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Method and device for adjusting image property

An image and attribute technology, applied in the direction of color signal processing circuit, etc., can solve the problems of large amount of calculation and consume a lot of resources, and achieve the effect of improving efficiency, improving video effect and adjusting effect.

Active Publication Date: 2010-10-27
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0008] It can be seen that converting from the YUV model to the HSV model requires two color model conversions, and each color model conversion requires a large amount of calculation and consumes a lot of resources.

Method used

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  • Method and device for adjusting image property
  • Method and device for adjusting image property
  • Method and device for adjusting image property

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0061] see figure 1 , which is a flowchart of a method for adjusting image attributes according to an embodiment of the present invention. Specifically include:

[0062] Step 101, obtaining the image attribute parameters of the YUV image;

[0063] Specifically, the image attribute parameters include one or any combination of the following: brightness, contrast, saturation and chroma;

[0064] Step 102, adjusting the image attribute parameters according to a preset...

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Abstract

The invention discloses a method and a device for adjusting image property, wherein the method comprises the following steps that: obtaining the image property parameters of a YUV image; and adjusting the image property parameters according to a preset strategy, and obtaining the adjusted image property. After being applied, the method and the device provided by the embodiment for adjusting the image property omit two times of module conversion of YUV to RGB and RGB to HSV, prevent the problems of excessive calculation and to many consumed resources when the image property of the YUV image is adjusted, so that the occupied resources during the adjustment are very few because the property of the YUV image data is directly adjusted, thereby greatly improving the adjustment efficiency. In addition, the embodiment increases methods for dynamically adjusting the brightness of the image and improves the video effect of image adjustment. Through test and comparison, the adjustment effect of the invention is better than the method for adjusting the color property after converting through a color model.

Description

technical field [0001] The present invention relates to the technical field of image attributes, in particular to a method and device for adjusting image attributes. Background technique [0002] In order to better explain the image properties, the following is a brief description of the color model: [0003] YUV model: A color coding method adopted by the TV system, which is used to solve the compatibility problem between color TV and black and white TV, and is one of the commonly used color models at present. Y, U, V represent brightness signal and blue difference signal and red difference signal respectively. YUV is mainly used to optimize the transmission of color video signals, making it backward compatible with old black and white TVs. Compared with RGB video signal transmission, its biggest advantage is that it only needs to occupy very little bandwidth (RGB requires three independent video signals to be transmitted at the same time). Among them, "Y" represents the...

Claims

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Application Information

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IPC IPC(8): H04N9/64
Inventor 王伟简武宁胡扬忠邬伟琪
Owner HANGZHOU HIKVISION DIGITAL TECH
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