%% import pictures, and save into images{img_num}
function [images, img_num, vertical_border] = import_data(file_path)
% 批量读取图片
img_path_list = dir(strcat(file_path,'*.jpg'));%获取该文件夹中所有jpg格式的图像
img_num = length(img_path_list);%获取图像总数量
images = cell(1, img_num);
if img_num > 0 %有满足条件的图像
for i = 1:img_num %逐一读取图像
image_name = img_path_list(i).name;% 图像名
images{i} = im2bw(imread(strcat(file_path, image_name)));
vertical_border{i} = [images{i}(:, 1), images{i}(:, end)];
% fprintf(' %d %s\n',i,strcat(file_path,image_name));% 显示正在处理的图像名
end
end
end