Integration of Artistic Visual Elements in Packaging Design Based upon Pattern Recognition Technology

Table 5

Comparison of improved threshold setting method and other denoising methods PSNR.

Noise variance	Noisy image	Mean filter	Median filter	Wiener filter	Low frequency filtering	Max min threshold	Fixed threshold is optimal	Improvement threshold
0.005	22.34 72	29.1196	28.721 7	29.3530	29.4043	28.1 591	29.6920	29.6456
0.01	19.5198	27.51 7 7	26.4325	26.8065	27.1020	27.095 5	28.2573	28.4594
0.02	16.9145	25.5021	23.9832	24.21 62	24.4521	26.2260	26.9159	27.3687