4 結論

　　通過攝像機直接拍攝型坯輪廓圖像，運用數字圖像處理技術對采集到的圖像進行處理和分析，實時提取目標的幾何特征，即型坯的直徑分布，可實現(xiàn)型坯直徑的實時在線檢測。但其測量精度會受一些條件的影響，如圖像采集設備的分辨率、光線環(huán)境及干擾等。本文針對型坯直徑分布的在線檢測問題進行了討論，它將為實現(xiàn)擠出吹塑成型加工過程質量的實時監(jiān)控和閉環(huán)控制提供可能。

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