Automatic classification method selection means and shrimp

The present invention discloses an automatic selection of shrimp classifying means comprises a feeding system, sorting channel, FIG mining system, image processing system and a classification system; a system for feeding the material to be sorted to output the shrimp single row sorting channel; sorting channel sequentially into buffer channel adapter and sampling channel, sampling channel into a plurality of separate channels, it is equipped with a plurality of buffer channel direction adjuster for feeding raw shrimp partition system output and adjust each single raw shrimps enter the corresponding channel of the single gesture; FIG mining shrimp feed system for image acquisition; rating system comprises a single row of air nozzles corresponding to the channel, the jet nozzle is controlled by the image processing system, with shrimp to blow into the different access chute; an image processing system for analyzing the image, the image of each gradation processing shrimp, according to the classification result, and signal control rating system. The present invention also discloses a method for automatic classification selection shrimp.