def get_img_name_strs
         result_arr = []
         @images.each {|item|
            item_name = Image.get_image_name(File.basename(item.name, ".*"))
            result_arr << item_name
         }
         return result_arr
      end
def get_img_name_strs
         result_arr = []
         @images.each {|item|
            item_name = Image.get_image_name(File.basename(item.name, ".*"))
            result_arr << item_name
         }
         return result_arr
      end
得到所有图片名称字符