Image edge enhancement processing method and application
An edge enhancement and processing method technology, applied in image enhancement, image data processing, image analysis and other directions, can solve the problem of unable to accurately locate the skin color points of the face, affecting the overall enhancement effect of the image, and unable to effectively enhance the floor texture.
Active Publication Date: 2020-10-20
MOLCHIP TECH (SHANGHAI) CO LTD
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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
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[0080] see figure 1 As shown, this embodiment provides an image edge enhancement processing method. The method comprises the steps of:
[0081] 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.
[0082] 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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The invention discloses an image edge enhancement processing method and application, and relates to the technical field of digital image processing. The image edge enhancement processing method includes the steps of: receiving an input image separated into a luminance signal and a chrominance signal; processing the input luminance image through a first parameter group suitable for non-human face skin color points to obtain a first edge value, and processing the input luminance image through a second parameter group suitable for human face skin color points to obtain a second edge value; carrying out skin color detection on the input chrominance image to obtain a skin color weight value of each pixel point, and obtaining a human face skin color weight value of each pixel point according tothe face area of the input image; mixing the first edge value and the second edge value according to the human face skin color weight values, and combining the edge value obtained through mixing withthe input luminance value for edge enhancement. According to the method, the edge enhancement effect of the human face skin points is improved on the premise of not influencing the edge enhancement effect of the 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...
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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