Method and system for quickly detecting freshness of edible meat

• Main Authors: WANG NAN, ZHANG XIA, ZHANG LIFU, HUANG CHANGPING, CEN YI
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2017
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a method for quickly detecting freshness of edible meat. The method comprises the following steps: S1) starting a light source and a miniature hyperspectral sensor to acquire original hyperspectral data of a to-be-detected edible meat sample; S2) preprocessing collected hyperspectral data, wherein the preprocessing includes one or more of noise reduction treatment, reflectivity calculation and characteristic enhancement process; S3) performing characteristic space alternation on the preprocessed hyperspectral data, thereby acquiring a hyperspectral characteristic value relative to No. i waveband in the characteristic space of to-be-detected meat; S4) selecting the characteristic value corresponding to a specific wavelength in the transformed characteristic space and constructing a freshness distinguishing index used for distinguishing the freshness level of an unknown meat sample. According to the method provided by the invention, the freshness index with high reliability is acquired th