The invention discloses a
laser barcode reading device and a
barcode reading method. The reading device comprises a
blue light laser, a deflecting mirror, a swingable reflecting mirror, an optical collector, a
light filter, a photoelectric
receiver, an amplification
processing circuit, a processor connected with the amplification
processing circuit and controlling the
blue light laser, and a
power module. The reading method comprises the following steps of: receiving scanning optical signals; performing analog
digital conversion and acquisition of the scanning optical signals; performing
fast Fourier transform; removing high-frequency component; performing fourier inversion; calculating a threshold by using an Otsu method; performing binaryzation on
barcode signals according to the threshold; and decoding according to various barcode standards. The laser barcode reading device has the advantages of reasonable design, simple and convenient operation,
low input cost and good using effect and adopts the brand-new
blue laser scanning source to scan one-dimensional barcodes; and the invention also provides a barcode reading method with high recognition performance, strong resolution and high recognition precision so as to simplify an
electronic hardware part of the barcode reading device.