Optical definition testing method and device

A test method and test device technology, applied in the field of optics, can solve the problems of narrow application range and low accuracy

Pending Publication Date: 2020-05-19
JOURNEY TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It aims to solve the problems of narrow application range and low accuracy of optical clarity evaluation methods in the prior art

Method used

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  • Optical definition testing method and device
  • Optical definition testing method and device
  • Optical definition testing method and device

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Embodiment Construction

[0052] The following description and drawings fully illustrate specific embodiments of the present invention to enable those skilled in the art to practice them. The examples only represent possible changes. Unless explicitly required, individual components and functions are optional, and the order of operations can be changed. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The scope of the embodiments of the present invention includes the entire scope of the claims, and all available equivalents of the claims. In this document, each embodiment may be individually or collectively denoted by the term "invention", this is only for convenience, and if more than one invention is actually disclosed, it is not intended to automatically limit the scope of the application to any A single invention or inventive concept. In this article, relational terms such as first and second are only used to distinguish one ent...

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Abstract

The invention discloses an optical definition testing method and a device, and relates to the technical field of optics, and the method comprises the steps: obtaining an original image and a corresponding reference image; obtaining a comparison image of the original image and the reference image according to the difference between the original image and the reference image; obtaining the image information entropy of the normalized comparison image according to the comparison image; according to the comparison image, obtaining a sharpness pre-evaluation result after sharpness evaluation function operation; and when the difference between the definition pre-evaluation result and the image information entropy is smaller than a preset threshold, determining the definition pre-evaluation resultas the optical definition. The optical definition testing method disclosed by the invention is wide in applicability and high in result credibility.

Description

Technical field [0001] The present invention relates to the field of optical technology, in particular to a method and device for testing optical clarity. Background technique [0002] Among the evaluation indexes of the imaging quality of optical imaging equipment, the optical clarity of the imaging result is one of the important indexes. Therefore, the test of optical clarity is an indispensable step for evaluating optical equipment. [0003] In the prior art, the sharpness evaluation function can be used to evaluate the sharpness of the imaging of the optical device, and the imaging results of the optical system are calculated through various sharpness evaluation functions to calculate the corresponding sharpness value. The main advantage of this method is that the system is simple and the amount of calculation is small. [0004] However, the sharpness evaluation function can only be used as a comparison test, not as an absolute measurement for lateral comparison. Different sharp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/50G06T5/10
CPCG06T7/0002G06T5/10G06T5/50G06T2207/10004G06T2207/20056G06T2207/30168G06T2207/20216
Inventor 刘军郑昱
Owner JOURNEY TECH LTD
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