Contrast Enhancement Method Based on Gray and Its Distance Double-Weighting Histogram Equalization for 3D CT Images of PCBs

Table 1

Results of the enhancement indicators with different values of ().

			EME	EME_Michelson	EME_entropy	AME
	5301.4	113.3032	48.6657	−182.0618	1.6361	−1.1349
	4476.2	78.8758	50.7792	−171.4402	1.8711	−1.1121
	3707.7	60.0761	52.3497	−165.7646	2.0425	−1.0985
	3060.1	47.6518	54.3363	−161.2780	2.2999	−1.0839
	2532.7	38.5262	56.0590	−159.5976	2.6441	−1.0795
	2114.4	31.7885	57.3516	−157.5428	2.8432	−1.0694