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Projection display color reproduction method under normal lighting environment

A technology of projection display and color reproduction, applied in the field of color reproduction and color reproduction, to achieve the effect of low computing cost

Inactive Publication Date: 2010-12-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a projection display color reproduction method in daily lighting environment for the limitations of the existing projection display color reproduction technology

Method used

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  • Projection display color reproduction method under normal lighting environment
  • Projection display color reproduction method under normal lighting environment
  • Projection display color reproduction method under normal lighting environment

Examples

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Embodiment Construction

[0025] Generally speaking, the color reproduction process of a projector-based camera system can be implemented as figure 2 The flow chart shown is described. First, if D=[d r , d g , d b ] T represents the image color value vector, then the projector camera system first converts the input color value D in Converted to the excitation value I of each primitive color of the projector p , the realization of this process is determined by the principle of the projector’s color reproduction technology and the specific settings of the display parameters. The forward and reverse mapping relationships can be described as:

[0026] I r p ‾ = P - LU T r ( ...

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Abstract

The invention discloses a projection display color reproduction method under normal lighting environment, which comprises three parts, namely projection display color reproduction characterization, equivalent reproduction target color value determination, and equivalent reproduction of color. The projection display color reproduction characterization is used for analyzing and describing color characteristics of a projector camera system, a display surface and environmental lighting; the equivalent reproduction target color value determination is used for analyzing and determining the reproduction capacity of the whole system under the current display environment, and obtaining a target color value in the reproduction capacity range and equivalent with the input original image color according to the reproduction capacity; and the equivalent reproduction of color is used for processing the target color value and obtaining an input color value required by the reproduction target color value according to the input / output color conversion relationship. The method does not depend on the measurement of other physical equipment, has low calculation cost and is favorable for developing the projection display to the portable and flexible mobile application direction.

Description

technical field [0001] The invention discloses a color reproduction method in the field of projection display, and in particular relates to an equivalent color reproduction method when performing projection display on a common physical surface with ambient lighting and texture in daily life. Background technique [0002] Projection display is a display method that projects an image on an auxiliary surface. The large screen and the separation of the display screen from its own equipment are its two notable features, and it is usually based on a diffuse reflection white screen and a darkroom observation environment. With the widespread application of projection display, the traditional CRT projection display technology is gradually replaced by LCD, DLP, LCOS and other modern projection display technologies, and its application occasions are gradually expanding from high-end occasions such as educational multimedia, business conferences, and digital cinemas. To low-end occasion...

Claims

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Application Information

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IPC IPC(8): H04N9/31G06F3/14G06T5/00
Inventor 邹文海徐海松
Owner ZHEJIANG UNIV
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