Abstract:

This study aimed to examine the effectiveness of X-ray technique in the detection of fish bones with respect to
three aspects: optimization of working parameters of X-ray detector, analysis of fish bone distribution pattern and combined
application of X-ray technique and freezing technique. The results showed that for most marine fish fillets, the optimal
detection parameters were determined as follows: voltage range, 30–45 kV; current range, 3 000–6 000 μA; and brightness
range, 4–6. In term of fish bone distribution, the detection rates of fish bones in frozen fish fillets were higher than those
in unfrozen state, and artificial judgment of X-ray images for fish bones is more practical. By optimizing X-ray detector
parameters, ascertaining fish bone distribution pattern and combining freezing technique and X-ray technique, the quality
of X-ray image, the detection rate of fish bones and the visual sense of X-ray test personnel in aquatic products processing
enterprises were improved. Therefore, the problem of remaining fish bones in frozen marine fish fillets can be solved to a
certain extent.

Key words: X-ray, marine fish fillets, fish bones, parameter optimization, distribution pattern, freezing