Objective assessment of blood stasis using computerized inspection of sublingual veins

Hyperspectral Imaging Technology Used in Tongue Diagnosis

“…These veins travel naturally without meandering, distending or exhibiting any varicosity. The sublingual veins are sensitive indicators of the blood stasis and show the activity of the blood circulation (Chiu et al, 2002). Inspection of sublingual veins can provide valuable insights into the healthy status of human body (Yan et al, 2009).…”

“…This is a prior research on colour of sublingual veins. Then, Chiu et al (Chiu et al, 2002) developed a computerized inspection system and presented a method to extract the chromatic and geometrical properties of sublingual veins quantitatively. Their system is also a colour based method that can extract the length, width, area, and colour information from the sublingual veins.…”

“…G. Wang, Yang, & Zhou, 2007;Zhang, Wang, & Jin, 2005), tongue shape (Z. Liu, Jing-Qi, Tao, & Qun-Lin, 2006;Xu, Tu, Ren, & Zhang, 2008), sublingual veins (Chiu, Lan, & Chang, 2002;Yan, Wang, & Li, 2009;Yan, Yu, Wang, & Li, 2008), tongue fissures and cracks (L. L. L. L. Liu, Zhang, Kumar, & Wu, 2008;Yue Zhou, Li Shen, & Jie Yang, 2002), tongue coating (Kim et al, 2008;Wu, Zhang, Li, Wang, & Yang, 2008), etc.…”

Sublingual vein extraction algorithm based on hyperspectral tongue imaging technology

“…Therefore, the examination of the tongue is one of the most important approaches in obtaining significant evidence when diagnosing a patient's health condition. So far, most inspections of the tongue have been focused on shape, color, texture, coating, and cracks [2][3][4]. Aside from these various features, the sublingual vein is another important clinical part of the tongue.…”

“…This is a prior research on color of sublingual veins. Then, Chiu et al [4] developed a computerized inspection system and presented a method to extract the chromatic and geometrical properties of sublingual veins quantitatively. Their system is also a color based method that can extract the length, width, area, and color information from the sublingual veins.…”