Aiming at the characteristic in feature extraction of cold steel strip surface defect images, a mixed feature extraction method of separable criterion based on class distance is proposed.
针对冷轧带钢表面缺陷图像特征提取的特点，提出了基于类距离可分离性判据的混合特征提取方法。
2
The optimum condition of the separation enrichment by column chromatography with activated charcoal and sodium sulfite strip and extraction of trace gold with TMK-isoamyl alcohol has been studied.
本文叙述了用活性炭色层柱分离、亚硫酸钠解吸、TMK -异戊醇萃取比色测定痕量金的方法。
3
The paper compares the laser light strip geometric center extraction process method and the skeleton method, and adopts the skeleton method whose thinning precision is much higher.