Logarithmic polar coordinate transforming method, vision recognizing method, and optical information processing apparatus

Claim 2

A vision recognizing method comprising the steps of: storing information (f) of an input image; generating first complex amplitude information (f * A * T) based on the information (f) of the input image, phase information (A), and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; Fourier-transforming the first complex amplitude information (f * A * T) to generate an image, transformed in logarithmic polar coordinate, of the input image; generating second complex amplitude information (f * A * T * h * A * T) obtained by multiplying the information (f * A * T), of the Fourier-transformed image generated as a result of the transformation of the input image in logarithmic polar coordinate, by information (h) of a reference pattern, the phase information (A), and the amplitude information (T); and Fourier-transforming the second complex amplitude information (f * A * T * h * A * T).

Claim 3

A vision recognizing method comprising the steps of: storing information (f) of an input image; generating complex amplitude information (f * A * T * h * A * T) based on the information (f) of the input image, information (h) of a reference pattern, phase information (A), and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; and Fourier-transforming the complex amplitude information (f * A * T * h * A * T).

Claim 4

A vision recognizing method comprising the steps of: storing Fourier-transformed information (F) of an input image; generating complex amplitude information (F * A T * h * A * T) based on the information (F) of the input image, Fourier-transformed information (H) of a reference pattern, phase information (A), and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; and Fourier-transforming the complex amplitude information (F * A * T * h * A * T).

Claim 5

A vision recognizing method comprising the steps of: storing Fourier-transformed information (F) of an input image; generating first complex amplitude information (F * A * T) based on the information (F) of the Fourier-transformed input image, phase information (A), amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; Fourier-transforming the first complex amplitude information (F * A * T) to generate an image obtained by transforming the Fourier-transformed input image in logarithmic polar coordinate; generating second complex amplitude information (F * A * T * h * A * T) obtained by multiplying the information (F * A * T), of an image obtained by Fourier-transforming the image generated as a result of the transformation of the input image in logarithmic polar coordinate, by Fourier-transformed information (H) of a reference pattern, the phase information (A), and the amplitude information (T); and Fourier-transforming the second complex amplitude information (F * A * T * h * A * T).

Claim 6

An optical information processing apparatus comprising: a first light source (3); a first spatial light modulating element (2), irradiated by a beam emitted from the first light source (3), for displaying information (f) of an input image; a second spatial light modulating element (6), irradiated by a beam emitted from the light source (3), for displaying phase information (A) in the form of a computer-generated hologram; an optical element (5), irradiated by a beam emitted from the first light source (3), generated based on amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a first lens (7) in which an element of the three elements (2, 6, 5) longest in an optical path length with respect to the first light source (3) is positioned at a first focal plane thereof; and a first photoelectric converting device (8) arranged at a second focal plane of the first lens (7).

Claim 7

An optical information processing apparatus comprising: a first spatial light modulating element (2); a second spatial light modulating element (6) for displaying phase information (A) in the form of a computer-generated hologram; a first light source (3) for irradiating the first and second spatial optical light elements (2, 6); a first lens (7) in which an element of the two elements (2, 6) longest in an optical path length with respect to the first light source (3) is positioned at a first focal plane thereof; a first photoelectric converting device (8) arranged at a second focal plane of the first lens (7); and signal converting means (10) for converting an image to be inputted to the first spatial light modulating element (2) and displaying, on the first spatial light modulating element, information (T * f) obtained by multiplying amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate, by information (f) of an input image.

Claim 8

An optical information processing apparatus comprising: a first spatial light modulating element (2) for displaying information (f) of an input image; a second spatial light modulating element (6) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a first light source (3) for irradiating the first and second spatial light modulating elements (2, 6); a first lens (7) in which an element of the two elements (2, 6) longest in an optical path length with respect to the first light source (3) is positioned at a first focal plane thereof; and a first photoelectric converting device (8) arranged at a second focal plane of the first lens (7).

Claim 9

An optical information processing apparatus comprising: a first spatial light modulating element (202) for displaying an input image; a first light source (203) for irradiating the first spatial light modulating element (202); a first lens (207) having a first focal plane thereof at a plane on which the first spatial light modulating element (202) is positioned; a second spatial light modulating element (206) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a second lens (210) having a first focal plane thereof at a plane on which the second spatial light modulating element (206) is positioned; and a first photoelectric converting device (208) arranged at a second focal plane of the second lens (210).

Claim 10

An optical information processing apparatus comprising: a first spatial light modulating element for displaying information (f) of an input image; a first light source for irradiating the first spatial light modulating element; a first lens having a first focal plane thereof at a plane on which the first spatial light modulating element is positioned; a coordinate transforming means comprising a second spatial light modulating element and an optical element, the second spatial light modulating element being positioned on a second focal plane of the first lens, for displaying phase information (A) in the form of a computer-generated hologram, the optical element being formed based on amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a second lens having a first focal plane thereof at a plane on which the coordinate transforming section is positioned; and a first photoelectric converting device arranged at a second focal plane of the second lens.

