Dr. Martin Wäny Profile

Dr. Martin Wäny

CEO at CMOSIS

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Publications (10)

SPIE Journal Paper | 11 January 2017

Full image-processing pipeline in field-programmable gate array for a small endoscopic camera

Sheikh Shanawaz Mostafa, L. Natércia Sousa, Nuno Fábio Ferreira, Ricardo Sousa, Joao Santos, Martin Wäny, F. Morgado-Dias

JEI, Vol. 26, Issue 01, 013005, (January 2017) https://doi.org/10.1117/12.10.1117/1.JEI.26.1.013005

KEYWORDS: Field programmable gate arrays, Endoscopy, Cameras, Sensors, Image processing, Image quality, Video, Optical filters, CMOS sensors, Image sensors

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Proceedings Article | 13 May 2015 Paper

Advanced illumination control algorithm for medical endoscopy applications

Ricardo Sousa, Martin Wäny, Pedro Santos, F. Morgado-Dias

Proceedings Volume 9481, 94810I (2015) https://doi.org/10.1117/12.2176928

KEYWORDS: Cameras, Light emitting diodes, Endoscopy, Light sources and illumination, Field programmable gate arrays, Light sources, LED lighting, Digital cameras, Logic, Surgery

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Proceedings Article | 13 March 2015 Paper

Multi-camera synchronization core implemented on USB3 based FPGA platform

Ricardo Sousa, Martin Wäny, Pedro Santos, Morgado Dias

Proceedings Volume 9403, 940306 (2015) https://doi.org/10.1117/12.2082928

KEYWORDS: Cameras, Sensors, Clocks, Field programmable gate arrays, Image sensors, Control systems, Interfaces, 3D vision, Video, Voltage controlled current source

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Proceedings Article | 2 March 2015 Paper

Image synchronization for 3D application using the NanEye sensor

Ricardo Sousa, Martin Wäny, Pedro Santos, Morgado Dias

Proceedings Volume 9304, 93041N (2015) https://doi.org/10.1117/12.2078271

KEYWORDS: Cameras, Sensors, Clocks, Image sensors, Video, Interfaces, Field programmable gate arrays, Control systems, Imaging systems, 3D vision

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Proceedings Article | 25 September 2014 Paper

Miniaturized camera system for an endoscopic capsule for examination of the colonic mucosa

Frank Wippermann, Martin Müller, Martin Wäny, Stephan Voltz

Proceedings Volume 9192, 91920Z (2014) https://doi.org/10.1117/12.2061221

KEYWORDS: Cameras, Imaging systems, Lenses, Polymers, Endoscopy, Colon, Objectives, Glasses, Endoscopes, Navigation systems

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Proceedings Article | 28 January 2009 Paper

16k pixel digital line-scan sensor with 12bit resolution and 40kS/second

Martin Wäny, Paulo Franco, Stephan Voltz

Proceedings Volume 7249, 72490F (2009) https://doi.org/10.1117/12.805667

KEYWORDS: Sensors, Line scan image sensors, Image resolution, Optical resolution, Packaging, Connectors, Ceramics, Internet, Data conversion, Cameras

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Proceedings Article | 28 January 2009 Paper

Minimal form factor digital-image sensor for endoscopic applications

Martin Wäny, Stephan Voltz, Fabio Gaspar, Lei Chen

Proceedings Volume 7249, 72490V (2009) https://doi.org/10.1117/12.805665

KEYWORDS: Sensors, Endoscopy, Cameras, Image sensors, Data transmission, Power supplies, Data communications, Visualization, Imaging systems, Electronic imaging

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This paper presents a digital image sensor SOC featuring a total chip area (including dicing tolerances) of 0.34mm² for endoscopic applications. Due to this extremely small form factor the sensor enables integration in endoscopes, guide wires and locater devices of less than 1mm outer diameter. The sensor embeds a pixel matrix of 10'000 pixels with a pitch of 3um x 3um covered with RGB filters in Bayer pattern. The sensor operates fully autonomous, controlled by an on chip ring oscillator and readout state machine, which controls integration AD conversion and data transmission, thus the sensor only requires 4 pin's for power supply and data communication. The sensor provides a frame rate of 40Frames per second over a LVDS serial data link. The endoscopic application requires that the sensor must work without any local power decoupling capacitances at the end of up to 2m cabling and be able to sustain data communication over the same wire length without deteriorating image quality. This has been achieved by implementation of a current mode successive approximation ADC and current steering LVDS data transmission. An band gap circuit with -40dB PSRR at the data frequency was implemented as on chip reference to improve robustness against power supply ringing due to the high series inductance of the long cables. The B&W versions of the sensor provides a conversion gain of 30DN/nJ/cm² at 550nm with a read noise in dark of 1.2DN when operated at 2m cable. Using the photon transfer method according to EMVA1288 standard the full well capacity was determined to be 18ke-. According to our knowledge the presented work is the currently world smallest fully digital image sensor. The chip was designed along with a aspheric single surface lens to assemble on the chip without increasing the form factor. The extremely small form factor of the resulting camera permit's to provide visualization with much higher than state of the art spatial resolution in sub 1mm endoscopic applications, where so far only optical fiber bundles providing 1k - 3k image points could be used. In many applications, such as guide wires and locater devices the small form factor permits to implement visualization for the first time.

Proceedings Article | 24 April 2002 Paper

CMOS megapixel digital camera with CameraLink interface

Martin Waeny, Peter Schwider

Proceedings Volume 4669, (2002) https://doi.org/10.1117/12.463420

KEYWORDS: Cameras, Sensors, Digital cameras, Connectors, CMOS sensors, Data transmission, Standards development, Manufacturing, Field programmable gate arrays, Image sensors

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Proceedings Article | 15 May 2001 Paper

Low-power digital image sensor for still-picture image acquisition

Steve Tanner, Stefan Lauxtermann, Martin Waeny, M. Willemin, Nicolas Blanc, Joachim Grupp, Rudolf Dinger, Elko Doering, Michael Ansorge, Peter Seitz, Fausto Pellandini

Proceedings Volume 4306, (2001) https://doi.org/10.1117/12.426972

KEYWORDS: Camera shutters, Sensors, Image sensors, Transistors, Image acquisition, Analog electronics, Logic, Image processing, Image resolution, LCDs

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Proceedings Article | 15 May 2001 Paper

High-sensitivity high-dynamic digital CMOS imager

Martin Waeny, Steve Tanner, Stefan Lauxtermann, Nicolas Blanc, M. Willemin, Martin Rechsteiner, Elko Doering, Joachim Grupp, Peter Seitz, Fausto Pellandini, Michael Ansorge

Proceedings Volume 4306, (2001) https://doi.org/10.1117/12.426992

KEYWORDS: Imaging systems, Interference (communication), Signal to noise ratio, Sensors, Capacitance, Photodiodes, CMOS sensors, Signal detection, Image sensors, Capacitors

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Showing 5 of 10 publications

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