The purpose of image drawing is to extract objects of interest from background in a digital image.

景象提取的目的是将数字图像中的景物从背景中分离出来。

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In the drawing process, through texture mapping for the system to add background image to create the image of the smoke even more to achieve human-computer interaction.

并在绘制过程中，通过纹理贴图为系统添加背景图片使产生的烟雾更加形象逼真，实现人机交互功能。

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In the drawing process, through texture mapping for the system to add background image to create the image of the smoke even more to achieve human-computer interaction.

并在绘制过程中，通过纹理贴图为系统添加背景图片使产生的烟雾更加形象逼真，实现人机交互功能。

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