A Hierarchical Face Recognition Method Based on Local Binary Pattern

A Hierarchical Face Recognition Method Based on Local Binary Pattern

A Hierarchical Face Recognition Method Based on Local Binary Pattern



This paper proposes a hierarchical method to deal with the multi-pose face recognition problem. The Local Binary Pattern (LBP) feature is used as the uniform feature throughout the two-hierarchy process. Also, a new method, named Multi-expert Intelligent Decision System, is proposed to improve the performance of the pose estimation
process. According to the experiments, the method is proved to be efficient and robust. Key words: Hierarchical Face Recognition, Local Binary Pattern, Multi-expert Intelligent Decision System, Facial Pose Estimation.


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Mantis – A Hydraulic powered Hexapod Walking Machine.
Developed 2009 to present by Matt Denton.

After four years intensive R&D, inspiration, design and build, Micromagic Systems is proud to unveil Mantis — the biggest, all-terrain operational hexapod robot in the world.

This 2.2-litre Turbo Diesel-powered, British-designed and –built walking machine can be piloted or remote wifi-controlled, stands 2.8 metres high with a five meter working envelope and weighing in at just under two tonnes.

“This is definitely the largest hexapod we have built so far,” says Micromagic founder and Mantis’ chief designer Matt Denton. “This walking machine started as an idea back in 2007, we secured private funding in 2009 to start the project and – after three years of design, build and testing – the robot made a first successful test drive in the summer of 2012 at Bestival UK.””It’s been called an instant design classic and an inspiring engineering project for the next generation.”2013-04-09-141809_709x404_scrot huge-diesel-spider-is-scary-videophoto-gallery_14 mantis3-640x426 Mantis Render SIDE photo-792191

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Innovation is everywhere. Just need a vision to see it.

Imagine a robot shaped like a ball, which transforms into a walking six-legged contraption. That’s a description of MorpHex, a spherical hexapod robot that is the brainchild of Kare Halvorsen, a Norwegian engineer who is also known as Zenta.

The MorpHex’s spherical form is the latest development in this ongoing robotics project. The sleek and beautiful MorpHex might look perfectly at home alongside EVE and her cohorts from the movie Wall-E.


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The Battlefield Extraction-Assist Robot (BEAR) is a military robot under the development of Vecna Technologies that will be used for the extraction of wounded soldiers from the battlefield with no risk to human life. The humanoid robot uses a powerful hydraulics system to carry humans and other heavy objects over long distances and rough terrain such as stairs. The robot’s cameras and microphone allow an operator to remotely control the BEAR. Daniel Theobald invented the robot in 2005 and it was featured in Time Magazine’s Best Inventions of 2006. The BEAR is  currently still being developed and tested for applications on and off of the battlefield.












PIRO technologies is a leading company which deals with various projects and research work. We are having a good team which comprising 10 members. We have already performed various projects on software and hardware. Now we are focusing on the robotics because by using the robotics technology quality of products and process improves considerably. Primarily our concern is to explore new ideas and innovations for the educational institutions. In this technical era new technologies are implemented on us day by day. Various schools in India as well as all over the world are using such technologies for smart classes and digital libraries. So we are looking forward and trying to provide these facilities on easiest platform which is easy to understand for the tutors as well as for the learners, and also we are trying to make these cost effective………….

solo wheel

Solo Wheel is the  smallest, greenest, most convenient “people mover” ever invented. This gyro- stabilized electric unicyle is compact and to fun ride.

Advanced motor design: New Motors Reach New Applications

 Permanent magnets, axial, transverse, and radial flux designs optimize torque, power, efficiency, size, weight, and other motor performance parameters, as explained in this February Control Engineering feature article. Reader feedback added below on Feb. 16.

Internal rotor axial flux machine, left; torus axial flux machine right; redrawn from a Yasa Motors image.Electric motors are the mechanical muscle power that drives fans, blowers, pumps, printers, disk drives, ATMs, and industrial and medical machines, along with automobiles, busses, aircraft control surfaces, and hundreds of other applications. Generators who convert mechanical motion into electrical power generation use the same basic rotors, stators, bearings and support structure. Today’s engineering challenges usually include optimizing motor/generator torque, power, efficiency, size, weight, and other performance parameters.

Motor, drive, controls

For electric motors, the specific applications determine the parameters to be optimized. Almost all motors are driven at constant speed, variable speed, or start-stop motion. The increasing emphasis on higher power efficiency leads to variable speed electronic drives being used to achieve higher power efficiency across a wider range than constant speed applications. Developing motion systems that achieve precise positioning capability usually requires motors with high peak torques and smooth velocity and torque motion down to zero speed. The power and control electronics provides a key component to the overall motion control or mechatronics system that includes motor, drive, and control elements.

South Korea’s Electric Research Institute (KERI) has been building various transverse flux motors for more than 10 years.Five popular generic types of electric motors are the universal brush dc, variable or switched reluctance, ac induction, and electronically controlled brushless synchronous or permanent magnet (PM) synchronous motor. The mature universal motor is a wound field motor that can be driven with ac or dc input voltage. It suffers from lower power efficiency. The brush dc motor in wound field and PM configurations has a limited operating life due to its mechanical commutation system.

New technology developments are primarily limited to the reluctance, induction, and brushless PM synchronous motor systems. More recently, combinations of these three motor technologies have also emerged.

Permanent magnet motor

The permanent magnet electric motor has the highest intrinsic power efficiency and leads the other motor technologies in its wide range of new technology candidates. The brushless permanent magnet synchronous motor (PMSM) has many names, including brushless dc motor, brushless PMAC motor, and electronic controlled motor (ECM).

