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Image white balance compensation method and system for projector

A projector and white balance technology, applied in the field of image processing, can solve the problem that the white balance cannot be compensated to the original state, and achieve the effect of high compensation range

Inactive Publication Date: 2013-08-21
QISDA OPTRONICS (SUZHOU) CO LTD +1
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Problems solved by technology

Therefore, when the blue light with the original component of 200 is attenuated to the same degree, this method cannot compensate its white balance to the original state.

Method used

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  • Image white balance compensation method and system for projector
  • Image white balance compensation method and system for projector

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0040] The purpose of the present invention is to provide a method and system for compensating the white balance of a projector image, which can realize accurate compensation of the white balance of the projected image and has a higher compensation range.

[0041] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail ...

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Abstract

The invention discloses an image white balance compensation method for a projector. The image white balance compensation method comprises the following steps of: acquiring the attenuation degree of the color of a light ray of a lamp bulb of the projector; according to the attenuation degree, determining a voltage compensation range of compensation performed by adjusting the voltage formed when various color regions of a color wheel are irradiated by the lamp bulb, and a digital microscope compensation range of compensation performed by adjusting a working stage of a digital microscope elementof the projector; according to the voltage compensation range, adjusting the voltage formed when the various color regions of the color wheel are irradiated by the lamp bulb; and according to the digital microscope compensation range, adjusting the working state of the digital microscope element of the projector. The invention also discloses an image white balance compensation system for the projector. By the method and the system, the precise compensation for the white balance of a projected image can be realized, and the compensation range is higher.

Description

Technical field [0001] The invention relates to the field of image processing, in particular to a method and system for compensating the image white balance of a projector. Background technique [0002] White balance is an index that describes the accuracy of the white color generated by mixing the three primary colors of red, green, and blue in the display. White balance is a very important concept in the field of television photography, through which a series of problems of color reproduction and tone processing can be solved. [0003] The main working principle of the projector is: the light is emitted from the bulb in the projection body, and the projection light is projected onto the imaging plane such as the screen to form a projected image. As the projector's use time increases, under the same current intensity, the brightness or color of the light emitted by the lamp will be attenuated. [0004] In the RGB color model, if the attenuation of the three primary colors of red, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/20H04N5/74
Inventor 卓之威
Owner QISDA OPTRONICS (SUZHOU) CO LTD
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