Patent
System and method for estimating an ambient light condition using an image sensor and field-of-view compensation
TLDR
In this paper, a system and method for estimating an ambient light condition using an image sensor of a digital camera is presented, where an array of pixels is obtained using the image sensor and a matrix of grid elements is defined.Abstract:
A system and method for estimating an ambient light condition is using an image sensor of a digital camera. An array of pixels is obtained using the image sensor. A matrix of grid elements is defined. Each grid element comprises multiple adjacent pixels of the array of pixels. A first measurement value is generated for a grid element of the matrix of grid elements based on the pixels associated with the grid element. A set of grid elements are identified having a first measurement value that satisfies a brightness criteria. A second measurement is generated using the identified set of grid elements. A simulated-light-sensor array is generated using the second measurement value. An estimate of the ambient light condition is calculated using the simulated-light-sensor array.read more
Citations
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References
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Journal ArticleDOI
On the Analysis of Fingertip Photoplethysmogram Signals
TL;DR: Different types of artifact added to PPG signal, characteristic features of PPG waveform, and existing indexes to evaluate for diagnoses are discussed.
Patent
Physiological signal monitoring system
TL;DR: In this article, a photoplethysmography (PPG) sensor, a processing device, and a Web site server are used for determining, displaying and analyzing various cardiovascular parameters.
Patent
Semiconductor image sensor module and method of manufacturing the same
Shin Iwabuchi,Makoto Motoyoshi +1 more
TL;DR: In this paper, a CMOS type semiconductor image sensor module is provided by stacking a first semiconductor chip, which has an image sensor wherein a plurality of pixels composed of a photoelectric conversion element and a transistor are arranged, and a second semiconductor chips, which have an A/D converter array.
Patent
High dynamic range optical inspection system and method
TL;DR: In this paper, a high dynamic range and high precision broadband optical inspection system and method are provided for high throughput substrate inspection in which the sides, bevels and edges of the substrate may be rapidly or simultaneously inspected for defects.
Patent
Washable wearable biosensor
Rosalind W. Picard,Clayton Williams,Richard Fletcher,Hoda Eydgahi,Ming-Zher Poh,Oliver Orion Wilder-Smith,Kyunghee Kim,Kelly Dobson,Jackie Chia-Hsun Lee +8 more
TL;DR: In this paper, a washable, wearable biosensor that can gather sensor data, communicate the sensed data by wireless protocols, and permits the analysis of sensed data in real-time as a person goes about their normal lifestyle activities is presented.