PATENT CLAIM ANALYSIS

Application Number: 15949015
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["348", "047000"]

Abstract:
A method for estimating the speed a first video camera when it captures a current image of a three-dimensional scene, the current image including pixels. The method includes storing a reference image corresponding to an image of the same scene captured by a second video camera in a different pose, the reference image including pixels. The method also includes storing the current image, containing for each pixel of the current image the measurement of a physical magnitude measured by that pixel, which is the same as the physical magnitude measured by the pixels of the reference image. The method further includes storing for each pixel of the reference image or of the current image the measurement of a depth that separates that pixel from the point of the scene photographed by that pixel, estimating the pose and speed of the first video camera.

Claim (Index 14):
A system for estimating the speed of movement of a first video camera at the moment at which that first video camera captures a current image of a three-dimensional scene, the current image including pixels organized in parallel rows, the rows of pixels having been captured one after the other so that a non-zero time t \u0394  elapses between the moments of capture of two successive rows of the current image, that system including:\n an electronic memory ( 10 ) containing:\n a reference image corresponding to an image of the same scene captured by a second video camera in a different pose, the reference image including pixels organized in parallel rows, the memory containing for each pixel of the reference image the measurement of a physical magnitude measured by that pixel, that physical magnitude being chosen in the group made up of the intensity of radiation emitted by the point photographed by that pixel and a depth separating that pixel from the point of the scene photographed by that pixel, \n the current image, the memory containing for each pixel of the current image the measurement of a physical magnitude measured by that pixel, that physical magnitude being the same as the physical magnitude measured by the pixels of the reference image, \n for each pixel of the reference image or the current image, a measurement of a depth that separates that pixel from the point of the scene photographed by that pixel, \n \n an information processing unit ( 12 ) adapted to:\n estimate the pose x pR  of the first video camera, \n estimate the speed x vR  of movement of the first video camera during the capture of the current image, \n \n characterized in that the information processing unit ( 12 ) is able to estimate the speed x vR  by seeking the speed x vR  that minimizes, for N points of the reference image, where N is an integer greater than 10% of the number of pixels of the reference image, a difference directly between:\n a first value of the physical magnitude at the level of a first point (p*) of the reference image, that first value being constructed from at least one measurement of that physical magnitude stored in that reference image, and \n a second value of the same physical magnitude at the level of a second point (p w2 ) of the current image, that second value being constructed from measurements of that physical magnitude stored in the current image and the coordinates of the second point, the coordinates of the second point (p w2 ) in the plane of the current image being obtained: \n by determining the coordinates of a third point (p w1 ) in the plane of the current image that corresponds to the projection onto that plane of the point of the scene photographed by the first point (p*), those coordinates being determined from the estimated pose x pR  and the measurements of the depths stored in the current image or the reference image, then \n by shifting the third point (p w1 ) a distance equal and opposite to the distance traveled by the first video camera between a time t 1  at which a first row of the current image is captured and a time t i  at which the row of pixels to which the third point (p w1 ) belongs was captured, that distance being a function of the time t \u0394  and the speed x vR , and finally \n by projecting the third point (p w1 ) shifted in this way onto the plane of the current image to obtain the coordinates of the second point (p w2 ).

Metadata:
- Claim Count in Document: 23.0
- Percentile: 91.0
- Lexical Diversity: 2.71429
- Patent Class: 348.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15037597', '12662731', '14690346', '13427121', '15266747']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6410386347956905
- 35 USC 102 Novelty (BERT): 0.5639028834650006
- Combined Prediction Score: 0.6333250596626215
- Mean Citation Score: 239.38581000000005
- Max Citation Score: 445.00366
- Similarity Product: 395.7429964716137

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test