探讨了基于DEM的VLL物方影像匹配方法、多尺度表达的数字高程模型，以及自适应窗口大小和变化阈值的确定等用于三维变化检测的关键技术。
And many key techniques such as VLL matching, multi-scale DEM, self-adapted matching window and thresholds for the framework are discussed and investigated deeply.
针对复杂天空背景下弱点目标的检测与跟踪，提出了一种利用多窗口、小尺度、多次差影融合点目标图像的快速检测与跟踪方法。
In order to detect and track dim-point targets under the complex background of sky, a high speed method is put, which uses multiwindow, little yardstick, repetitious subtracting and fusing images.
出于算法运行速度和准确性的考虑，着重研究了QRS波检测的两种算法：一阶微分窗口积分法和小波时间-尺度检测法。
On account of the operation speed and accuracy, we researched two algorithms used in QRS detection: derivative-window method and wavelet-based method.
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