Table 4. HSV color space recognition.

Tongue category	Total number of detections	Correct identification number	Detection rate
Red Tongue	10	9	90.00%
Yellow Tongue	9	7	77.78%
Purple Tongue	11	9	81.82%
White Tongue	6	4	66.67%
Light Red Tongue	12	12	100.00%
Total	48	41	85.42%