Image enhancement of nano-dispersed N-(p-n-decyloxybenzylidene)-p-n-hexyloxy aniline using combined unsharp masking

Figures & data

Table 1. Phase variants, transition temperatures and enthalpy values of 10O.O6 pure and 1% ZnO nano-dispersed compounds.

Compound	Phase variants		Scan rate	G–K	I–G	C–I	A–C	N–A	I–N
10O.O6 Pure	NACIG	Cooling	10°C/min	75.02	–	91.65	–	–	111.07
–	–	–	ΔH kJ/mol	69.98	–	0.17	–	–	14.67
–	–	TM	–	73.90	83.80	88.80	94.0	105.80	110.20
10O.O6 + 1% ZnO znoBaTiO3	NACIG	Cooling	20°C/min	72.01	–	89.58	–	–	109.62
–	–	–	ΔH kJ/mol	49.87	–	3.51	–	–	11.03
–	–	TM	–	73.80	77.80	91.70	93.1	104.40	110.50

NACIG: nematic, smectic-A, smectic-C, smectic-I, smectic-G.

Figure 1. Proposed unsharp masking technique for contrast enhancement of LCD microscopic images. (a) original image, (b) filtered image, (c) contrast mask, (d) histogram equalised image and (e) contrast-enhanced image with weighted HE combined unsharp masking.

Figure 2. Isotropic-nematic transition in 10O.O6 pure compound at 110.3°C.

Figure 3. Nematic-smectic-A transition in 10O.O6 pure compound at 105.6°C.

Figure 4. Smectic-A–smectic-C transition in 10O.O6 pure compound at 94°C.

Figure 5. Smectic-C–smectic-I transition in 10O.O6 pure compound at 89°C.

Figure 6. Smectic-I–smectic-G transition in 10O.O6 pure compound at 84.2°C.

Figure 7. smectic-G-solid transition in 10O.O6 pure compound at 74.1°C.

Figure 8. Nematic transition in 1% ZnO nano-dispersed 10O.O6 compound at 109.5°C.

Figure 9. Nematic-smectic-A in 1% ZnO nano-dispersed 10O.O6 compound at 104.5°C.

Figure 10. Smectic-A–smectic-C in 1% ZnO nano-dispersed 10O.O6 compound at 93.3°C.

Figure 11. Smectic-C–smectic-I in 1% ZnO nano-dispersed 10O.O6 compound at 91.5°C.

Figure 12. Solid phase in 1% ZnO nano-dispersed 10O.O6 compound at 74°C.

Figure 13. DSC curve for 10O.O6 pure and 10O.O6 + 1% ZnO compounds.