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Colorimeter dark noise signal processing method and system

A signal processing and colorimeter technology, applied in the field of colorimeters, can solve problems such as spectral intensity errors, achieve the effect of improving repeatability accuracy and reducing extreme errors

Active Publication Date: 2020-09-01
SHANGHAI PRECISION MEASUREMENT SEMICON TECH INC
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Problems solved by technology

[0007] The purpose of the present invention is to provide a colorimeter dark noise signal processing method and system to solve the problem in the prior art that the measured spectral intensity has a large error due to changes in the intensity of the dark current

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  • Colorimeter dark noise signal processing method and system
  • Colorimeter dark noise signal processing method and system
  • Colorimeter dark noise signal processing method and system

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[0052]The present invention will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the present invention, and those of ordinary skill in the art based on the functions, methods, or structural changes made by these implementations Equivalent transformations or substitutions all fall within the protection scope of the present invention.

[0053] The technical solutions provided by various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0054] An embodiment of the present invention provides a colorimeter dark noise signal processing method, which is applied to a colorimeter dark noise signal processing system, combining figure 1 and figure 2 To illustrate, the colorimeter dark noise signal processing method includes:

[0055] Step 102 . Obtain the spectral intensity of the measured light beam ...

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Abstract

The invention provides a colorimeter dark noise signal processing method and system. The colorimeter dark noise signal processing method comprises: acquiring the spectral intensity of a measured lightbeam entering an exposure area in a sensor, and acquiring the dark noise intensity of a shielding area in the sensor; correcting the preset dark noise value of the exposure area sub-pixel based on the dark noise intensity of the shielding area to obtain the corrected dark noise intensity of the exposure area sub-pixel; and determining the difference between the spectral intensity and the light intensity corresponding to the corrected dark noise intensity as the light intensity of the measured light beam. The method is used for solving the problem that the measured spectral intensity has a large error due to the change of the dark current intensity.

Description

technical field [0001] The invention relates to the field of colorimeters, in particular to a method and system for processing dark noise signals of a colorimeter. Background technique [0002] A colorimeter is an instrument used to measure and characterize the perception of illuminants relative to the human eye, and the results of its detection are called chromaticity (CHROMATICITY). In order to increase the production rate of the instrument in industrial mass production and reduce the production cost of the enterprise, it is necessary to increase the measurement speed of the spectral colorimeter at low brightness, thereby reducing the acquisition time of the spectrum. However, the shortening of spectral acquisition time will inevitably reduce the signal-to-noise ratio of the spectrum, and the signal-to-noise ratio of the spectrum is an important indicator to measure the performance of the measuring instrument, that is, the ratio between the effective signal and the invalid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/361H04N5/359
CPCH04N25/62H04N25/63
Inventor 马骏蒲俊鹏
Owner SHANGHAI PRECISION MEASUREMENT SEMICON TECH INC
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