Tongue Diagnosis Method Based on Comparative Analysis of Tongue Image Chromatography

Wenwen Shang; Yawei Wang; Shuangshuang Xue; Guangwei Peng; Hao Han; Yuanyuan Xu

doi:10.3788/LOP57.031701

Journals >Laser & Optoelectronics Progress >Volume 57 >Issue 3 >Page 031701 > Article

Laser & Optoelectronics Progress
Vol. 57, Issue 3, 031701 (2020)

Tongue Diagnosis Method Based on Comparative Analysis of Tongue Image Chromatography

Wenwen Shang¹, Yawei Wang², Shuangshuang Xue², Guangwei Peng², Hao Han¹, and Yuanyuan Xu^2、*

Author Affiliations

¹School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China

²Faculty of Science, Jiangsu University, Zhenjiang, Jiangsu 212013, China

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DOI: 10.3788/LOP57.031701 Cite this Article Set citation alerts

Wenwen Shang, Yawei Wang, Shuangshuang Xue, Guangwei Peng, Hao Han, Yuanyuan Xu. Tongue Diagnosis Method Based on Comparative Analysis of Tongue Image Chromatography[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031701 Copy Citation Text

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Fig. 1. Tongue image segmentation

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Simulation diagrams of the superposition of tongue image positive and negative films. (a) Light red; (b) light white; (c) red; (d) twilight; (e) cyan-blue; (f) purple

Fig. 2. Simulation diagrams of the superposition of tongue image positive and negative films. (a) Light red; (b) light white; (c) red; (d) twilight; (e) cyan-blue; (f) purple

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Fig. 3. Difference of synthetic film simulation parameters L^*, a^*, and b^*

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Fig. 4. Experimental results of superposition of tongue image positive and negative films. (a) Light red; (b) light white; (c) red; (d) twilight; (e) cyan-blue; (f) purple

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Fig. 5. Scatter plot of chromatographic spatial distribution. (a) Light red; (b) light white; (c) red; (d) twilight; (e) cyan-blue; (f) purple

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Fig. 6. Scatter plot for tongue color classification of synthetic films

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Fig. 7. Parameter L^* line of tongue image synthetic film

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Physique	Chroma value	Light red( $\begin{matrix} \bar{x} \end{matrix}$ ±s)	Light white( $\begin{matrix} \bar{x} \end{matrix}$ ±s)	Red/twilight( $\begin{matrix} \bar{x} \end{matrix}$ ±s)	Cyan-blue/purple( $\begin{matrix} \bar{x} \end{matrix}$ ±s)
Peace quality	L^*	55.91±1.46	64.02±4.26	49.13±2.07	42.67±5.46
	a^*	37.39±2.66	29.54±2.37	45.60±1.70	31.07±2.77
	b^*	18.93±2.45	14.06±2.06	21.51±2.05	8.56±2.26
Sputumwet quality	L^*	57.55±1.97	59.99±1.77	48.55±2.47	44.62±2.58
	a^*	36.47±2.01	27.61±2.79	44.00±2.99	29.92±3.37
	b^*	17.51±3.11	10.92±1.70	20.76±2.53	6.87±3.61
Wet heatquality	L^*	56.87±1.79	60.35±2.06	48.64±5.29	46.37±5.96
	a^*	35.90±2.35	25.20±3.83	42.85±3.85	30.21±2.63
	b^*	18.94±2.20	10.76±2.52	20.58±2.43	6.19±1.87
Yin deficiencyquality	L^*	56.01±1.36	61.51±2.16	49.75±2.89	46.16±3.48
	a^*	39.02±2.90	28.00±4.05	45.48±2.50	30.16±1.08
	b^*	18.44±2.11	12.28±2.23	21.98±2.18	7.39±1.48

Table 1. Relationship between tongue chroma value and physique

Tongue color	L^*	a^*	b^*
Light red	[50, 58]	[-2, 2]	[-1, 1]
Light white	[33, 44]	[14, 28]	[-9, 14]
Red	[68, 72]	[-26, -20]	[-21, -5]
Twilight	[69, 75]	[-25, -18]	[-16, -4]
Cyan-blue	[52, 60]	[61, 72]	[21, 50]
Purple	[73, 82]	[-19, -6]	[16, 34]

Table 2. Simulation parameter range of synthetic films

Tongue color	L^*	a^*	b^*
Light red	[50, 57]	[-2, 11]	[-8, 2]
Light white	[45, 49]	[3, 19]	[-18, -2]
Red	[59, 67]	[-3, 11]	[-17, -3]
Twilight	[62, 70]	[-3, 9]	[-15, -2]
Cyan-blue	[53, 59]	[3, 16]	[-16, 3]
Purple	[76, 83]	[-1, 11]	[-16, 4]

Table 3. Experimental parameter range of synthetic films

Tongue color	Internal organ	Fitting equation
Light red	Normal	q=-0.05753o²-0.1177op+6.785o-0.07655p²+7.28p-205
Light white	Kidney	q=0.04205o²+0.06796op-4.7o-0.006757p²-3.011p+118.2
Red	Heart	q=-0.009147o²+0.03776op+1.084o-0.009451p²-2.461p-41.55
Twilight	Stomach	q=-0.01078o²+0.01269op+1.287o+0.01275p²-1.112p-47.06
Cyan-blue	Lung	q=0.05644o²+0.09939op-7.252o-0.08967p²-3.703p+215.3
Purple	Heart	q=0.005532o²-0.007552op-1.026o+0.008415p²+0.5093p+39.53

Table 4. Summary of fitting equations for tongue image synthetic films

Tongue color	Simulation data	Experimental data
Light red	[47, 55]	[50, 55]
Light white	[33, 47]	[45, 50]
Red	[64, 70]	[59, 65]
Twilight	[70, 74]	[65, 73]
Cyan-blue	[55, 64]	[55, 59]
Purple	[74, 82]	[73, 83]

Table 5. Comparison of quantitative parameter L^* between simulation and experiment

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