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|Posté le: Lun 2 Avr 2018 - 04:31 Sujet du message: presented by Stanford researchers
|SAN FRANCISCO puma rihanna noir creepers , July 1 (Xinhua) -- Researchers at Stanford University in northern California have developed a system using 3 dimensional (3-D) sensing technologies and a computer vision algorithm to acquire detailed building information.
Newer buildings often have computerized blueprints and records, including details such as the number of rooms, doors and windows, and the square footage of floors, ceilings and walls. But such information may not exist for older buildings, necessitating the time-consuming and difficult task of collecting these details manually for remodeling or refurbishing purposes.
The new system, presented by Stanford researchers at the Conference on Computer Vision and Pattern Recognition of the Institute of Electrical and Electronics Engineers (IEEE) puma rihanna noir et dore , which started Sunday and ended Friday, is designed to automate the process of getting detailed building information, first by using light to measure every feature of a building' s interior, room by room and floor by floor, to create a massive data file that captures the spatial geometry of any building, and then by feeding the raw data file into a new computer vision algorithm.
The algorithm identifies structural elements such as walls and columns, as well as desks puma rihanna noir et blanc , filing cabinets and other furnishings.
"Renovation projects live and die by the quality of information," according to Martin Fischer, a Stanford professor of civil and environmental engineering.
The new process is the brainchild of Stanford doctoral student Iro Armeni, with interdisciplinary oversight from Silvio Savarese, a Stanford assistant professor in computer science who leads the Computational Vision and Geometry Lab, and Fischer, who heads the Center for Integrated Facility Engineering.
"People have been trying to do this on a much smaller scale puma rihanna blanche femme , just a handful of rooms," said Savarese. "This is the first time it's possible to do it at the scale of whole buildings, with hundreds of rooms."
Armeni, once an architect on the Greek island of Corfu, used to work on custom renovations on historical buildings hundreds of years old. She and colleagues used tape measures to redraw building plans, a practice that is both time-consuming and often inaccurate.
She began by replacing her tape measure with laser scanners and 3-D cameras, which use light to take measurements with up to millimeter accuracy. When placed inside a building puma rihanna blanche creepers , they send out pulses of light in all directions, bathing every interior surface. By recording precisely how long it takes for a beam of light to hit a given point in the room and bounce back, they create a data file consisting of literally millions of measurements, about specific points where beams of light encountered some surface. This massive data file is called a raw point cloud.
However, humans had to look at the point cloud on a computer screen to identify building elements such as windows, walls, hallways and furniture and then type that information into software tools. To the computer puma rihanna velvet creeper , the point cloud was an indistinguishable mass of data.
The Stanford team's innovation was developing a computer vision system that could analyze the point cloud for a building, distinguish the rooms, and then categorize each element in each room. This automated the second half of the process, the need for humans to annotate the data. While buildings vary in many ways, including room size, purpose and interior decoration, this is where machine learning and computer vision came in.
To train their computer vision system www.pumarihannapascher.fr , the researchers collected a great amount of 3-D point cloud data that humans had annotated. These annotations specified all sorts of building features. Armeni managed the task of feeding this annotated point cloud data to the algorithm.
Through repetition, the system "learned" to recognize different building elements. Ultimately, the researchers created an algorithm that can analyze raw point cloud data from an entire building and, without human assistance, identify the rooms, enter each room, and detail the structural elements and furniture.
"This kind of geometric puma rihanna france , contextual reasoning is one of the most innovative parts of the project," Savarese was quoted as saying by a news release from Stanford.
Armeni hopes to move and project forward and create an algorithm that can track the whole life cycle of a building - through design, construction, occupation and demolition. "As engineers, we shouldn't lose time trying to find the current status of our building," she said. "We should invest this time in doing something creative and making our buildings better."
UNITED NATIONS, Feb. 18 (Xinhua) -- United Nations Secretary-General Ban Ki-moon on Thursday paid tribute to former UN chief Boutros Boutros-Ghali who died Tuesday at the age of 93.
"Boutros Boutros-Ghali had both the fortune and the misfortune to serve as the first post-Cold-War Secretary-General of the United Nations puma rihanna solde ," said Ban at the General Assembly Session in Memory of Boutros Boutros-Ghali.
Boutros-Ghali from Egypt served as the sixth UN chief from 1992 to 1996.
In his first month in office, Boutros-Ghali presided over the first-ever Summit of the Security Council, which served as "a powerful symbol of the will of world leaders to make greater use of the United Nations," said Ban.
Ban also noted that Boutros-Ghali "broke barriers as the first African and Arab Secretary-General of the United Nations, and consistently gave voice to the poorest and least powerful members of the human family."
Boutros-Ghali also oversaw remarkable growth in peacekeeping.
"His 'Agenda for Peace' report made far-reaching proposals for fortifying this flagship UN activity, many of which have since become standard practice -- but many of which also remain unfulfilled," said Ban puma rihanna pas cher , who said peacekeeping helped Cambodia, El Salvador, Mozambique and other countries emerge f. Cheap Capitals Jerseys Cheap Team Canada Hockey Jerseys Cheap St.Louis Blues Jerseys Cheap Houston Texans Jerseys Wholesale Ravens Jerseys Wholesale Panthers Jerseys Wholesale Packers Jerseys Wholesale Lions Jerseys Wholesale Cleveland Browns Jerseys Wholesale Jacksonville Jaguars Jerseys