考虑绘制跟踪高度等于云顶的特定图层边缘的多边形。

Consider drawing polygons tracing the edge of certain layers with heights equal to the cloud tops.

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在乐谱区域中使用MediaPanZoom聚焦于乐谱边缘的注解，并随播放跟踪标记。

Use MediaPanZoom in the score region to focus on annotations made in the margin of the score and to follow the notation as it is played.

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采用图像边缘检测和图像跟踪算法对获得的关节数字图像进行了图像处理和分析。

Edge detection and tracking algorithm for image are used to process and analyze the acquired digital image of arthrosis.

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