code: func GetText(imgPath string, args ...string) (string, error) {
  	var lang = "eng"
  
  	if len(args) > 0 {
  		lang = args[0]
  		if lang == "zh" {
  			lang = "chi_sim"
  		}
  	}
  
  	client := gosseract.NewClient()
  	defer client.Close()
  
  	client.SetImage(imgPath)
  	client.SetLanguage(lang)
  	return client.Text()
  }
docs: // GetText get the image text by tesseract ocr