Use of stereo camera systems for assessment of rockfish abundance in untrawlable areas and for recording pollock behavior during midwater trawls

We describe the application of two types of stereo camera systems in fisheries research, including the design, calibration, analysis techniques, and precision of the data obtained with these systems. The first is a stereo video system deployed by using a quick-responding winch with a live feed to provide species- and size- composition data adequate to produce acoustically based biomass estimates of rockfish. This system was tested on the eastern Bering Sea slope where rockfish were measured. Rockfish sizes were similar to those sampled with a bottom trawl and the relative error in multiple measurements of the same rockfish in multiple still-frame images was small. Measurement errors of up to 5.5% were found on a calibration target of known size. The second system consisted of a pair of still-image digital cameras mounted inside a midwater trawl. Processing of the stereo images allowed fish length, fish orientation in relation to the camera platform, and relative distance of the fish to the trawl netting to be determined. The video system was useful for surveying fish in Alaska, but it could also be used broadly in other situations where it is difficult to obtain species-composition or size-composition information. Likewise, the still-image system could be used for fisheries research to obtain data on size, position, and orientation of fish

Capture4VR: From VR Photography to VR Video

Virtual reality (VR) enables the display of dynamic visual content with unparalleled realism and immersion. However, VR is also still a relatively young medium that requires new ways to author content, particularly for visual content that is captured from the real world. This course, therefore, provides a comprehensive overview of the latest progress in bringing photographs and video into VR. Ultimately, the techniques, approaches and systems we discuss aim to faithfully capture the visual appearance and dynamics of the real world, and to bring it into virtual reality to create unparalleled realism and immersion by providing freedom of head motion and motion parallax, which is a vital depth cue for the human visual system. In this half-day course, we take the audience on a journey from VR photography to VR video that began more than a century ago but which has accelerated tremendously in the last five years. We discuss both commercial state-of-the-art systems by Facebook, Google and Microsoft, as well as the latest research techniques and prototypes

Capture4VR: From VR Photography to VR Video

Virtual reality (VR) enables the display of dynamic visual content with unparalleled realism and immersion. However, VR is also still a relatively young medium that requires new ways to author content, particularly for visual content that is captured from the real world. This course, therefore, provides a comprehensive overview of the latest progress in bringing photographs and video into VR. Ultimately, the techniques, approaches and systems we discuss aim to faithfully capture the visual appearance and dynamics of the real world, and to bring it into virtual reality to create unparalleled realism and immersion by providing freedom of head motion and motion parallax, which is a vital depth cue for the human visual system. In this half-day course, we take the audience on a journey from VR photography to VR video that began more than a century ago but which has accelerated tremendously in the last five years. We discuss both commercial state-of-the-art systems by Facebook, Google and Microsoft, as well as the latest research techniques and prototypes

From ”Sapienza” to “Sapienza, State Archives in Rome”. A looping effect bringing back to the original source communication and culture by innovative and low cost 3D surveying, imaging systems and GIS applications

Applicazione di tecnologie mensorie integrate Low Cost,web GIS,applicazione di tecniche di Computational photography per la comunicazione e condivisione dei dati, sistemi di Cloud computing.Archiviazione Grandi DatiHigh Quality survey models, realized by multiple Low Cost methods and technologies, as a container to sharing Cultural and Archival Heritage, this is the aim guiding our research, here described in its primary applications. The SAPIENZA building, a XVI century masterpiece that represented the first unified headquarters of University in Rome, plays since year 1936, when the University moved to its newly edified campus, the role of the main venue for the State Archives. By the collaboration of a group of students of the Architecture Faculty, some integrated survey methods were applied on the monument with success. The beginning was the topographic survey, creating a reference on ground and along the monument for the upcoming applications, a GNNS RTK survey followed georeferencing points on the internal courtyard. Dense stereo matching photogrammetry is nowadays an accepted method for generating 3D survey models, accurate and scalable; it often substitutes 3D laser scanning for its low cost, so that it became our choice. Some 360°shots were planned for creating panoramic views of the double portico from the courtyard, plus additional single shots of some lateral spans and of pillars facing the court, as a single operation with a double finality: to create linked panotours with hotspots to web-linked databases, and 3D textured and georeferenced surface models, allowing to study the harmonic proportions of the classical architectural order. The use of free web Gis platforms, to load the work in Google Earth and the realization of low cost 3D prototypes of some representative parts, has been even performed

OmniPhotos: Casual 360° VR Photography

Virtual reality headsets are becoming increasingly popular, yet it remains difficult for casual users to capture immersive 360° VR panoramas. State-of-the-art approaches require capture times of usually far more than a minute and are often limited in their supported range of head motion. We introduce OmniPhotos, a novel approach for quickly and casually capturing high-quality 360° panoramas with motion parallax. Our approach requires a single sweep with a consumer 360° video camera as input, which takes less than 3 seconds to capture with a rotating selfie stick or 10 seconds handheld. This is the fastest capture time for any VR photography approach supporting motion parallax by an order of magnitude. We improve the visual rendering quality of our OmniPhotos by alleviating vertical distortion using a novel deformable proxy geometry, which we fit to a sparse 3D reconstruction of captured scenes. In addition, the 360° input views significantly expand the available viewing area, and thus the range of motion, compared to previous approaches. We have captured more than 50 OmniPhotos and show video results for a large variety of scenes.This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 66599

Omnidirectional Stereo

Omnidirectional stereo (ODS) is a type of multi-perspective projection that captures horizontal parallax tangential to a viewing circle. This data allows the creation of stereo panoramas that provide plausible stereo views in all viewing directions on the equatorial plane