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Image edge enhancement processing method and application

A technology of edge enhancement and processing method, which is applied in image enhancement, image data processing, image analysis, etc., and can solve the problems of inability to accurately locate the skin color point of the face, affecting the overall image enhancement effect, and high false detection rate.

Active Publication Date: 2020-12-04
MOLCHIP TECH (SHANGHAI) CO LTD
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  • Application Information

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Problems solved by technology

However, in the above methods, the color detection method can only distinguish between skin-colored points and non-skinned-colored points, and cannot accurately locate the skin-colored points of the human face, and the false detection rate is also high.
As an example, for example, the color of the beige texture floor that is common indoors is also within the skin color range. If it is treated as a skin color point and the edge enhancement strength is weakened, then the floor texture that should be enhanced more will not be effectively enhanced. The overall enhancement effect of the image

Method used

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  • Image edge enhancement processing method and application
  • Image edge enhancement processing method and application
  • Image edge enhancement processing method and application

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Embodiment

[0079] see figure 1 As shown, this embodiment provides an image edge enhancement processing method. The method comprises the steps of:

[0080] S100. Receive an input image separated into a luminance signal and a chrominance signal, where the luminance signal corresponds to the input luminance image, and the chrominance signal corresponds to the input chrominance image.

[0081] In this embodiment, the image data separated into the luminance signal and the chrominance signal may be one of YCbCr image data, HSV image data, and HIS image data. For example, in the case of YCbCr image data, the luminance signal is the Y signal and the chrominance signal is the chrominance (C) signal. A luminance signal refers to an electrical signal representing the brightness of a picture in a video system. When transmitting signals in a video system, signals representing chrominance information are usually overlapped with luminance signals to save frequency bandwidth for transmitting signals....

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Abstract

The invention discloses an image edge enhancement processing method and its application, and relates to the technical field of digital image processing. An image edge enhancement processing method, comprising the steps of: receiving an input image separated into a brightness signal and a chrominance signal; processing the input brightness image through a first parameter group applicable to non-human face skin color points to obtain a first edge value , process the input luminance image through the second parameter group applicable to the skin color point of the human face to obtain the second edge value; and perform skin color detection on the input chrominance image to obtain the skin color weight value of each pixel, according to the human The face area obtains the face skin color weight value of each pixel; the first edge value and the second edge value are mixed according to the face skin color weight value, and the edge value obtained by mixing is combined with the input brightness value for edge enhancement. The invention improves the edge enhancement effect of human face skin points without affecting the edge enhancement effect of non-human face skin color points.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to an image edge enhancement processing method and application. Background technique [0002] With the development of digital image processing technology, various methods for improving image quality are applied to video processors to provide users with high-quality video images. Among them, skin color detection and processing technology is an important branch of video image processing technology. Due to the interference of the light, electricity and thermal environment during shooting, the skin color of the human body may be inconsistent with the visual habits of human beings, resulting in the discomfort of human eyes. Therefore, it is necessary to detect and correct the skin color of the human body so as to make it look more natural and healthy, so as to conform to the visual habits of the human eye. However, the existing skin color detection and processing are u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/13G06T7/90
CPCG06T7/13G06T7/90G06T2207/30201G06T5/70G06T2207/10024G06T2207/20192G06T5/73G06V10/25G06V10/60G06V40/161
Inventor 何珊孙德印
Owner MOLCHIP TECH (SHANGHAI) CO LTD