Fish fillet freshness detection method based on hyperspectral imaging

Abstract

The invention discloses a fish fillet freshness detection method based on hyperspectral imaging. The method comprises the following steps: measuring fish fillet samples stored for different days according to a traditional national standard method; scanning the hyperspectral information of the corresponding fish fillet samples by utilizing a hyperspectral imaging system, and preprocessing a hyperspectral image; establishing a regression equation between a freshness index TVB-N value and the fish fillet freshness with hyperspectral characteristic wavelength, detecting the fish fillet samples to be detected, and calculating the freshness of the fish fillet samples to be detected. The optimal wavelength is selected and the freshness of the fish fillet samples are rapidly and nondestructively detected by employing the hyperspectral imaging technology, the time required for a traditional method is obviously reduced, the detection efficiency is improved, and the purpose of rapid, nondestructive and online detection can be effectively fulfilled.

Description

Technical field [0001] The invention relates to the field of freshness quality detection of aquatic products, in particular to a fish fillet freshness detection method based on hyperspectral imaging. Background technique [0002] Fish is an important part of aquatic products. Fish meat is delicious and has high nutrient content. Fish meat products are an important source of protein, amino acids, fats and other nutrients needed by humans, and are an important part of people's diet. Among them, the protein content is about 15% to 24%, and its unsaturated fatty acids have the effects of preventing and treating cardiovascular and cerebrovascular diseases, and are favored by consumers. Freshness is an important indicator of the quality of fish or fish products, and it is very important for the quality of the final product. After the fish die, the fish meat undergoes a series of physical and chemical changes. With the extension of the fish storage period, it will quickly lead to micr...

AI Technical Summary

Problems solved by technology

After searching, there is no relevant patent authorized at home and abroad. The Chinese patent application number is 201010262347.5, and the application titled "A Method and Device for Visually Detecting Fish Freshness Based on Olfactory Sense" is to use a chemical chromogenic agent to react with the gas to be detected. Before and after, the qualitative and quantitative analysis is realized by using the color change, but the color reaction is easily affected by the external conditions, and the sensitivity decreases after a long time working, which is easy to cause errors in the detection results

Chinese patent application No. 200710132639.5, titled "A Rapid Nondestructive Fish Freshness Detection Test Kit and Its Detection Method" and application No. 201010180216.2, named "A Rapid Nondestructive Detection Method for Freshwater Fish Freshness" Although the application can be achieved quickly, the stability is poor, and it cannot serve the online detection

Images