Abstract:
An optical proximity sensor (1) generates information indicative of a distance (D1) to an object (14A) in a field and in some embodiments also generates information indicative of a spectral reflectance characteristics of the object (14A). The information indicative of the spectral reflectance characteristic can be used to determine whether the object (14A) in the field is a living plant (14A) or another object such as soil (10). Light emitted from the optical sensor (1) for reflection off the object (14A) is modulated so that reflected light from the optical sensor can be discriminated from reflected ambient sunlight. The optical sensor (1) is scanned over the field to map objects in the field and/or to determine the location of rows of crop plants. A sensor in accordance with the present invention has many uses in agriculture including spraying, cultivation and vehicle guidance.
Abstract:
A color meter including: a plurality of light sources (30, 32, 34) which generate a plurality of preselected, respective, bandwidths of light; a control unit (26) operative for activating said light sources (30, 32, 34) in accordance with a preselected sequence; an optical medium (18) associated with said light sources (30, 32, 34) which carries light generated by said light sources (30, 32, 34) along a preselected projection path onto a preselected sample region (12), and carries light reflected from said sample region (12) along a reflection path which at least partially overlaps said projection path; and an optical sensor (28) associated with said optical medium (18) which provides an output responsive to the intensity of light reflected from said sample region (12).
Abstract:
A lighting device 10 that emits illumination light from two or more angular directions onto a sample surface 2 to be measured, an imaging optical lens 8, and a monochrome two-dimensional image sensor 4 are provided. This configuration provides a method and an apparatus that take a two-dimensional image of the sample surface 2 to be measured at each measurement wavelength and accurately measure multi-angle and spectral information on each of all pixels in the two-dimensional image in a short time. In particular, a multi-angle spectral imaging measurement method and apparatus that have improved accuracy and usefulness are provided.
Abstract:
PROBLEM TO BE SOLVED: To achieve a gonio-photometric spectral imaging measurement method that is more accurate and highly practicable, and an apparatus for the same.SOLUTION: To a measurement sample surface 2, an illumination device 10 that irradiates the measurement sample surface 2 with illumination light beams from two or more angle directions, an optical lens 8 for image formation, and a black and white two-dimensional image sensor 4 are provided. Accordingly, a method and an apparatus are provided for photographing a two-dimensional image of the measurement sample surface 2 for each measurement wavelength, and measuring a deflection angle and spectral information for each pixel accurately in a short time for the entire pixels of the two-dimensional image. In particular, a gonio-photometric spectral imaging measurement method that is more accurate and highly practicable, and an apparatus for the same are achieved.
Abstract:
An image processing system is used for dentistry. Upon creating a false tooth of a patient (59), a plurality of illuminating light of LEDs with different wavelengths emit light and a photographing apparatus (1A) photographs a tooth portion of the patient (59), thereby obtaining image data. The image data is sent to a dentistry filing system (2A) serving as a processing apparatus, and color reproducing data is obtained by calculation. The color reproducing data is sent to a dentistry factory (55) via a public line. Data is searched from a database (56) for calculating a ceramic compounding ratio, compound data of the ceramic false tooth is obtained, matching the color of the tooth portion of the patient (59), and the false tooth approximate to the tooth color of the patient (59) is created. The photographing apparatus has a control unit (18) which switches between a spectroscopic image capturing mode and a moving image capturing mode.