06-01-2014, 03:57 PM
COLOR LOCAL TEXTURE FEATURES FOR COLOR FACE RECOGNITION
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ABSTRACT
This paper proposes new color local texture features, i.e., color local
Gabor wavelets (CLGWs) and color local binary pattern (CLBP), for
the purpose of face recognition (FR).
The proposed color local texture features are able to exploit the
discriminative information derived from spatiochromatic texture
patterns of different spectral channels within a certain local face
region.
Furthermore, in order to maximize a complementary effect taken by
using both color and texture information, the opponent color texture
features that capture the texture patterns of spatial interactions
between spectral channels are also incorporated into the generation of
CLGW and CLBP.
In addition, to perform the final classification, multiple color local
texture features (each corresponding to the associated color band) are
combined within a feature-level fusion framework.
Extensive and comparative experiments have been conducted to
evaluate our color local texture features for FR on five public face
databases, i.e., CMU-PIE, Color FERET, XM2VTSDB, SCface, and
FRGC 2.0. Experimental results show that FR approaches using color
local texture features impressively yield better recognition rates than
FR approaches using only color or texture information.
ABOUT EMBEDDED SYSTEMS
An embedded system is a computer system designed for specific control functio ns within a
larger system, often with real-time computing constraints. It is embedded as part of a complete
device often including hardware and mechanical parts. By contrast, a general -purpose computer,
such as a personal computer (PC), is designed to be f lexible and to meet a wide range of end-
user needs. Embedded systems control many devices in common use today
Embedded systems contain processing cores that are typically either microcontrollers or digital
signal processors. The key characteristic, however , is being dedicated to handle a particular
task. Since the embedded system is dedicated to specific tasks, design engineers can optimize
it to reduce the size and cost of the product and increase the reliability and performance.
Embedded systems are designed to do some specific task, rather than be a general -purpose
computer for multiple tasks. Some also have real -time performance constraints that must be
met, for reasons such as safety and usability
Embedded systems are not always standalone devices. Many embedded systems consist of
small, computerized parts within a larger device that serves a more general purpose. The
program instructions written for embedded systems are referred to as firmware, and are stored
in read-only memory or Flash memory chips. They run with limited computer hardware
resources: little memory, small or non-existent keyboard or screen.
MICROCONTROLLERS
A microcontroller (sometimes abbreviated μC, uC or MCU) is a small computer on a single
integrated circuit containing a processor core, memory, and programmable input/output
peripherals. Program memory in the form of NOR flash or OTP ROM is also often included on
chip, as well as a typically small amount of RAM.
Microcontrollers are designed for embedded applications, in contrast to the microprocessors
used in personal computers or other general purpose applications.
Microcontrollers are used in automatically controlled products and devices, such as automobile
engine control systems, implantable medical devices, remote controls, office machines,
appliances, power tools, toys and other embedded systems. By reducing the size and cost
compared to a design that uses a separate microprocessor, memory, and input/output devices,
microcontrollers make it economical to digitally control even more devices and processes
ATMEL 89C51 MICROCONTROLLERS
The Atmel AT89 series is an Intel-8051-compatible family of 8 bit microcontroll ers (μCs)
manufactured by the Atmel Corporation. Based on the Intel 8051 core, the AT89 series remains
very popular as general purpose microcontrollers, due to their industry standard instruction set,
and low unit cost. This allows a great amount of legacy code to be reused without modification in
new applications
The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4Kbytes of
Flash programmable and erasable read only memory (PEROM). The device is manufactured
using Atmel’s high-density nonvolatile memory technology and is compatible with the industry -standard MCS-51 instruction set and pin out.