Publications by Alexis Rochas | EPFL Graph Search

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The design and characterization of an imaging system is presented for depth information capture of arbitrary three-dimensional (3-D) objects. The core of the system is an array of 32 × 32 rangefinding pixels that independently measure the time-of-flight of ...

A 3D imager is presented capable of computing the depth map as well as the intensity scale of a given scene. The heart of the system is a two-dimensional array of single photon avalanche diodes fabricated in standard CMOS technology. The diodes exhibit low noise equivalent power, high dynamic range and superior linearity. The 3D imager achieves sub-millimetric precision at depth-of-field of a few meters. It operates using a standard LASER source pulsed at 50MHz with 40mW peak power and requires no mechanica

A 3D imager is presented capable of capturing the depth map of an arbitrary scene. Depth is measured by computing the time-of-flight of a ray of light as it leaves the source and is reflected by the objects in the scene. The round-trip time is converted to digital code independently for each pixel using a CMOS time-to-digital converter. To reach millimetric accuracies an array of 32×32 highly sensitive, ultra-low jitter CMOS detectors capable of detecting a single photon is used. The scene is illuminated us

In this paper we report on a 32×32 optical imager based on single photon avalanche diodes integrated in CMOS technology. The maximum measured dynamic range is 120dB and the minimum noise equivalent intensity is 1.3×-3lx. The minimum integration time per pi ...

An 8x4 avalanche diode array in a 0.8μm CMOS process uses single photon counting for time-of-light range finding with 100ps 40mW decollimated laser pulses. An accuracy of 618μm is achieved from 15cm to 1m with 10e4 pulses.

Integrated circuit (1) comprising: an array of single photon avalanche diodes (SPADs), a plurality of read-out circuits, each SPADs being coupled to one read-out circuit, wherein at least some of the read-out circuits comprise time-to-digital converters (T ...

Alexis Rochas

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Design and characterization of a CMOS 3-D image sensor based on single photon avalanche diodes

Toward a 3-D Camera Based on Single Photon Avalanche Diodes

A CMOS 3D camera with millimetric depth resolution

CMOS imager based on single photon avalanche diodes

A CMOS single photon avalanche diode array for 3D imaging

Integrated imager circuit comprising a monolithic array of single photon avalanche diodes

A 4µs Integration Time Imager Based on CMOS Single Photon Avalanche Diode Technology

Single photon avalanche diodes in CMOS technology