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An improved photometric stereo through distance estimation and light vector optimization from diffused maxima region (2014)
Journal Article
Ahmad, J., Sun, J., Smith, L., & Smith, M. (2014). An improved photometric stereo through distance estimation and light vector optimization from diffused maxima region. Pattern Recognition Letters, 50, 15-22. https://doi.org/10.1016/j.patrec.2013.09.005

© 2013 Elsevier B.V. All rights reserved. Although photometric stereo offers an attractive technique for acquiring 3D data using low-cost equipment, inherent limitations in the methodology have served to limit its practical application, particularly... Read More about An improved photometric stereo through distance estimation and light vector optimization from diffused maxima region.

Illumination normalization for edge-based face recognition using the fusion of RGB normalization and gamma correction (2014)
Conference Proceeding
Olisah, C., Sulong, G., Chude-Okonkwo, U. A. K., & Hashim, S. Z. M. (2014). Illumination normalization for edge-based face recognition using the fusion of RGB normalization and gamma correction. In 2013 IEEE International Conference on Signal and Image Processing Applications (412-416). https://doi.org/10.1109/ICSIPA.2013.6708042

In this paper, an illumination normalization technique for edge-based face recognition on face images with non-uniform illumination conditions, is proposed. The proposed illumination normalization technique fuses the merits of color (Red, Green and B... Read More about Illumination normalization for edge-based face recognition using the fusion of RGB normalization and gamma correction.

Photometric stereo reconstruction for surface analysis of mucosal tissue (2014)
Presentation / Conference
Emrith, K., Slabaugh, G., Poullis, A. P., Goves, C., & Smith, M. (2014, July). Photometric stereo reconstruction for surface analysis of mucosal tissue. Paper presented at Medical Image Understanding and Analysis 2014, City University London

We introduce photometric stereo reconstruction for surface analysis of mucosal tissue. Photometric stereo captures images of a surface from a single camera, but illuminated from different light sources. From the set of images, a detailed surface rec... Read More about Photometric stereo reconstruction for surface analysis of mucosal tissue.

Non contact pulmonary functional testing through an improved photometric stereo approach (2014)
Presentation / Conference
Ahmad, J., Sun, J., Smith, L., & Smith, M. (2014, July). Non contact pulmonary functional testing through an improved photometric stereo approach. Paper presented at Medical Image Understanding and Analysis 2014, City University London

A non-contact computer vision based system is developed for Pulmonary Functional Testing. The unique and novel features of the system are that it views the patients from both front and back and creates a 3D structure of the whole torso. By observing... Read More about Non contact pulmonary functional testing through an improved photometric stereo approach.

A novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model (2014)
Journal Article
Poullis, A., Groves, C., Slabaugh, G., Emrith, K., & Smith, M. (2014). A novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model. Gut, 63(S1), A46-A47. https://doi.org/10.1136/gutjnl-2014-307263.96

The American Society of Gastroenterology Endoscopy led Preservation and Incorporation of Valuable Endoscopy Innovations initiative has identified real time poly diagnosis as one of the next major technology driven changes in endoscopy (1). A number o... Read More about A novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model.

Paper type classification based on a new 3D surface texture measure (2014)
Journal Article
Malekmohamadi, H., Emrith, K., Pollard, S., Adams, G., Smith, M., & Simske, S. (2014). Paper type classification based on a new 3D surface texture measure. Electronics Letters, 50(8), 596-598. https://doi.org/10.1049/el.2013.2687

A novel three-dimensional (3D) surface texture measure (3DSTM) is presented based on the micro-geometry of paper surfaces to classify different paper substrates. This is useful to automatically determine whether a document is printed on the correct p... Read More about Paper type classification based on a new 3D surface texture measure.

Edge-based representation and recognition for surgically altered face images (2014)
Conference Proceeding
Chude-Olisah, C. C., Sulong, G. B., Chude-Okonkwo, U. A. K., & Hashim, S. Z. M. (2014). Edge-based representation and recognition for surgically altered face images. In 2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)https://doi.org/10.1109/icspcs.2013.6723974

Basically, plastic surgery procedure introduces skin texture variations between images of the same person (intra-face) thereby making recognition more difficult than in normal scenario. Since the shape of significant face features such as eyes, nose,... Read More about Edge-based representation and recognition for surgically altered face images.