图像目标提取是图像语义抽取及其应用的基础。

Extraction of object in an image is a precondition for semantic image retrieval.

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针对PTF计划，该组织将对每夜捕获的3000万个目标图像进行处理和提取。

For the Palomar Transient Factory project, the group will process and extract images of up to 30 million objects captured each night.

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当武士的激光剑击中目标时，从这个背景中提取出形状不规则的小洞，叠加在演员的图像上，效果就像是他被刺穿了。

Small irregular-shaped holes extracted from this background would then overlay the player's image when the opponent's laser beam struck their targets.

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