Real-Time Monitoring of the Quality Changes in Shrimp (<i>Penaeus vannamei</i>) with Hyperspectral Imaging Technology during Hot Air Drying.

As shown in Table 4 , the first-order moments show an overall increasing trend, and the second-order moments exhibit a decreasing trend; it indicates that the average intensity of the image color increases, and the color distribution becomes more uniform.

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It was clear that the contrast of the samples differed with increasing drying time, as denoted by the large differences in the gray value of the images, firstly exhibiting an increasing trend followed by a decrease in contrast ( Figure 8 a), which may be related to changes in the muscle texture during the shrimp-drying process.

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