Systems And Methods For Estimating Values Of A Continuous Wavelet Transform
First Claim
1. A method for processing a scalogram to estimate one or more energy values in a wedge region of the scalogram, the method comprising:
- receiving a signal; and
using processing equipment for;
transforming the signal based at least in part on a continuous wavelet transform;
generating the scalogram based at least in part on the transformed signal;
estimating the one or more energy values in the wedge region of the scalogram based at least in part on an estimation scheme;
determining one or more signal parameters of the signal based at least in part on the one or more estimated energy values; and
outputting the determined one or more signal parameters to an output device.
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Abstract
According to embodiments, techniques for estimating scalogram energy values in a wedge region of a scalogram are disclosed. A pulse oximetry system including a sensor or probe may be used to receive a photoplethysmograph (PPG) signal from a patient or subject. A scalogram, corresponding to the obtained PPG signal, may be determined. In an arrangement, energy values in the wedge region of the scalogram may be estimated by calculating a set of estimation locations in the wedge region and estimating scalogram energy values at each location. In an arrangement, scalogram energy values may be estimated based on an estimation scheme and by combining scalogram values in a vicinity region. In an arrangement, the vicinity region may include energy values in a resolved region of the scalogram and previously estimated energy values in the wedge region of the scalogram. In an arrangement, one or more signal parameters may be determined based on the resolved and estimated values of the scalogram.
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Citations
20 Claims
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1. A method for processing a scalogram to estimate one or more energy values in a wedge region of the scalogram, the method comprising:
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receiving a signal; and using processing equipment for; transforming the signal based at least in part on a continuous wavelet transform; generating the scalogram based at least in part on the transformed signal; estimating the one or more energy values in the wedge region of the scalogram based at least in part on an estimation scheme; determining one or more signal parameters of the signal based at least in part on the one or more estimated energy values; and outputting the determined one or more signal parameters to an output device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
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11. A system for processing a scalogram to estimate one or more energy values in a wedge region of the scalogram, the system comprising:
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a sensor capable of generating a signal; and one or more processors coupled to the sensor, wherein the one or more processors are capable of; receiving the signal from the sensor; transforming the signal based at least in part on a continuous wavelet transform; generating the scalogram based at least in part on the transformed signal; estimating the one or more energy values in the wedge region of the scalogram based at least in part on an estimation scheme; determining one or more signal parameters of the signal based at least in part on the one or more estimated energy values; and outputting the determined one or more signal parameters to an output device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification