Image processing method and image processing device
An image processing and image technology, which is applied in image communication, TV, color TV parts, etc., can solve the problems of not being able to present the original appearance, not considering the actual content of the image, and the impact of the image, etc.
Active Publication Date: 2018-09-04
ASUSTEK COMPUTER INC
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Problems solved by technology
For example, when the surrounding light is insufficient, the backlight or the ambient brightness is high contrast (a part of the environment with both extremely high brightness and extremely low brightness), the obtained image will be affected and cannot show the original appearance
[0003] In the prior art, most of the automatic exposure does not take into account the actual content of the image. Whether the exposure value is calculated by using the entire screen (that is, global metering) or the central weighted exposure is used to calculate the exposure value, it is possible to make the Areas of images or faces are too dark or too bright resulting in poor image quality
Even if the automatic exposure is calculated for the face area, when the face cannot be found (such as in a strong backlight environment), the existing automatic exposure technology still cannot obtain better image quality
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[0009] An image processing method and an image processing device according to preferred embodiments of the present invention will be described below with reference to related drawings, wherein the same elements will be described with the same reference symbols.
[0010] Please refer to figure 1 As shown, it is a functional block diagram of an image processing device 2 according to an embodiment of the present invention. Wherein, the image processing device 2 can be a tablet computer, a notebook computer, a smart phone, a multimedia audio-visual device, a portable video game device equipped with an image capture unit (such as a camera), or other devices equipped with a camera lens. Portable Electronic Devices. In addition, the image processing device 2 may also be an electronic device or system in the form of a fixed installation of monitoring equipment or a security camera system for monitoring.
[0011] The image processing device 2 includes an image capture unit 21 , an im...
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The present invention discloses an image processing method used for an image processing device, and the image processing device comprises an image acquisition unit, an image processing unit, an image identifying unit and an exposure adjusting unit. The image processing method comprises the following steps of using the image acquisition unit to obtain a first image, using the image processing unit to generate a first shade average brightness value of the first image, and using the image identifying unit to identify the first image; when a human face is identified from the first image, using the image processing unit to generate a first human face average brightness value, and according to the first shade average brightness value, the first human face average brightness value and a weight array, generating a first exposure value; and using the exposure adjusting unit to adjust the exposure of the first image according to the first exposure value.
Description
technical field [0001] The present invention relates to an image processing method and an image processing device, in particular to an image processing method and an image processing device capable of adjusting an automatic exposure value. Background technique [0002] In recent years, taking pictures, photography or video has become one of the important activities of modern people. Whether it is a laptop, a tablet or a mobile phone, they are all equipped with a camera, and people's demand for taking pictures of beautiful things or conducting video communication anytime, anywhere is also increasing. However, not all environments are suitable for taking photos, photography or videos at any moment. For example, when the surrounding light is insufficient, the backlight or the ambient brightness is high-contrast (a part of the environment with extremely high brightness and extremely low brightness at the same time), the obtained image will be affected and cannot show the origin...
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IPC IPC(8): H04N5/235H04N5/232
Inventor 郑义锜郭修瑞吴鼎汶李冠德
Owner ASUSTEK COMPUTER INC