A Noncontact Method for Locating Radial Artery above Radial Styloid Process in Thermal Image
Algorithm 2
Algorithm of locating y coordinate of GUAN.
( 1)
Establish and calculate its mean value and standard deviation .
(2)
If the , where is the mean gray value of border between the radial artery and other tissues and is the standard deviation of radial artery region, . is used to compose the image of the partial radial artery .
(3)
Obtain mean values of y values in each column of and fit an equation.