Today’s PMSMs used in a wide range of applications have their magnets located on the cylindrical rotor surface. The latest new products in the servo positioning world have moved toward buried magnets in cylindrical spoke and interior permanent magnet (IPM) configurations. These buried magnet products incrementally increase torque or reduce size and weight in various precision positioning motion systems. Theses servo motors are finding use in machine tool, robots, and semiconductor equipment.

Axial flux motors

The transportation industry in the form of electric bicycle, scooter, motorcycle, and automobile is the target for new PMSM technology. Two excellent examples of new magnet locations are embodied in the axial flux and transverse flux PMSMs.

The axial flux PMSM (figure) has a unique disk shape that develops more torque than conventional cylindrical-shaped radial flux PMSMs. Its unique configuration fits into the center of drive wheels of most types of vehicles.

Axial flux motor provides high torque and low motor shaft speeds that eliminate the need for expensive gear boxes in many applications. The re-emergence of hybrid or electric driven vehicles has fostered a technical reassessment of axial flux motors for use in traction applications.

There are two major axial flux configurations: the internal PM rotor between two stator windings and the Torus that uses two rotors surrounding the nonmoving stator. The internal PM rotor is its most popular configuration. Transportation companies lead the research efforts along with many treatises created by university professors from around the world in evaluating, designing, and using these motor types. Chinese motor companies are making high volumes of hub axial flux motors for electric bicycles.

Our recent recession killed many of these start-up companies using in hub axial flux motors, but KLD Energy Technologies of Austin, Texas, is providing its 5 kw version axial flux in hub motors to scooter manufacturers. YASA Motors of Abington, UK, has developed its axial flux motors for larger vehicles using a slotless or yokeless stator to produce over 60 Nm (44 lb-ft) @ 3600 rpm (25 kw) and achieve a peak power efficiency of 96%. Almost all axial flux motors use the high-energy Neodymium-Iron-Boron magnets.

A more unique configuration of an axial flux PMSM is the NovaTorque (Sunnyvale, CA) PMSM. This axial flux PMSM has an axial length longer than its radial diameter. The NovaTorque rotor has a pair of conical hub assemblies consisting of ferrite magnets embedded in soft magnetic material in an IPM configuration. This configuration allows the low-cost ferrite magnets to achieve motor performance that matches or exceeds rare earth (Neodymium) magnets.

The rotor hub assemblies are positioned at each end of the rotor, and the motor flux flows straight (parallel to the shaft) through the axially oriented field poles of the stator. The conical-shaped rotor hub surfaces create a larger air gap area and resultant improved torque. NovaTorque’s first product, a 3 hp PMSM axial flux motor under the brand name Premium Plus+, develops 159 lb-in (18 Nm) @ 1800 rpm. NovaTorque’s industry focus is the fans, pumps, and compressors used in heating, ventilation, and air conditioning refrigeration (HVACR) products.

Transverse flux motors

The transverse flux motor possesses a complex magnetic circuit. While both radial flux and axial flux motors can be simulated with two-dimensional FEA and more direct mathematic models, the transverse flux motor requires three-dimensional FEA models due to its three-dimensional (3D) magnetic circuits. A ring-shaped stator winding is surrounded by a number of U-shaped magnetic elements. While the transverse flux motor was invented in 1896 by W.M. Morday, the applications that need its enhanced performance capability are emerging slowly due to its complicated structure and extra cost. The development of Neodymium magnets and soft magnetic composite materials has allowed Landert Motoren of Biilach, Switzerland, to develop a family of smaller transverse flux motors, the MDD1 series, with rated torque ranging from 3.3 Nm to 10 Nm @ 300 rpm (100 watts to 300 watts). Applications include rotary tables and other industrial machines.

South Korea’s Electric Research Institute (KERI) has been building various transverse flux motors for more than 10 years. Its mechatronics group has developed rotary and linear versions. Material transport systems were developed up to 1120 lbs-force (5000 N). The transverse flux motor can achieve a very high torque and power density along with a higher manufacturing cost. Its use is currently limited to special applications.

Hybrid cylindrical motors

The radial flux cylindrical motors are also developing new motor technologies by integrating permanent magnet (PM) with variable reluctance and PM with ac induction motors.

QM Power is the best example of a combination of motor technologies. The new QM Power Parallel Path Magnetic Technology (PPMT) combines VR and PM technology. There are two flux patterns developed and sharing the same motor magnetic elements, one from the two PMs and the other from the VR rotor-stator winding configuration. QM Power reports that magnetic force can typically be tripled resulting in a 30% increase in power density and a similar boost in peak efficiency. It is a scalable from 100 watts to hundreds of kilowatts.

The PPMT is aimed at both constant speed and variable speed applications including traction drives. PPMT retains higher power efficiency in higher load conditions. It can achieve excellent performance with ferrite magnets.

Another example of hybrid motor technology is the line start ac induction motor that combines a squirrel cage rotor with a PM magnet cage (usually ferrite type) to significantly improve the ac motor’s power efficiency. Lafert Corp. of Venice, Italy, has a family of industrial and commercial line start ac motors ranging from 1 kw to 15 kw with peak efficiency ratings boosted by 5% to 8%.

Simulation tools

Many of these “new” motor technologies awaited the development of new drive and control electronics, new magnets, and new insulation materials. New simulation tools aid the design of these new motor technologies.

The need for higher torque density, power density, and energy-efficiency motors and generators matches the need for new hybrid and electric vehicle drive motors, new more efficient generators, and smaller and more efficient smart HVACR products. Product cost versus motor and generator performance must be carefully matched to applications needs.