Image processing method and apparatus

An image processing and image technology, applied in the direction of color signal processing circuits, luminance and chrominance signal processing circuits, etc., can solve the problems of high display content visibility, low backlight power consumption, etc.

Inactive Publication Date: 2015-10-21
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, higher visibility of display content and lower backlight power ...

Method used

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  • Image processing method and apparatus
  • Image processing method and apparatus
  • Image processing method and apparatus

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Experimental program
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Embodiment 1

[0096] The invention provides an image processing method, such as figure 1 As shown, the image processing method includes:

[0097] 101. Perform color space conversion on an image to be displayed to obtain a converted first image.

[0098] 102. Determine a brightness compensation strategy.

[0099] 103. Acquire brightness change data, and perform brightness compensation on a brightness component in the first image according to the brightness change data in combination with the brightness compensation strategy, to obtain a brightness compensation image.

[0100] 104. Determine a contrast-tone mapping strategy.

[0101] 105. In combination with the contrast-tone mapping strategy, perform contrast-tone compensation on the brightness compensation image to obtain an output brightness image.

[0102] 106. Determine an image transformation matrix according to the output brightness image, and process the image to be displayed according to the image transformation matrix to obtain a...

Embodiment 2

[0193] The present invention also provides an image processing device 2, such as image 3 As shown, the image processing device 2 includes a bus 20 for connecting each module, and the modules connected to the bus 20, specifically as follows:

[0194] A conversion unit 21, configured to perform color space conversion on the image to be displayed to obtain a converted first image;

[0195] A strategy determining unit 22, configured to determine a brightness compensation strategy;

[0196] The image compensation unit 23 is configured to acquire brightness change data, perform brightness compensation on the brightness component in the first image according to the brightness change data and in combination with the brightness compensation strategy, to obtain a brightness compensation image;

[0197] The strategy determination unit 22 is also used to determine the contrast-tone mapping strategy;

[0198] An image compensation unit 23, configured to perform contrast-tone compensatio...

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Abstract

The invention discloses an image processing method and apparatus, belonging to the image display field. The method is based on brightness compensation and contrast-tone adjustment, and successively performs brightness compensation and contrast-tone adjustment on an image to be displayed to obtain an output image after compensation processing, allowing the output image displayed by a display device to still possess enough contrast and tone, and meanwhile guarantee image details when the display device reduces brightness, and thereby allowing the image displayed by the display device to possess enough visibility while reducing the power consumption of the display device.

Description

technical field [0001] The invention belongs to the field of image display, in particular to an image processing method and device. Background technique [0002] Display technology is a window for human-computer connection and information display, and is widely used in various fields such as industry, military, transportation, entertainment, education, aerospace, and medical treatment. Self-luminous display devices such as light-emitting diode display (OLED) devices and non-self-luminous display devices such as liquid crystal display (LCD) devices. Among them, LCD equipment is favored by engineers and consumers for its clear picture quality, wide viewing angle, light and portable, low radiation, good health, and low price. It has developed rapidly and has become the current mainstream display equipment. [0003] In non-spontaneous display devices such as LCDs, the power consumption of the backlight accounts for more than 90% of the overall power consumption of the display d...

Claims

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Application Information

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IPC IPC(8): H04N9/77H04N9/64
Inventor 郑喆坤王露柯鹏苏浩楠崔玉
Owner XIDIAN UNIV
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