Efficient 3D Object Segmentation from Densely Sampled Light Fields with Applications to 3D Reconstruction

From Kaan Yücer, Alexander Sorkine-Hornung, Oliver Wang, Olga Sorkine-Hornung: Precise object segmentation in image data is a fundamental problem with various applications, including 3D object reconstruction. We present an efficient algorithm to automatically segment a static foreground object from highly cluttered background in light fields. A key insight and contribution of our paper is that a significant increase of the available input data can enable the design of novel, highly efficient approaches. In particular, the central idea of our method is to exploit high spatio-angular sampling on the order of thousands of input frames, e.g. captured as a hand-held video, such that new structures are revealed due to the increased coherence in the data. We first show how purely local gradient information contained in slices of such a dense light field can be combined with information about the camera trajectory to make efficient estimates of the foreground and background. These estimates are then propagated to textureless regions using edge-aware filtering in the epipolar volume. Finally, we enforce global consistency in a gathering step to derive a precise object segmentation both in 2D and 3D space, which captures fine geometric details even in very cluttered scenes. The design of each of these steps is motivated by efficiency and scalability, allowing us to handle large, real-world video datasets on a standard desktop computer... ( paper )

Cafe X Robotic Barista

From LAUNCH Festival 2016:   CafeX unveils fully automated robotic cafe at Launch Festival; companion iOS & Android app will allow users to order drinks prior to arrival; works w/ local coffee growers in ea mkt; cafe is ~60 sq ft & is open 24 hrs/day.  

OpenROV Trident Pre-orders

From OpenROV: OpenROV Trident Features: Depth: Capable of 100m (will ship with a 25m  tether - longer tethers will be sold separately) Mass: 2.9 kg Top Speed: 2 m/s Run Time: 3 hours Connectivity The data connection to Trident is a major evolution from the connection setup of the original OpenROV kit. It uses a neutrally buoyant tether to communicate to a towable buoy on the surface (radio waves don't travel well in water) and the buoy connects to the pilot using a long range WiFi signal. Using a wireless towable buoy greatly increases the practical range of the vehicle while doing transects and search patterns since a physical connection between the vehicle and the pilot doesn't need to be maintained. You can connect to the buoy and control Trident using a tablet or laptop from a boat or from the shore... ( preorder $1,199.00 )  

America, Regulate Drones Now or Get Left Behind

Missy Cummings for Wired:  Drones are a big business and getting bigger, a reality that comes with both economic opportunities and risks. The UAV market is set to jump from $5.2 billion in 2013 to $11.6 billion in 2023. Opportunities for delivery services, cinematography, and even flying cell towers could introduce thousands of jobs and reinvigorate an ailing aerospace market. At the same time, drone sales to hobbyists have exploded. Registered drone operators in the US now outnumber registered manned aircraft. In tandem with that growth, close calls with commercial aircraft have more than doubled in the past two years. An analysis of FAA reports by Bard College’s Center for the Study of the Drone counts 28 instances in which pilots changed course in order to avoid a collision.   Cont'd...

Robotics expert: Self-driving cars not ready for deployment

Joan Lowy for PHYS.org:  Self-driving cars are "absolutely not" ready for widespread deployment despite a rush to put them on the road, a robotics expert warned Tuesday. The cars aren't yet able to handle bad weather, including standing water, drizzling rain, sudden downpours and snow, Missy Cummings, director of Duke University's robotics program, told the Senate commerce committee. And they certainly aren't equipped to follow the directions of a police officer, she said. While enthusiastic about research into self-driving cars, "I am decidedly less optimistic about what I perceive to be a rush to field systems that are absolutely not ready for widespread deployment, and certainly not ready for humans to be completely taken out of the driver's seat," Cummings said. It's relatively easy for hackers to take control of the GPS navigation systems of self-driving cars, Cummings said. "It is feasible that people could commandeer self-driving vehicles ... to do their bidding, which could be malicious or simply just for the thrill of it," she said, adding that privacy of personal data is another concern.   Cont'd...

