[Retracted] Modeling of Hidden Markov in Ultrasound Image-Assisted Diagnosis

Table 1

Feature extraction of this study.

Feature category	Specific characteristics
Grayscale feature	Gray mean, gray variance, and gray entropy
Geometric features	Area, diameter, and perimeter
Shape feature	Long axis, short axis, linearity, eccentricity, convexity, and squareness
Texture feature	Energy, contrast, and inverse moment