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Method for reproducing projection display color of colorful surface

A technology for color reproduction and projection display, applied in the field of projection display, to achieve the effects of easy hardware integration, wide range of adaptation, and simple reproduction process

Inactive Publication Date: 2011-01-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a color surface projection display color reproduction method for the deficiencies of the existing projection display chromaticity color reproduction technology

Method used

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  • Method for reproducing projection display color of colorful surface
  • Method for reproducing projection display color of colorful surface
  • Method for reproducing projection display color of colorful surface

Examples

Experimental program
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Embodiment

[0074]As a specific implementation example, a projector model of VGA NEC LT 30+ and a camera model of HITACHI HV-D30 are used to form a projector camera experiment system. The number of color channels is 3, and the number of channel quantization bits is 8 bits. The projector and the camera are connected by a computer to control the input and output of image signals. The main frequency and memory are 2.13GHz and 1GB respectively. The RADEON R9200SE graphics card is used to output the image signal to the projector, and the image acquisition card is controlled by Matrox Meteor II / Multi-channel Input the image signal collected by the camera into the computer memory. Adjust the camera's field of view to include the entire projected display area, and adjust the camera's iris and shutter so that the projector's output luminance range is within the camera's dynamic range. It should be noted that the reproduction method of the present invention is not limited to the case where n is equ...

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Abstract

The invention discloses a method for reproducing the projection display color of a colorful surface. The method comprises the steps of characterizing a projector camera system and a display surface color, determining a chroma color reproduction target value and calculating and realizing the color reproduction. The step of characterizing the projector camera system and a display surface color is used for representing the conversion relation of the input / output colors of the projector camera system and the color of the display surface; the step of determining the chroma color reproduction target value is used for setting a proper chroma reproduction target according to the input color value and a color reproduction range of the system on the colorful surface; and the step of calculating and realizing the color reproduction is used for correcting the color value of an original input image according to the conversion relation of the input / output colors of the system, the display surface color and the color reproduction target value so as to obtain the input color value. The system can automatically finish the entire chroma color reproduction process without needing any other measurement equipment or calibration color cards, the reproduction process is simple and hardware integration is easy to realize.

Description

technical field [0001] The invention relates to a color reproduction method in the field of projection display, in particular to a chroma color reproduction method when projection display is performed on a color surface with random textures or patterns common in daily life. Background technique [0002] Projection display is one of the digital image reproduction methods commonly used in people's daily work and life. Compared with other display methods, projection display is a display method that projects images on an auxiliary surface. It has the remarkable feature of separating the display surface from its own equipment, so that the size of the projection display screen is not restricted by the size of its own equipment. In order to make the use of the projector more flexible and convenient, the equipment size of the projector gradually presents a development trend of small size, portable and mobile with the in-depth development of modern technology. As a result, projectio...

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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