METHOD FOR ASSESSING GROWTH OF FISH IN FRESHWATER RESERVOIRS BY INVERSE CALCULATIONS ON FISH SCALES ON COMPUTER Russian patent published in 2024 - IPC A01K61/00 G06T7/00 

FIELD: fishing.

SUBSTANCE: invention relates to the field of fishery in the field of fish industry and can be used for planning volumes of industrial and recreational catch of silver carp. Silver carp is sampled, the scales of which are alternately laid out between slides. Their photographs are taken through the eyepiece of the binoculars. Images are transferred to a computer and optimized for size, brightness and colour. Markers are set on proposed annual rings and measurements are taken. Inverse calculations are calculated by formula Ln=Vn/V(L-a)+a, where (cm): Ln is the length of the fish at the age of n years, L is the commercial length of the fish, Vn is the distance from the annual ring to the centre of the scale at the age of n years, V is the distance from the edge of the scale to the centre of the scale, a = 2 is the silver carp fry length before the scale setting. Number of flakes for obtaining photographs is calculated by the formula: N = −0.440 + 261.575/X, where: N is the number of flakes, pcs., X is the product of the longitudinal and transverse diameters of the flakes, mm.

EFFECT: invention increases reliability of results and speeds up the process of processing materials.

1 cl, 2 dwg, 1 tbl