands by frequency, and using Retinex for image enhancement. However, the above method may easily cause problems such as over-enhancement of the image, inconspicuous enhancement of contrast, unnatural image effect, high complexity of algorithm and corresponding hardware, and the like. [0004] Therefore, there is a need to provide circuits and methods that can solve the above problems and eff...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64
CPCH04N9/646
Inventor 姜昊天周旸庭陈世泽
Owner REALTEK SEMICON CORP