Claim 11

The optical information processing apparatus as claimed in any one of claims 6-10, further comprising a signal converting device (500) for receiving a signal outputted from the first photoelectric converting device and outputting the signal, and an optical correlator comprising: a third spatial light modulating element (302) for receiving the signal from the signal converting device (500) and displaying an input image; a second light source (303) for irradiating the third spatial light modulating element (302); a second lens (307) having a first focal plane thereof at a plane on which the third spatial light modulating element (303) is positioned; a fourth spatial light modulating element (306) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a third lens (310) having a first focal plane thereof at a plane on which the fourth spatial light modulating element (306) is positioned; and a second photoelectric converting device (308) arranged at a second focal plane of the third lens (310).

Claim 12

An optical information processing apparatus comprising: a first light source (3); a first spatial light modulating element (2), irradiated by a beam emitted from the first light source (3), for displaying information (f) of an input image; a second spatial light modulating element (6), irradiated by a beam emitted from the light source (3), for displaying phase information (A) in the form of a computer-generated hologram; an optical element (5), irradiated by a beam emitted from the first light source (3), generated based on amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a first lens (7) in which an element of the three elements (2, 6, 5) longest in an optical path length with respect to the first light source (3) is positioned at a first focal plane thereof; and an optical correlator comprising: a second lens (307) having a first focal plane thereof at a plane on which the second focal plane of the first lens is positioned; a third spatial light modulating element (306) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a third lens (310) having a first focal plane thereof at a plane on which the fourth spatial light modulating element (306) is positioned; and a second photoelectric converting device (308) arranged at a second focal plane of the third lens (310).

Claim 13

An optical information processing apparatus comprising: a first spatial light modulating element (2); a second spatial light modulating element (6) for displaying phase information (A) in the form of a computer-generated hologram; a first light source (3) for irradiating the first and second spatial optical light elements (2, 6); a lens (7) in which an element of the two elements (2, 6) longest in an optical path length with respect to the first light source (3) is positioned at a first focal plane thereof; a first photoelectric converting device (8) arranged at a second focal plane of the first lens (7); signal converting means (10) for converting an image to be inputted to the first spatial light modulating element (2) and displaying, on the first spatial light modulating element, information (T * f) obtained by multiplying amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate, by information (f) of an input image; and an optical correlator comprising: a second lens (307) having a first focal plane thereof at a plane on which the second focal plane of the first lens is positioned; a third spatial light modulating element (306) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a third lens (310) having a first focal plane thereof at a plane on which the fourth spatial light modulating element (306) is positioned; and a second photoelectric converting device (308) arranged at a second focal plane of the third lens (310).

Claim 14

An optical information processing apparatus comprising: a first spatial light modulating element (2) for displaying information (f) of an input image; a second spatial light modulating element (6) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a first light source (3) for irradiating the first and second spatial light modulating elements (2, 6); a first lens (7) in which an element of the two elements (2, 6) longest in an optical path length with respect to the first light source (3) is positioned at a first focal plane thereof; and an optical correlator comprising: a second lens (307) having a first focal plane thereof at a plane on which the second focal plane of the first lens is positioned; a third spatial light modulating element (306) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a third lens (310) having a first focal plane thereof at a plane on which the fourth spatial light modulating element (306) is positioned; and a second photoelectric converting device (308) arranged at a second focal plane of the third lens (310).

Claim 15

An optical information processing apparatus comprising: a first spatial light modulating element (202) for displaying an input image; a first light source (203) for irradiating the first spatial light modulating element (202); a first lens (207) having a first focal plane thereof at a plane on which the first spatial light modulating element (202) is positioned; a second spatial light modulating element (206) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a second lens (210) having a second focal plane thereof at a plane on which the second spatial light modulating element (206) is positioned; and an optical correlator comprising: a second lens (307) having a first focal plane thereof at a plane on which the second focal plane of the first lens is positioned; a third spatial light modulating element (306) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a third lens (310) having a first focal plane thereof at a plane on which the fourth spatial light modulating element (306) is positioned; and a second photoelectric converting device (308) arranged at a second focal plane of the third lens (310).

Claim 16

An optical information processing apparatus comprising: a first spatial light modulating element for displaying information (f) of an input image; a first light source for irradiating the first spatial light modulating element; a first lens having a first focal plane thereof at a plane on which the first spatial light modulating element is positioned; a coordinate transforming means comprising a second spatial light modulating element and an optical element, the second spatial light modulating element being positioned on a second focal plane of the first lens, for displaying phase information (A) in the form of a computer-generated hologram, the optical element being formed based on amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a second lens having a first focal plane thereof at a plane on which the coordinate transforming section is positioned; and an optical correlator comprising: a second lens (307) having a first focal plane thereof at a plane on which the second focal plane of the first lens is positioned; a third spatial light modulating element (306) for displaying, in the form of a computer-generated hologram, information based on phase information (A) and amplitude information (T), an amplitude of which changes according to distance between each point composing the amplitude information (T) and origin of logarithmic polar coordinate; a third lens (310) having a first focal plane thereof at a plane on which the fourth spatial light modulating element (306) is positioned; and a second photoelectric converting device (308) arranged at a second focal plane of the third lens (310).

Claim 17

The optical information processing apparatus as claimed in any one of claims 6-10, wherein at least one of the first spatial light modulating element and second spatial light modulating element is composed of a liquid crystal display.