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An image-processing technique is then employed to isolate the laser nozzle and melt pool in the captured images .
 enabling technology: laser; material: melt pool; concept or principle: images
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: laser, melt pool, images 
Answer:
 enabling technology: laser; material: melt pool; concept or principle: images