SENSOR-SYNCHRONIZED SPECTRALLY-STRUCTURED-LIGHT IMAGING

摘要

An image capture device, such as a smartphone or point of sale scanner, is adapted for use as an imaging spectrometer, by synchronized pulsing of different LED light sources as different image frames are captured by the image sensor. A particular implementation employs the CIE color matching functions, and/or their orthogonally transformed functions, to enable direct chromaticity capture. These and various other configurations of spectral capture devices are employed to capture spectral images comprised of spectral vectors having multi-dimensions per pixel. These spectral images are processed for use in object identification, classification, and a variety of other applications. Particular applications include produce (e.g., fruit or vegetable) identification. A great variety of other features and arrangements are also detailed.

主权项

1. An apparatus comprising:
an imaging apparatus for obtaining pixels sampled from a scene, the pixels each comprising an N-D spectral vector; a digital signal processing device in communication with the imaging apparatus for computing a spatial relationship function of pixels of the N-D spectral vector, sampled from different locations of the object; and a classifier for classifying the object based on the N-D spectral vector and output of the spatial relationship function to ascertain class of the object in the scene.