QMap - 图像分割

 将一图像按一定的规律分成许多小图像有时很有用。特别是针对许多超大图像，处理起来效率低，所以，图像分割还是有必要的。本单元在分割时提供了按行列或按宽高两种方式，并可设置左右上下边距。分割后的子图像取名方式也可选择，有利于管理、合并和恢复。分割的主要用途为打印，广告发布。

现按软件功能界面介绍如下：

1. 选择主图像名
    在图像上点击鼠标右键，选择为主图像，图像名显示在对应编辑框内。去掉主图像名的后缀作为子图像名，分割后的所有子图像均以此名开始，附加有规则的字符串，构成完整的图像名。默认的子图像名可以在编辑框中修改。

2. 按行列或宽高分割图像
    默认时按2行2列分割图像。通过选择圆形按钮切换分割方式。

3. 边距与缩进
    “边距与缩进”是指在主图像上的边框周围留出一段边距，然后再进行分割图像。默认状态下，“边距与缩进”值均为0。

4. 子图像命名方式
    完整的子图像名由三部分组成：
    1) 子图像名：从主图像文件名去除后缀名得到，也可自定义名称。
    2) 坐标特征表达字符串： 指明子图像在主图像中的坐标位置。确定是（X，Y）还是（Y，X）坐标方式，默认为“（Y，X）坐标表达方式”。再确定坐标的含义是子图像在主图像里的位置还是序号值，默认为“序号作为文件名一部分”。
    3) 坐标的具体值： 对应“坐标特征表达字符串”的含义，给出每一幅子图像的数值。

5. 子图像命名方式举例
    a) 有4幅子图像名，如：24__SYX__0__0.jpg，24__SYX__0__1.jpg，24__SYX__1__0.jpg，24__SYX__1__1.jpg。
    可知这些是由主图像名为24.jpg分割得到的图像。“S”代表坐标是序号，“YX”代表坐标按（Y，X）存放，最后两个值如“1__0”代表子图像在主图像中的序号坐标值为X=0, Y=1。
    
    b) 有4幅子图像名，如： 24__LXY__0__0.jpg，24__LXY__0__1327.jpg，24__LXY__1224__0.jpg，24__LXY__1224__1327.jpg。
    可知这是由主图像名为24.jpg分割得到的图像。“L”代表坐标表达的是坐标位置，“XY”代表坐标按（X，Y）存放，最后两个值如“1224__1327”代表子图像在主图像中的位置，左上角坐标值为X=1224, Y=1327。

6. 处理
    点击“处理”按钮，选择子图像存放文件夹，开始处理。







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