QMap - 摄像头检测

摄像头检测提供了对各种常用摄像头的实时观测，添加时间与文字，对批处理方案的实时处理观测，自动间隔时间拍照，手动拍照，以及视频录制等功能。在各种动态观测、记录、分析方面提供了有效的手段。

现按软件功能界面介绍如下：

1. 打开摄像头  
    启动对话框时，会自动检测计算机连接的一个或多个摄像头，列在下拉框内。点击“打开”按钮，显示选中的摄像头视频。有多个摄像头时可切换。

2. 添加时间和文字
    默认时添加时间，在设定的坐标处，按指定的字体显示，点击“字体”按钮可改变时间与文字的字体。
    改变坐标值，可改变时间和文字在视频里的显示位置。
    选中添加文字，可输入任意说明，支持换行。

3. 按F1键或点击“全屏切换”按钮，支持全屏显示和还原。

4. 添加方案检测
    方案是指由线性、非线性、样本点比较、样本点均值比较等信息提取分析而得到的方案文件，组合这些文件，进行视频检测，可达到实时监测和动态分析的目的。默认时未选择。

5. 添加其他处理
    默认时未选择。选择时有两项边缘实时监测样例。

6. 自动间隔拍照与手动拍照
    自动拍照： 选择间隔时间分与秒，加上图像名前缀（可选，如 AA），与当前时间配合，得到图像名，如AA_20220928_082858.jpg。
    手动拍照： 当选择“显示一张照片”时，点击“拍照”新建一幅图像。不选时，连续循环新建5幅图像，需要时保存。

7. 视频录制
    可将当前摄像头中的视频，通过“暂停”按钮分段录制，而且“视频编码”方式可选择。

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