Image Processing 101

Sher Minn Chong wrote a good introductory to image processing in Python: In this article, I will go through some basic building blocks of image processing, and share some code and approaches to basic how-tos. All code written is in Python and uses  OpenCV , a powerful image processing and computer vision library... ... When we’re trying to gather information about an image, we’ll first need to break it up into the features we are interested in. This is called segmentation. Image segmentation is the process representing an image in segments to make it more meaningful for easier to analyze3. Thresholding One of the simplest ways of segmenting an image isthresholding. The basic idea of thresholding is to replace each pixel in an image with a white pixel if a channel value of that pixel exceeds a certain threshold... ( full tutorial ) ( iPython Notebook )

Postdoc's Trump Twitterbot Uses AI To Train Itself On Transcripts From Trump Speeches

From MIT: This week a postdoc at MIT’s Computer Science and Artificial Intelligence Lab (CSAIL) developed a Trump Twitterbot that Tweets out remarkably Trump-like statements, such as “I’m what ISIS doesn’t need.” The bot is based on an artificial-intelligence algorithm that is trained on just a few hours of transcripts of Trump’s victory speeches and debate performances... ... ( MIT article ) ( twitter feed )

How This New Drone Can Track Your Every Move

Lisa Eadicicco  for Time:  Drones can already follow professional snowboarders as they speed down a slope or keep up with mountain bikers racing through rocky terrain. But drone-equipped athletes are usually required to keep their phone nearby, since the aerial devices often rely on handheld devices’ GPS signal to track a person’s location. DJI’s newest drone, the Phantom 4, claims to eliminate that hassle. The company says the Phantom 4’s new ActiveTrack feature uses the drone’s front-facing sensors to see and track a target. “Being able to learn about the object, as it squats, as it rotates, as it turns, is really complicated,” says Michael Perry, DJI’s director of strategic partnerships. “When you’re flying toward something, you have to make a decision to fly around it, fly above it, or stop. And to train the system to learn those different functions is also a big challenge.”   Cont'd...

Roving robot 'ground drones' take to streets for deliveries

MARK BLUNDEN for Evening Standard:  A delivery robot tested among the crowds of central London is set to start being deployed in the capital.  The self-driving, battery-powered box on wheels is poised to undertake local delivery trials in Greenwich following 3,000 hours of testing. The robots by Starship Technologies have been described as “ground drones” and were created by former Skype co-founders Ahti Heinla and Janus Friis. Their invention is expected to be popular at smaller local businesses, such as bakeries and corner shops, that could send out the robot containing goods in its tub body costing only a pound or two.  Cont'd...

Japanese Firm To Open World's First Robot-run Farm

Spread , a vegetable producer, said industrial robots would carry out all but one of the tasks needed to grow the tens of thousands of lettuces it produces each day at its vast indoor farm in Kameoka, Kyoto prefecture, starting from mid-2017. The robots will do everything from re-planting young seedlings to watering, trimming and harvesting crops. The innovation will boost production from 21,000 lettuces a day to 50,000 a day, the firm said, adding that it planned to raise that figure to half a million lettuces daily within five years. “The seeds will still be planted by humans, but every other step, from the transplanting of young seedlings to larger spaces as they grow to harvesting the lettuces, will be done automatically,” said JJ Price, Spread’s global marketing manager. The new farm – an extension of its existing Kameoka farm – will improve efficiency and reduce labour costs by about half. The use of LED lighting means energy costs will be slashed by almost a third, and about 98% of the water needed to grow the crops will be recycled. The farm, measuring about 4,400 sq metres, will have floor-to-ceiling shelves where the produce is grown... ( cont'd )

