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Method for adjusting intensity of flash lamp

A technology of intensity adjustment and flash light, applied in the direction of optics, light source, electric light source, etc., can solve problems such as over-bright or dark digital images, wrong estimation of flash light intensity, etc.

Inactive Publication Date: 2010-07-28
ALTEK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above problems, the present invention provides a flash light intensity adjustment method to solve the problem of too bright or too dark digital images taken due to wrong estimation of flash light intensity

Method used

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  • Method for adjusting intensity of flash lamp
  • Method for adjusting intensity of flash lamp
  • Method for adjusting intensity of flash lamp

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Embodiment Construction

[0030] The detailed features and advantages of the present invention described below are sufficient for any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the disclosed content, claims and accompanying drawings of this specification, any The related objects and advantages of the present invention can be easily understood by those skilled in the art.

[0031] The flashlight intensity adjustment method according to the present invention is applied to a digital camera with a flashlight. In this method, software or firmware programs can be built into the storage device of the digital camera device, and then the processor of the digital camera device executes the built-in software or firmware program to realize the flash light intensity adjustment method according to the present invention. Here, the digital camera device can be a digital camera (Digital Camera), a mobile phone with camera functio...

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Abstract

The invention discloses a method for adjusting the intensity of a flash lamp, which comprises the following steps: emitting a first pre-flash light; capturing a first pre-flash image under the first pre-flash light; emitting a second pre-flash light; capturing a second pre-flash image under the second pre-flash light; selecting the pre-flash image from the first pre-flash image and the second pre-flash image according to the comparison result of the first pre-flash image and the second pre-flash image; computing the flash intensity by means of the selected pre-flash image; emitting a main flash light having the computed flash intensity; capturing a main flash image under the main flash light; and outputting the captured main flash image, wherein the flash intensity of the second pre-flash light is different from that of the first pre-flash light.

Description

technical field [0001] The present invention relates to a method for adjusting the brightness of a camera, in particular to a method for adjusting the intensity of a flashlight. Background technique [0002] A flashlight is provided in the digital camera device to compensate for the lack of brightness of the subject when shooting. In other words, when the subject is in a low-brightness environment, the digital camera device will also fire the flash while shooting. The digital camera device can make the brightness of the subject in the digital image reach the desired value by means of the strong light emitted by the flashlight. [0003] Generally speaking, before the digital camera emits the main flash, it will execute the pre-flash in advance. The digital camera estimates the flash intensity of the main flash (also known as output intensity) according to the brightness caused by the pre-flash to the subject. [0004] In addition, the shooting modes of the digital camera d...

Claims

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Application Information

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IPC IPC(8): H05B37/02G03B15/03
Inventor 周詹闵卢宗斌
Owner ALTEK CORP
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