Time-resolved imaging has made it possible to look around corners by exploiting information from diffuse light bounces. While there have been successive improvements in the field since its conception, so far it has only been proven to work in very simple and controlled scenarios. We present a public dataset of synthetic timeresolved Non-Line-of-Sight (NLOS) scenes with varied complexity aimed at benchmarking reconstructions. It includes scenes that are common in the real world but remain a challenge for NLOS reconstruction methods due to the ambiguous nature of higher-order diffuse bounces naturally occurring in them. With over 300 reconstructible scenes, the dataset contains an order of magnitude more scenes than what is available currently. The final objective of the dataset it to boost NLOS research to take it closer to its real-world applications. CCS CONCEPTS• Computing methodologies → Reconstruction; Computational photography; Ray tracing.

Abstract

The corrosion study of Fe-40Al+2% Rare Earths (RE) intermetallic alloy in NS4 solution at room temperature was carried out. The intermetallic alloy was previously produced by melting in an induction furnace. The alloy microstructure is constituted by a minority phase of Fe3Al, homogeneously dispersed in the majority phase of FeAl. The effect of pH condition was presented in the corrosion mode, at pH 5 the sample showed uniform corrosion, while at pH 3 and 7 some pitting sites were observed, however the metallic samples showed uniform corrosion on the exposed areas. The anodic dissolution mechanism occurred preferentially in the FeAl phase observed at pH 3, which corresponds to the majority phase or alloy microstructure. Electrochemical results were complemented with the microstructure and chemical characterization by scanning electron microscopy, energy dispersion spectroscopy and X-ray diffraction analysis.

The study of corrosion behavior of polyurethane/nanohydroxyapatite hybrid coating in aerated Hank solution at 25 °C by Potentiodinamic and Electrochemical Impedance techniques was realized. The nanohydroxyapatite (nHA) powders were synthesized by ultrasonic assisted co-precipitation wet chemical method and then mixed with pure polyurethane (PU) during the polymerization. Results were supported by SEM morphologic characterization. Results showed that good corrosion resistance of hybrid coating, showing small corrosion product layer formation. Corrosion mechanisms are affected by an increasing of polarization resistance, promoting decreasing in the corrosion rates. Diffusion of ionic species was the governing mechanism in the corrosion behavior of polyurethane/nanohydroxyapatite hybrid coating.