A method and device for identifying target red dates in red date spectral images

Abstract

An embodiment of the present invention provides a method and device for identifying a target red date in a red date spectral image. The method includes: obtaining a polarized spectral image of red dates; based on the spatial frequency of each pixel in the polarized spectral image, the The target red dates in the polarization spectrum image are enhanced; the target red dates are identified from the enhanced polarization spectrum image. Since the characteristics of the target jujube in the image are enhanced by using the characteristic spectral polarization correlation and image spatial frequency correlation processing methods of jujube, the characteristics of the target jujube in the image become obvious, especially for images obtained under long-distance and complex lighting conditions. The small pixel scale in the jujube, and even the sub-pixel jujube features become obvious, which can be distinguished from the environmental background in the polarization spectrum image of the jujube, and the tiny pixel scale can be easily identified from the polarization spectrum image of the jujube , or even red dates at the sub-pixel scale.

Description

technical field [0001] The invention relates to the field of agricultural product quality detection, in particular to a method and device for identifying target red dates in red date spectral images. Background technique [0002] At present, the quality of jujube is detected mainly by obtaining near-infrared spectral images of jujube, and the physical and chemical characteristics of jujube are detected through the near-infrared detection model of jujube, and then the quality of jujube is determined according to the physical and chemical characteristics of jujube. [0003] Among them, when establishing the near-infrared detection model of red dates, it is necessary to obtain a large number of near-infrared spectral images of red dates in different environments. By extracting the spectral feature information of red dates from the obtained near-infrared spectral images of red dates, based on the extracted Based on the spectral characteristic information of jujube and the physic...

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Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to provide a method and device for identifying the target jujube in the jujube spectral image, so as to solve the problem that it is not easy to identify the jujube image corresponding to the tiny pixel scale from the near-infrared spectral image of the jujube

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