Multi-fruit detection method for fruit sorting, and device thereof

Abstract

The invention provides a multi-fruit detection method for fruit sorting, and a device thereof. The method comprises the following steps: S1, respectively performing top-down and bottom-up longitudinalboundary scanning on target fruits in collected target fruit images to obtain a first target fruit region; S2, respectively performing left-to-right and right-to-left horizontal boundary scanning onthe target fruit images in the target fruit images to obtain a second target fruit region; S3, calculating the sectional area of the first target fruit according to the first target fruit region, andcalculating the sectional area of the second target fruit according to the second target fruit region; and S4, determining the target fruit with a ratio of the large value to the small value of the first target fruit sectional area and the second target fruit sectional area being more than or equal to a preset threshold as multiple fruits. The method and the device can effectively detect multi-fruit mixing, avoid wrong sorting and improve the sorting accuracy.

Description

technical field [0001] The invention relates to the technical field of fruit processing, and more specifically, to a multi-fruit detection method and device in fruit sorting. Background technique [0002] In the process of fruit processing, it is often necessary to sort the fruits. In the mechanical fruit sorting method, the fruit is roughly sorted by setting mechanical hoppers of different sizes mainly according to the size of the fruit. The mechanical sorting method is very easy to cause damage to the fruits, and some of the smaller fruits fail to fall into the corresponding hoppers, but fall into the larger hoppers, resulting in poor sorting results. [0003] In the fruit sorting method using machine vision technology, it usually includes testing and evaluating the weight or volume of the fruit and the quality of the skin, judging the size by weight or volume, and judging the quality by skin quality. During the specific operation, weighing or size measurement is usually...

AI Technical Summary

Problems solved by technology

When calculating the size index, multiple smaller-sized fruits in one fruit tray will be misjudged as one larger-sized fruit, which will lead to wrong sorting, resulting in the situation where large-sized fruits and small-sized fruits are mixed in the same grade

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