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Method for calibrating light source

A technology for calibrating light sources and standard light sources, which is applied in the field of calibrating light sources, can solve problems such as difficult control of detection procedures and inability to ensure product stability

Active Publication Date: 2011-06-29
ABILITY ENTERPRISE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the individual differences in the image sensor of each digital camera are added, the entire inspection process will become difficult to control, so the stability of the product cannot be guaranteed

Method used

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  • Method for calibrating light source

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Embodiment Construction

[0038] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, steps, features and methods of the method for calibrating light sources according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. Its effect is described in detail below.

[0039] see figure 1 Shown is a flow chart of an embodiment of the method for calibrating light sources in the present invention. In the method for calibrating a light source according to the embodiment of the present invention, a standard light source (light source), such as a standard light box, is firstly provided in step 11A. The standard light source may be, but not limited to, a light source specified by the International Commission on Illumination (Commission internationale del'éclairage, CIE). For example, the D series of standard light sources of...

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Abstract

The invention relates to a method for calibrating a light source. In one embodiment, lights emitted by a standard light source and a light source to be calibrated are captured by a standard image sensor so as to respectively obtain standard and nonstandard images. According to the standard and nonstandard images, standard and nonstandard luminance responses are respectively generated. The light source to be calibrated is adjusted till the nonstandard luminance response is same as the standard luminance response. In another embodiment, the lights emitted by the standard light source and the light source to be calibrated are captured by the standard image sensor, according to the sampling output of the standard image sensor, the standard and nonstandard chrominance responses are respectively generated so as to compensate a sensor to be detected.

Description

technical field [0001] The invention relates to an image sensor, in particular to a method for calibrating light sources. Background technique [0002] In order to ensure that the digital camera can meet the required quality when it leaves the factory, it is necessary to use a standard light source to test the digital camera. However, the price and maintenance cost of a true standard light source are very high, and its calibration procedure is very complicated and time-consuming, thus often resulting in a decrease in production efficiency. [0003] Furthermore, when testing digital cameras, there are usually multiple production lines going on at the same time. Due to the difference in the light source spectrum of each non-standard light source, the image sensor (such as a charge-coupled device (CCD)) of a digital camera obtains a different brightness and responds differently to each color. In addition, the individual differences of the image sensors of each digital camera ...

Claims

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Application Information

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IPC IPC(8): G01M11/00
Inventor 林珈帆李宜坚
Owner ABILITY ENTERPRISE CO LTD
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