A method and system for realizing the high dynamic illumination range

A lighting range, high dynamic technology, applied in the field of image processing, can solve the problem of inability to achieve high dynamic lighting range effects, and achieve the effect of good light and shadow experience

Active Publication Date: 2009-12-02
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0017] The present invention provides a method and system for realizing high dynamic lighting range, which is used to solve the problem that the current high dynamic lighting range effect cannot be realized in fixed pipelines

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  • A method and system for realizing the high dynamic illumination range
  • A method and system for realizing the high dynamic illumination range
  • A method and system for realizing the high dynamic illumination range

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Embodiment Construction

[0050] In order to achieve the effect of HDR in the fixed pipeline, so that users who are equipped with low-end graphics cards that only support fixed pipelines can enjoy a better light and shadow experience, the present invention provides a system for realizing high dynamic lighting range, see 5 , which includes a sequentially connected compression unit, split unit, fixed pipeline and merge unit.

[0051] The compression unit is used to compress the source floating-point texture into a high-order integer texture.

[0052] The division unit is configured to equally divide the high-order integer texture output by the compression unit into low-order integer textures.

[0053] The fixed pipeline is used for rendering and decompressing the low-order integer textures output by the division unit one by one.

[0054] The merging unit is used for merging the decompressed integer textures output by each fixed pipeline.

[0055] Using the above system, the present invention provides a...

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Abstract

The invention discloses a method and a system for realizing a high dynamic lighting range, which are used to solve the problem that the high dynamic lighting range effect cannot be realized in a fixed pipeline at present. The method of the present invention comprises steps: A. Dividing the first integer texture obtained after compression into second integer textures; wherein the number of digits of the first integer texture is higher than that of the second integer texture; B. Dividing each low-order integer texture one by one Render in a fixed pipeline and decompress; C. Combine the decompressed integer textures to achieve the effect of high dynamic light range. Through the implementation of the present invention, the effect of HDR can be realized in the fixed pipeline, so that users equipped with low-end graphics cards that only support the fixed pipeline can enjoy better light and shadow experience.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and system for realizing a high dynamic illumination range. Background technique [0002] When a computer represents an image, and when a monitor displays an image, it uses 8bit (256) levels to distinguish the brightness of the image, but obviously the brightness level of several hundred units cannot reproduce the real lighting situation. For example: Each pixel in an ordinary graphics file that has not been processed by High Dynamic Range (HDR) technology is limited to a brightness range of 0 to 255. In an ordinary daytime landscape picture, the white clouds and the sun may both have the same brightness (both are pure white), but in fact the white clouds and the sun cannot have the same brightness. [0003] HDR technology is an image processing technology. Graphics cards that support the DirectX9.0 standard can use HDR technology to compress source floating-point textu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00
Inventor 刘皓
Owner TENCENT TECH (SHENZHEN) CO LTD
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