Method and device for suppressing electromagnetic background radiation in an image
First Claim
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1. A method for suppressing electromagnetic background radiation in a defined spectral range relative to a signal to be detected, comprising:
- recording electromagnetic radiation of;
at least one uni-dimensional or multidimensional P-image in the defined spectral range (P), andat least one uni-dimensional or multidimensional N-image in at least one further defined spectral range differing from that of the at least one uni-dimensional or multidimensional P-image; and
performing signal and information processing on the at least one uni-dimensional or multidimensional P-image and on the at least one uni-dimensional or multidimensional N-image,wherein an image brightness Ssp of the background radiation in the P-image is deduced on the basis of a physical model of the spectral distribution of the background radiation or a spectral curve which is directly measured,the signal to be detected is extracted based on the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image,the spectral ranges of the at least one uni-dimensional or multidimensional P-image and of the at least one uni-dimensional or multidimensional N-image are determined as a two-band neighbourhood method by a choice of a wavelength band in each case for the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image,the wavelength band of the at least one uni-dimensional or multidimensional N-image is either on a short-wave or on a long wave side of the wavelength band of the at least one uni-dimensional or multidimensional P image,wherein the number of dimensions of the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image are the same.
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Abstract
A method for suppressing electromagnetic background radiation in the image according to a precharacterization, a device for carrying out the method according to a precharacterization, a measuring instrument, and a use of the device for identifying a laser signal as a mark for subsequent measuring processes as well as for identifying a source of a laser signal.
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Citations
11 Claims
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1. A method for suppressing electromagnetic background radiation in a defined spectral range relative to a signal to be detected, comprising:
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recording electromagnetic radiation of; at least one uni-dimensional or multidimensional P-image in the defined spectral range (P), and at least one uni-dimensional or multidimensional N-image in at least one further defined spectral range differing from that of the at least one uni-dimensional or multidimensional P-image; and performing signal and information processing on the at least one uni-dimensional or multidimensional P-image and on the at least one uni-dimensional or multidimensional N-image, wherein an image brightness Ssp of the background radiation in the P-image is deduced on the basis of a physical model of the spectral distribution of the background radiation or a spectral curve which is directly measured, the signal to be detected is extracted based on the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image, the spectral ranges of the at least one uni-dimensional or multidimensional P-image and of the at least one uni-dimensional or multidimensional N-image are determined as a two-band neighbourhood method by a choice of a wavelength band in each case for the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image, the wavelength band of the at least one uni-dimensional or multidimensional N-image is either on a short-wave or on a long wave side of the wavelength band of the at least one uni-dimensional or multidimensional P image, wherein the number of dimensions of the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image are the same. - View Dependent Claims (3, 4, 5)
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2. A method for suppressing electromagnetic background radiation in a defined spectral range relative to a signal to be detected, comprising:
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recording electromagnetic radiation of at least one uni-dimensional or multidimensional P-image in the defined spectral range, and at least one uni-dimensional or multi-dimensional N-image in at least one further defined spectral range differing from that of the at least one uni-dimensional or multidimensional P-image being recorded during the recording electromagnetic radiation, performing signal and information processing on the at least one uni-dimensional or multidimensional P-image and on the at least one uni-dimensional or multidimensional N-image, wherein an image brightness Ssp of the background radiation in the at least one uni-dimensional or multidimensional P-image is deduced on the basis of a physical model of the spectral distribution of the background radiation or a spectral curve which is directly measured, the signal to be detected is extracted based on the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image, the spectral ranges of the at least one uni-dimensional or multidimensional P-image and of the at least one uni-dimensional or multidimensional N-image are determined by a choice of at least one wavelength band in each case for the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image, the wavelength bands each sense different lines, wherein the number of dimensions of the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image are the same.
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6. A device for suppressing electromagnetic background radiation in a defined spectral range relative to a signal to be detected, comprising means for recording electromagnetic radiation, comprising:
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means for recording electromagnetic radiation, the means for recording electromagnetic radiation being designed for recording of at least one uni-dimensional or multidimensional P-image and at least one uni-dimensional or multidimensional N-image; and means for signal and information processing, the means for signal and information processing being designed so that electromagnetic background radiation can be suppressed from the different content of the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image adjusted by the means for signal and information processing, wherein the means for recording electromagnetic radiation have at least two detectors for recording images in at least two different, defined spectral ranges, the means for signal and information processing are designed so that the electromagnetic background radiation can be suppressed on the basis of a physical model of the spectral distribution of the background radiation or a spectral curve which is directly measured, wherein the number of dimensions of the at least one uni-dimensional or multidimensional P-image and the at least one uni-dimensional or multidimensional N-image are the same. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification