The nose on your face may not be so plain: Using the nose as a biometric
(2009)
Presentation / Conference Contribution
Outputs (137)
Concealed object perception and recognition using a photometric stereo strategy (2009)
Presentation / Conference Contribution
Following a review of current hidden objects detection techniques in a range of security applications, a strategy based on an innovative, low-cost photometric stereo technique is proposed to reveal concealed objects. By taking advantage of informatio... Read More about Concealed object perception and recognition using a photometric stereo strategy.
Facial geometry estimation using photometric stereo and profile views (2009)
Presentation / Conference Contribution
Two-dimensional BRDF estimation from polarisation (2008)
Journal Article
This paper presents a novel technique for reflectance function (BRDF) estimation, which uses polarisation information and photometric stereo. The first stage of the technique is standard and involves the acquisition of polarisation information (angle... Read More about Two-dimensional BRDF estimation from polarisation.
Reflectance of human skin using colour photometric stereo: With particular application to pigmented lesion analysis (2008)
Journal Article
Background/purpose: The optical appearance of human skin is highly dependent on the interaction between the illumination (type and position), observer position and the skin surface structure. Different currently available photographic techniques reco... Read More about Reflectance of human skin using colour photometric stereo: With particular application to pigmented lesion analysis.
Shape estimation using polarization and shading from two views (2007)
Journal Article
This paper presents a novel method for 3D surface reconstruction that uses polarization and shading information from two views. The method relies on polarization data acquired using a standard digital camera and a linear polarizer. Fresnel theory is... Read More about Shape estimation using polarization and shading from two views.
Improving the human readability of features constructed by genetic programming (2007)
Presentation / Conference Contribution
Examining the uncertainty of the recovered surface normal in three light photometric stereo (2007)
Journal Article
Although the three light photometric stereo technique has been used in many applications, there is little published work concerned with characterizing the uncertainty of these systems due to the involvement of a number of complicating factors. This p... Read More about Examining the uncertainty of the recovered surface normal in three light photometric stereo.
Object surface recovery using a multi-light photometric stereo technique for non-Lambertian surfaces subject to shadows and specularities (2007)
Journal Article
This paper presents a new multi-light source photometric stereo system for reconstructing images of various characteristics of non-Lambertian rough surfaces with widely varying texture and specularity. Compared to the traditional three-light photomet... Read More about Object surface recovery using a multi-light photometric stereo technique for non-Lambertian surfaces subject to shadows and specularities.
Recovery of surface orientation from diffuse polarization (2006)
Journal Article
When unpolarized light is reflected from a smooth dielectric surface, it becomes partially polarized. This is due to the orientation of dipoles induced in the reflecting medium and applies to both specular and diffuse reflection. This paper is concer... Read More about Recovery of surface orientation from diffuse polarization.
Simulation of an optical-sensing technique for tracking surgical tools employed in computer-assisted interventions (2005)
Journal Article
Establishing the accuracy of optical-sensing systems for tools used in surgical procedures is an essential and nontrivial task. This paper shows that an optical-tracking system may be regarded as a cooperative system in that its accuracy is related n... Read More about Simulation of an optical-sensing technique for tracking surgical tools employed in computer-assisted interventions.
GAP: Constructing and selecting features with evolutionary computing (2004)
Book Chapter
Using genetic programming for feature creation with a genetic algorithm feature selector (2004)
Presentation / Conference Contribution
A knowledge-based system for powder metallurgy technology (2003)
Book
Published as part of the highly successful Engineering Research Series , A Knowledge–Based System for Powder Metallurgy Technology not only looks at the latest advances in powder metallurgy, but also presents a methodology that offers a means to pres... Read More about A knowledge-based system for powder metallurgy technology.
Computer simulation of morphology and packing behaviour of irregular particles, for predicting apparent powder densities (1997)
Journal Article
This paper describes a methodology for prediction of powder packing densities which employs a new approach, designated as random sphere construction (RSC), for modelling the shape of irregular particles such as those produced by water atomization of... Read More about Computer simulation of morphology and packing behaviour of irregular particles, for predicting apparent powder densities.
High-precision polarization measurements and analysis for machine vision applications
Presentation / Conference Contribution
Polarization is a source of information that is steadily attracting attention in the field of computer vision due to its ability to tap into information not readily available in standard colour or greyscale cameras. Unfortunately, most existing data... Read More about High-precision polarization measurements and analysis for machine vision applications.
Expressing facial structure and appearance information in frequency domain for face recognition
Report
Beneath the uncertain primitive visual features of face images are the primitive intrinsic structural patterns (PISP) essential for characterizing a sample face discriminative attributes. It is on this basis that this paper presents a simple yet effe... Read More about Expressing facial structure and appearance information in frequency domain for face recognition.