Extraction of characteristics from an image by analysis with multiple spatial resolutions

摘要: By analogy to the mammalian visual system, a scheme is presented for image characteristic extraction from several channels of analysis with spatial frequencies. The significant contours on scales are integrated form connected sketch. Frequency bands generated by bias Gaussian filter obtain multiresolution pyramid. A top-down adopted generate final After choice vigilance index (number layers pyramid used analysis), information higher level check processing at underlying level. controls nature be extracted. Integration this contour detector into system automatic inspection printed circuit boards shows that small makes it possible verify state components, their identification and connection, whereas large leads sketch suitable recognition components verification correct positioning board.