PATENT CLAIM ANALYSIS

Application Number: 16019000
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["348", "135000"]

Abstract:
A method obtains the shape of a target by projecting and recording images of dual frequency fringe patterns. Locations in each projector image plane are encoded into the patterns and projected onto die target while images are recorded. The resulting images show the patterns superimposed onto the target. The images are decoded to recover relative phase values for the patterns primary and dual frequencies. The relative phases are unwrapped into absolute phases and converted back to projector image plane locations. The relation between camera pixels and decoded projector locations is saved as a correspondence image representing the measured shape of the target. Correspondence images with a geometric triangulation method create a 3D model of the target. Dual frequency hinge patterns have a low frequency embedded into a high frequency sinusoidal, both frequencies are recovered in closed form by the decoding method, thus, enabling direct phase unwrapping.

Claim (Index 13):
The methods of  claim 11 , wherein the step of encoding comprises the steps of:\n choosing a number of frequencies; selecting a sequence of period parameters, the length of the sequence of period parameters being equal to the number of frequencies, each period parameter in the sequence of period parameters being a number greater than one; deriving a sequence of embedded frequencies from the sequence of period parameters, the length of the sequence of embedded frequencies being equal to the number of frequencies, the embedded frequencies in the sequence of embedded frequencies being in correspondence with the period parameters in the sequence of period parameters, a first embedded frequency in the sequence of embedded frequencies being equal to one divided by the first period parameter in the sequence of period parameters, each subsequent embedded frequency in the sequence of embedded frequencies having a previous embedded frequency, the subsequent embedded frequency being equal to the previous embedded frequency divided by the period parameter corresponding to the subsequent embedded frequency;\n computing a sequence of pattern frequencies, the length of the sequence of pattern frequencies being equal to the number of frequencies, the pattern frequencies in the sequence of pattern frequencies being in correspondence with the embedded frequencies in the sequence of embedded frequencies, a first pattern frequency in the sequence of pattern frequencies being equal to the first embedded frequency, each subsequent pattern frequency in the sequence of pattern frequencies being equal to the result of adding the first embedded frequency to the embedded frequency corresponding to the subsequent pattern frequency; \n selecting a sequence of frequency shift numbers, the length of the sequence of frequency shift numbers being equal to the number of frequencies, a first frequency shift number in the sequence of frequency shift numbers being a positive integer number greater or equal than three; each subsequent frequency shift number in the sequence of frequency shift numbers being a positive integer number greater or equal than two, the sum of all the frequency shift numbers in the sequence of frequency shift numbers being greater or equal than two times the number of frequencies plus one;\n establishing for each embedded frequency in the sequence of embedded frequencies a plurality of frequency shifts, the number of frequency shifts in the plurality of frequency shifts being equal to a corresponding frequency shift number in the sequence of frequency shift numbers; \n initializing the sequence of dual frequency sinusoidal fringe patterns as an empty sequence; \n creating a dual frequency sinusoidal fringe pattern for each embedded frequency and each frequency shift in the corresponding plurality of frequency shifts, and \n adding the dual frequency sinusoidal fringe pattern to the sequence of dual frequency sinusoidal fringe patterns.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 94.0
- Lexical Diversity: 1.84706
- Patent Class: 348.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13907426', '13674715', '11566026', '10898504', '15052489']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.628468611318977
- 35 USC 102 Novelty (BERT): 0.5082054662775929
- Combined Prediction Score: 0.6164422968148386
- Mean Citation Score: 217.787424
- Max Citation Score: 240.23955
- Similarity Product: 147.2184387592167

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

Dataset: test