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Gamma curve adjustment method and device

A gamma curve and adjustment method technology, applied in the direction of instruments, static indicators, etc., can solve the problems of increasing the production cost of the factory production line, and achieve the effects of simplifying the production process, reducing manufacturing costs, and improving production efficiency

Active Publication Date: 2017-02-15
SHENZHEN TCL DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, when the factory produces display devices, it needs to correct multiple Gamma curves (generally there are 9 curves), such as Gamma2.2 curves, Gamma2.6 curves, etc., to meet the needs of different scenarios, which needs to increase the production of the factory production line cost

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  • Gamma curve adjustment method and device
  • Gamma curve adjustment method and device

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] The present invention proposes a method for adjusting a gamma curve. In this embodiment, the gamma curve is applied to a television set, and can also be applied to projectors, cameras, computers, and other equipment, which are not listed here.

[0049] A gamma curve is a special tone curve that is usually a power function. The input sampling value of the monitor in the TV needs to be corrected by the gamma curve, and then output the actually displayed luminance value, which is then displayed on the monitor.

[0050] refer to figure 1 , in an embodiment of the present invention, the gamma c...

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Abstract

The invention discloses a gamma curve adjustment method and device. The gamma curve adjustment method comprises the following steps of: generating a reference gamma curve by a debugging device; according to the reference gamma curve, calculating by a linear interpolation method to obtain a predetermined number of auxiliary gamma curves; storing the reference gamma curve and the auxiliary gamma curves as desired gamma curves. By the technical scheme of the invention, in the process of producing display devices, just one gamma curve is corrected and then the other gamma curves are automatically generated, thereby improving the production efficiency and reducing the production cost of production lines.

Description

technical field [0001] The invention relates to the technical field of image display, in particular to a gamma curve adjustment method and device. Background technique [0002] Gamma (also known as Gamma) is a parameter used to characterize the brightness response characteristics of a display device. Generally, the relationship between the brightness displayed on the display device and the input level is close to an exponential curve (that is, a Gamma curve). The Gamma curve is a special tone curve. When the Gamma value is equal to 1, the curve is a straight line at 45° to the coordinate axis, which means that the input and output densities are the same. Gamma values ​​above 1 will darken the output, and Gamma values ​​below 1 will lighten the output. Due to the hardware of the graphics card or the display itself, there may be deviations in the brightness of the actual output image, and Gamma curve correction is used to correct this deviation of the image. [0003] At pre...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G2320/0673
Inventor 彭维林曹芝勇
Owner SHENZHEN TCL DIGITAL TECH CO LTD