Edge Detection of Agricultural Products Based on Morphologically Improved Canny Algorithm

Table 2

Comparison of PSNR values of 3 image processing results.

PSNR value	Traditional Canny algorithm			The algorithm in this study
	Tomatoes	Fruit combination	Vegetable combination	Tomatoes	Fruit combination	Vegetable combination
0.01 salt and pepper noise	29.5583	26.6799	27.4921	36.1778	27.2180	28.2127
0.03 salt and pepper noise	27.5980	23.9080	24.5535	34.1983	26.4148	27.2765
0.05 salt and pepper noise	25.5190	22.1458	22.8285	31.5006	25.0028	26.1425