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We propose a method for 3D video at ~8 frames per second with 32 × 32 pixels resolution to be applied in hyperspectral camera single-pixel and RADAR for operating in outdoor applications with severe weather conditions or GPS-denied environments. Dynamic environments present different factors that limit performance in the quality image and video of conventional cameras based on RGB sensors as atmospheric effects, background light noise saturation, low-visibility, or obstacle on the scene, for which have been proposed different solutions from the integration of sensors hyper-spectral and fusion technologies as RADAR, and LIDAR. A low-cost solution for image sensors in low-light scattering media that offer more integration capacity with other sensors is a vision system based on the principle of single-pixel imaging (SPI). For that, we developed an SPI camera with active NIR illumination at wavelength 1550 nm in combination with millimeter RADAR in band 80 GHz for the generation of 3D video. For generation 3D video, we will implement an architecture GPU and define a reconstruction parallelized robust 3D algorithm based on the Shape-for-Shading (SFS) method, deep learning, and depth mapping with depth with RADAR to reach a near-continuous real-time 3D frame. As an experimental setup, we build a scenario to simulate different conditions environment as low-illumination, scattering, and irregularity surfaces, where we can evaluate the performance of our system vision in comparison with RGB camera using figure-of-merit as PSNR, RMSE, and VIF. Furthermore, to determine the system's capacity for future sensor vision by UAVs.



Actualizado: 24 oct 2022


We present the development of a low-cost orthogonal frequency division multiplexing (OFDM) radar system with multi-carrier in-band S in configuration 1x2 MIMO. For the generation of 2D images using the range doppler algorithm (RDA) with carrier control and phase adjustment OFDM to improve the spatial resolution of the radar images. The modulation OFDM applied to the radar systems offers improvements over systems that use modulation LFM at level spatial resolution through techniques like space diversity through MIMO array antennas, bandwidth control, and reduction of ambiguity range through the insertion of a cyclic prefix (CP). Therefore, its integration in microwave systems for images offers a high advantage in the resolution and synthesis of aperture. Furthermore, the radar system proposed is oriented to unmanned land vehicles (UGV) applications, which apply to the virtual antenna to increment the antenna aperture to reach a more effective measurement area.



Technical development to interpret etched nuclear tracks induced by single-charged particles or by complex interactions in plastic detectors exposed at accelerators or at GCR during space missions at Low Earth Orbit has received much attention. Frequently, large numbers of tracks are to be analyzed, often several thousand frames are under scrutiny for an individual track detector. Hence automatic processing is required. We show an alternative, new technique to analyze etched tracks by a commercially available product: IMAQ™ Vision Builder6, made by National Instruments. The data acquisition setup is the usual one: the image is collected by a CCD camera and sent to a data acquisition board type IMAQ™ PCI/PXI™-1409 (National Instruments). Then the image is analyzed with a purpose-built algorithm utilizing the IMAQ™ Vision Builder6 software, which includes a set of functions, such as image enhancement, filtration, binary image conversion, pattern recognition, providing frequency histograms for selected track parameters. To evaluate the technique employed with this newly available system, we present some results from a track etch detector evaluation algorithm developed by Pálfalvi et al. at the Atomic Energy Research Institute (Budapest).

23rd International Conference on Nuclear Tracks in Solids, Beijing (China), 11-15 September 2006

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