DARPA - FLA Program Takes Flight

They may not have zoomed flawlessly around obstacles like the Millennium Falcon did as it careened through the hull of a crashed Star Destroyer in Star Wars VII. But the sensor-loaded quadcopters that recently got tested in a cluttered hangar in Massachusetts did manage to edge their way around obstacles and achieve their target speeds of 20 meters per second. Moreover, the quadcopters were unmanned … and real. Thus was the initial phase of data collection for DARPA's Fast Lightweight Autonomy (FLA) program recently deemed an encouraging success. DARPA’s FLA program aims to develop and test algorithms that could reduce the amount of processing power, communications, and human intervention needed for unmanned aerial vehicles (UAVs) to accomplish low-level tasks, such as navigation around obstacles in a cluttered environment. If successful, FLA would reduce operator workload and stress and allow humans to focus on higher-level supervision of multiple formations of manned and unmanned platforms as part of a single system.   Cont'd...

"It's quite large:" Exact Automation showcases world's largest robot

JULIE COLLINS for Fox 6 Now:  The world's largest robot is here in Milwaukee. But folks looking to get a glimpse of the giant piece of technology better act fast.With precision and ease, this robot can pick up an 800-pound motorcycle! "Well you can't help but be astounded by it, quite frankly. It's quite large," said James Schneberger with New Berlin Plastics, Inc. And it's right here in Milwaukee at Exact Automation. The company purchased the machine from FANUC -- a Japanese company. It arrived in November, but Exact Automation had work to do before it got here. "We had to pour new concrete in the building. We had to put 100,000 pound of concrete to prepare as a base for this robot because it weighs so much," said Exact Automation Owner Jim Mevis. Schneberger works around robots -- but nothing this large. Weighing in at 26,000 pounds, Schneberger is astonished at its size.   Cont'd...

Mobile Robotic Fabrication System for Filament Structures

From Maria Yablonina at ITECH: The project Mobile Robotic Fabrication System for Filament Structures, demonstrates a new production process for filament structures. It proposes multiple semi-autonomous wall climbing robots to distribute fiber filament, using any horizontal or vertical surface, or even existing architecture, to support the new structures. Compared to larger scale industrial robots that are limited by position and reach, these robots are enabled with movement systems and a collection of sensors that allow them to travel and interact accurately along typical ground, walls, roofs, and ceilings. One can imagine a fabrication process where an operator arrives to the scene with a suitcase housing all the necessary robots and materials to create a large structure. These agile mobile robotic systems move robotic fabrication processes beyond the constraints of the production hall, exposing vast urban and interior environments as potential fabrication sites... ( site )

Greenbot: Driverless Tractor

From Greenbot: The Greenbot was introduced at the Agritechnica 2015 trade fair. The Greenbot is the first driverless machine to be developed especially for professionals working in the green sector who have to carry out repetitive tasks on a regular basis, such as working in fruit cultivation, horticulture, agriculture, or the municipal sector.  The software that controls the fourwheel steering and hydraulic four-wheel drive system is userfriendly, safe and reliable. The Greenbot can be programmed to function fully independent and can be used to replicate tasks recorded in advance using a tractor with a driver. Programs can also be activated using the remote control, and then the Greenbot repeats the instructions. This mode is called ‘Teach & Playback’. The Greenbot is furthermore able to independently plan its own route and operations for specific applications, such as spraying orchards or mowing public green areas... ( site )

Experts At Davos Say Weaponized Artificial Intelligence Robots Are Dangerous

Matt Dayo for STGist:  This may sound like science fiction, or the plot of a Marvel movie, but AFP is reporting that scientists and arms experts in attendance at the World Economic Forum in Davos, Switzerland have issued a dire warning saying that robots with advanced artificial intelligence (or AI robots) could one day join wars and kill many people. A former United Nations Disarmament Affairs representative, Angela Kane, has told a forum in Davos that there are many countries that don’t understand what is involved and the development of such technology is limited to a certain number of rich and advanced nations. Kane and other experts at the debate say rules must be agreed to prevent the development of these killer AI robots.  But at one point during the debate, Kane said “it may be too late.”   Cont'd...

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