Patent attributes
A multi-frequency high-precision object recognition method is disclosed, wherein a multi-frequency light emitting unit is used to emits lights of different frequencies onto an object-to-be-tested, and a multi-frequency image sensor unit is used to fetch the image of lights reflected from the object-to-be-tested. In an X axis and a Y axis is a single-piece planar image, while lights of different frequencies is used to form image depth in a Z axis. The sample light in the Z axis includes two infrared light narrow range image signals, each having wavelength between 850 nm and 1050 nm, and wavelength width between 10 nm and 60 nm. Calculate to obtain a plurality of single-piece planar images in the X axis and the Y axis as sampled by different wavelength widths in the Z axis, superimpose the plurality of single-piece planar images into a 3-dimension stereoscopic relief image for precise comparison and recognition.
