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Speckle image quality recognition method and system based on image feature description

A speckle image and image feature technology, applied in the field of image processing, can solve problems affecting the quality of holograms, etc., and achieve the effect of accurate and reliable detection results, less calculation amount, and faster calculation speed

Active Publication Date: 2017-03-22
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

[0004] The speckle phenomenon was discovered as early as Newton's era, but the existence of speckle was only mistaken for a kind of optical noise in holographic technology, which seriously affected the quality of hologram

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  • Speckle image quality recognition method and system based on image feature description
  • Speckle image quality recognition method and system based on image feature description

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specific example

[0093] In order to further illustrate this solution, the present invention also provides a specific example of a speckle image quality recognition method based on image feature description, the specific content is as follows:

[0094] S1: Batch read in the required images and convert them into grayscale matrices and put them in the same array. The process of preprocessing and feature extraction is as follows Figure 7 Shown:

[0095] 1) Data acquisition: In order to enable the computer to classify and identify various phenomena, it is necessary to use symbols that can be operated by the computer to represent the research object. Through measurement, sampling, and quantization, two-dimensional or one-dimensional waveforms can be represented by matrices or vectors. This is the process of data acquisition.

[0096] 2) Preprocessing: The purpose of preprocessing is to remove noise, strengthen useful information, and restore the degradation phenomenon caused by input measuring in...

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Abstract

The invention provides a speckle image quality recognition method and system based on image feature description, and the method comprises the steps: collecting target speckle images; carrying out the preprocessing of the target speckles image according to the source of each target speckle image; extracting the features of each target speckle image, carrying out the histogram feature description and PCA (principal component analysis) of each target speckle image according to the extracted image features, and obtaining a standard speckle image and a standard parameter vector; and carrying out the comparison and recognition of the target speckle images and the standard speckle image or the standard parameter vector. The system comprises a collection module, a preprocessing module, a standard obtaining module, and a recognition module. The method and system are high in recognition precision, are small in calculation burden, are high in calculation speed, accurately and effectively achieve the quality recognition of the speckle images, enables the detection result of the speckle interference measurement to be precise and reliable, and provides precise technical support for the detection application research of deformation or displacement information of an object.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a speckle image quality identification method and system based on image feature description. Background technique [0002] Today, with the rapid generation and exchange of information, images are one of the main ways to obtain information. Since the invention of the electronic computer, image processing technology has developed rapidly, and its application has become more and more extensive. Image technology is widely used in scientific research, industrial production, national defense technology, aerospace, medical and health, traffic management and other fields. [0003] However, directly acquired images often cannot meet specific needs, so it is necessary to process and classify the images, which is image processing. The so-called image processing mainly refers to digital image processing, that is, to process digital images using computer technology. With the rapid...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06K9/62
CPCG06V10/507G06F18/24133
Inventor 赵玥赵健茹昊
Owner BEIJING FORESTRY UNIVERSITY
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