cv

func BoldRect(img *image.RGBA, x1, y1, x2, y2 int, col color.Color, bold int)

func DrawText(img draw.Image, str string, x, y int, color color.Color, fontSize float64, font *truetype.Font) error

func HLine(img *image.RGBA, x1, y, x2 int, col color.Color)

func LoadFont(filePath string) (*truetype.Font, error)

func Rect(img *image.RGBA, x1, y1, x2, y2 int, col color.Color)

func VLine(img *image.RGBA, x, y1, y2 int, col color.Color)