PAPERS

Ricardo Oliva-García, Sabato Ceruso, José G. Marichal-Hernández & José M. Rodriguez-Ramos

This work introduces a real-time full-resolution depth estimation device, which allows integral displays to be fed with a real-time light-field. The core principle of the technique is a high-speed focal stack acquisition method combined with an efficient implementation of the depth estimation algorithm, allowing the generation of real time, high resolution depth maps.

Juan Trujillo, Álvaro Pérez, Óscar Casanova, Miriam Velasco, Sabato Ceruso, Ricardo Oliva, Óscar Gómez, Javier Martín, Alex Roqué, José Manuel Rodríguez, Jan O. Gaudestad

Wave Front Phase Imaging (WFPI), a new wafer geometry technique, is presented, that acquires 7.65 million data points in 5 seconds on a full 300mm wafer providing lateral resolution of 96µm. The system has high repeatability with root-mean-square (RMS) standard deviation (σRMS) in the single digit nm…

Wooptix’ team with the collaboration of Damien Gatinel & Jack T. Holladay

In this work, we characterize the in vivo ocular optics of the human eye with a lateral resolution of 8.6 microns, which implies roughly 1 million measurement points for a pupil diameter of 9 mm. The results suggest that the normal human eye presents a series of hitherto unknown optical patterns. This discovery could have a great impact on the way we understand some fundamental mechanisms of human vision.

Sabato Ceruso, Sergio Bonaque-González, Ricardo Oliva-García, José Manuel Rodríguez-Ramos

The problem of reconstructing a depth map from a sequence of differently focused images (focal stack) is called Depth from focus. The core idea of this method is to analyze the sharpness of each pixel and compare it along the axis of the focal stack to estimate the true depth value. This approach has two main drawbacks: it depends on the optics of the camera and on the focus measure operator…

José G. Marichal-Hernández, Ricardo Oliva-García, Óscar Gómez-Cárdenes, Iván Rodríguez-Méndez, José M. Rodríguez-Ramos

The Radon transform is a valuable tool in inverse problems such as the ones present in electromagnetic imaging. Up to now the inversion of the multiscale discrete Radon transform has been only possible by iterative numerical methods while the continuous Radon transform is usually tackled…

Wooptix’ team with the collaboration of Damien Gatinel & Jack T. Holladay

In this work, we characterize the in vivo ocular optics of the human eye with a lateral resolution of 8.6 microns, which implies roughly 1 million measurement points for a pupil diameter of 9 mm. The results suggest that the normal human eye presents a series of hitherto unknown optical patterns. This discovery could have a great impact on the way we understand some fundamental mechanisms of human vision.

Juan Manuel Trujillo-Sevilla, José Manuel Rodríguez-Ramos, Jan Olaf Gaudestad

In this paper we introduce a new metrology technique for measuring wafer geometry on silicon wafers. Wave Front Phase Imaging (WFPI) has high lateral resolution and is sensitive enough to measure roughness on a silicon wafer by simply acquiring a single image snapshot of the entire wafer.

Sergio Bonaque, Juan Manuel Trujillo, Oscar Casanova, David Carmona, Miguel Sicilia, Sabato Ceruso, Jan Gaudestad, José Manuel Rodríguez-Ramos

We present a new wave front sensing technique based on detecting the propagating light waves. This allows the user to acquire millions of data points within the pupil of the human eye; a resolution several orders of magnitude higher than current industry standard ophthalmic devices.