Method and system for video processing to remove noise from a digital video sequence containing a modulated light signal
First Claim
1. A method comprising:
- electronically receiving, by an image sensor of a device, a digital video sequence of a scene, wherein;
the digital video sequence comprises a sequence of frames;
the scene comprises both modulated illumination broadcast by a beacon light source and un-modulated illumination; and
each frame of the sequence of frames comprises a plurality of pixel values, each of the plurality of pixel values having a given point in the frame;
calculating noise from the digital video sequence, wherein the noise comprises information within the digital video sequence corresponding to the un-modulated illumination of the scene;
removing the calculated noise from the digital video sequence to obtain an isolated digital video sequence of the modulated illumination of the scene; and
demodulating the emitted light signal from the isolated digital video sequence.
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Abstract
In one aspect, the present disclosure relates to a method for removing noise from a digital video sequence containing a modulated light signal emitted from a beacon light source. In some embodiments, the method includes electronically receiving, by an image sensor of a device, a digital video sequence of a scene, calculating noise from the digital video sequence, wherein the noise comprises information within the digital video sequence corresponding to the un-modulated illumination of the scene, reducing the noise from the digital video sequence to obtain an isolated digital video sequence of the modulated illumination of the scene, and demodulating the emitted light signal from the isolated digital video sequence.
148 Citations
16 Claims
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1. A method comprising:
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electronically receiving, by an image sensor of a device, a digital video sequence of a scene, wherein; the digital video sequence comprises a sequence of frames; the scene comprises both modulated illumination broadcast by a beacon light source and un-modulated illumination; and each frame of the sequence of frames comprises a plurality of pixel values, each of the plurality of pixel values having a given point in the frame; calculating noise from the digital video sequence, wherein the noise comprises information within the digital video sequence corresponding to the un-modulated illumination of the scene; removing the calculated noise from the digital video sequence to obtain an isolated digital video sequence of the modulated illumination of the scene; and demodulating the emitted light signal from the isolated digital video sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image detection apparatus, comprising:
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an imaging sensor; and a processor in communication with the imaging sensor configured to; electronically receive a digital video sequence of a scene, wherein; the digital video sequence comprises a sequence of frames; the scene comprises both modulated illumination broadcast by a beacon light source and un-modulated illumination; and each frame of the sequence of frames comprises a plurality of pixel values, each of the plurality of pixel values having a given point in the frame; calculate noise from the digital video sequence, wherein the noise comprises information within the digital video sequence corresponding to the un-modulated illumination of the scene; remove the calculated noise from the digital video sequence to obtain an isolated digital video sequence of the modulated illumination of the scene; and demodulate the emitted light signal from the isolated digital video sequence. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification