Scene descriptor generation system and method
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsArnaud Verdant, William Guicquero
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Abstract
The present invention relates to a scene descriptor generation system, including an image sensor including a plurality of pixels, successively supplying S binary image planes, each including a single binary value per pixel; and a processing circuit configured to, for each binary image plane supplied by the sensor (100), to implement the successive steps of: a) calculating N convolutions of the binary image plane with respectively N distinct convolution kernels, to provide N convolved images; b) generating at least one meta-image from the N convolved images supplied at step a); and c) for each of the N convolved images supplied at step a), generating a binary descriptor from said convolved image and from said at least one meta-image.
Claims12
A scene descriptor generation system, comprising:
- an image sensor comprising a plurality of pixels, the sensor being configured to, during an acquisition phase, select successively each pixel a number S of times without resetting a readout node of the pixel between the first and the last selection, and, at each selection of the pixel, compare an output signal of the pixel to a quantization threshold and provide a binary value representative of the result of the comparison, so as to successively supply S binary image planes, each comprising a single binary value per pixel, S being an integer greater than or equal to 2;
- and
- a processing circuit configured to, for each binary image plane supplied by the sensor, implement the successive steps of:
- a) calculating N convolutions of the binary image plane with respectively N distinct convolution kernels, to provide N convolved images, N being an integer greater than or equal to 2;
- b) generating at least one meta-image from the N convolved images supplied at step a);
- and
- c) for each of the N convolved images supplied at step a), generating a binary descriptor from said convolved image and from said at least one meta-image, the processing circuit being further configured to, after the acquisition phase, implement a step of analyzing the N*S generated binary descriptors.
A method of generation, by means of a processing circuit, of descriptors of a scene captured by an image sensor comprising a plurality of pixels, the sensor being configured to, during an acquisition phase, select successively each pixel a number S of times without resetting a readout node of the pixel between the first and the last selection, and, at each selection of the pixel, compare an output signal of the pixel to a quantization threshold and provide a binary value representative of the result of the comparison, so as to successively supply S binary image planes, each comprising a single binary value per pixel, S being an integer greater than or equal to 2, the method comprising the successive steps of:
- a) calculating N convolutions of the binary image plane with respectively N distinct convolution kernels, to supply N convolved images, N being an integer greater than or equal to 2;
- b) generating at least one meta-image from the N convolved images supplied at step a);
- and
- c) for each of the N convolved images supplied at step a), generating a binary descriptor from said convolved image and from said at least one meta-image, the processing circuit being further configured to, after the acquisition phase, implement a step of analyzing the N*S generated binary descriptors.
Dependencies are inferred from the claim text.