Publications de Gözen Köklü

A novel cmos image sensor with event/change detection and reduced data redundancy

Giovanni De Micheli, Gözen Köklü, Sandro Carrara

A Digital Pixel Sensor (DPS) based CMOS camera configured to record frames and comprising an event detection sensor configured to look for an event happening in a determined frame, comprising an array of event detection pixels, a first reference voltage ge ...

2014

Design and Implementation of CMOS Image Sensors for Biomedical Applications

Gözen Köklü

Since the first introduction of digital cameras, the camera market has been taking tremendous interest from many fields. This trend has even accelerated when the cost, size, and power consumption of such devices were reduced with the introduction of camera ...

EPFL2014

Characterization of Standard CMOS Compatible Photodiodes and Pixels for Lab-on-Chip Devices

Yusuf Leblebici, Giovanni De Micheli, Gözen Köklü, Sandro Carrara

High quality CMOS image sensors are of great importance for LoC - Lab-on-Chip devices based on optical measurements. The main target in these devices is to minimize the cost and area while achieving a good resolution. The performance parameters of image se ...

2013

An event-detection high dynamic range CMOS image sensor

Yusuf Leblebici, Giovanni De Micheli, Gözen Köklü, Sandro Carrara

A novel CMOS image sensor is proposed to overcome the analog design limitations in Active Pixel Sensors - APS and large area overcome in Digital Pixel Sensors - DPS for use in bio-medical applications. The design includes a pixel level event generation mec ...

2013

NutriChip: Nutrition Analysis meets Microfluidics

Martinus Gijs, Paolo Silacci, Guy Vergères, Gözen Köklü, Julien Michel Ghaye, Sandro Carrara, Hamideh Jafarpoorchekab, Christine Ruffert

This focus article introduces the concept of NutriChip, an integrated microfluidic platform for investigating the potential of the immuno-modulatory function of dairy food. The core component of the NutriChip is a miniaturized artificial human gastrointest ...

Royal Society of Chemistry2013

Empowering Low-Cost CMOS Cameras by Image Processing to Reach Comparable Results with Costly CCDs

Yusuf Leblebici, Giovanni De Micheli, Gözen Köklü, Julien Michel Ghaye, Sandro Carrara

Despite the huge research effort to improve the performance of the complementary metal oxide semiconductor (CMOS) image sensors, charge-coupled devices (CCDs) still dominate the cell biology-related conventional fluorescence microscopic imaging market wher ...

2013

Quantitative Comparison of Commercial CCD and Custom-Designed CMOS Camera for Biological Applications

René Beuchat, Yusuf Leblebici, Giovanni De Micheli, Gözen Köklü, Julien Michel Ghaye, Sandro Carrara

In biological applications and systems where even the smallest details have a meaning, CCD cameras are mostly preferred and they hold most of the market share despite their high costs. In this paper, we propose a custom-designed CMOS camera to compete with ...

2012