Spectral curve reconstruction method, device and system

A spectral curve and reconstruction system technology, which is applied in the field of devices and systems, and spectral reconstruction methods, can solve problems such as undersampling, inability to cover around sampling points, and insufficient accuracy of spectral reconstruction results, etc.

Active Publication Date: 2018-03-23
BEIJING LUSTER LIGHTTECH
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Problems solved by technology

Due to the limitation of the number of sampling points, it leads to undersampling relative to the sampling accuracy requirements
Undersampling will lead to the fence effect when reconstructing the curve. The fence effect is that the surrounding area of ​​the sampling point cannot be covered, and the area that cannot be covered is the observation blind area
As a result, the accuracy of the spectral reconstruction results is insufficient

Method used

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  • Spectral curve reconstruction method, device and system
  • Spectral curve reconstruction method, device and system
  • Spectral curve reconstruction method, device and system

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Embodiment Construction

[0044]In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0045] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0046] Specific embodiments of the present application provide a spectral curve reconstruction method, device, and system. In this system, by changing the transmission response fun...

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Abstract

The invention provides a spectral curve reconstruction method, device and system. Sampling results of a first sampling point of a detected object are obtained, wherein the sampling results of the first sampling point comprise the sampling results of M channels of the sampling point; M sampling functions are determined according to the products of a light source output spectral function and spectral response functions of the M sampling channels of a sampling device respectively, wherein the M sampling functions comprise overlapping regions; a sampling array matrix is determined according to animpulse function group and the sampling functions, wherein the impulse function group comprises a plurality of unit impulse functions; an underdetermined equation set is determined through the sampling array matrix and the sampling results, wherein any solution of the underdetermined equation set is the spectral function of the first sampling point. According to the method, a transmission responsefunction of a light source or a camera is changed, so that the overlapping regions exist between different sampling points of the sampling functions formed by the output spectral function and the spectral response functions. The picket fence effect caused by under-sampling is avoided, and the sampling precision is improved.

Description

technical field [0001] The present application relates to the technical field of detection through spectral curves, in particular to a spectral reconstruction method, device and system. Background technique [0002] At present, the requirements for color quality control of printed matter are constantly increasing. This puts forward higher requirements for the corresponding color detection means. It is necessary to achieve high-precision real-time measurement of the spectral reflectance function of the printed matter surface. With the improvement of printing quality requirements for printed matter, the requirements for color quality control of printed matter are also continuously increased. This puts forward higher requirements for the corresponding color detection means. Especially for online color detection of printed matter, not only requires accurate measurement of printed color, but also requires extremely high detection speed. The essence of high-precision color det...

Claims

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Application Information

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IPC IPC(8): G06F17/16G06F17/12
CPCG06F17/12G06F17/16
Inventor 朱炫霖姚毅赵严
Owner BEIJING LUSTER LIGHTTECH
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