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All Outputs (23)

Cultural discourse, colour heritage and communication (2013)
Presentation / Conference
Parraman, C., & Mottram, J. (2013, July). Cultural discourse, colour heritage and communication. Paper presented at AIC 2013, Newcastle-upon-Tyne, UK

Our current digital technologies are as much a part of the cultural heritage of tomorrow as are the material objects we create and the discourses and narratives that bind theory and practice. In this fast moving technological environment, with increa... Read More about Cultural discourse, colour heritage and communication.

Reproduction of texture in digitally printed artworks (2013)
Presentation / Conference
Hoskins, S., Parraman, C., Mccallion, P., & Cohen, C. (2013, July). Reproduction of texture in digitally printed artworks. Paper presented at AIC 2013, Newcastle-upon-Tyne

This paper considers alternative approaches to image making and printing that moves from the on-screen representation of images and painting applications, to the physical generation and methods for surface deposition or 2.5D printing. The research in... Read More about Reproduction of texture in digitally printed artworks.

Exploration of alternative print methodology for colour printing through the multi‐layering of ink (2013)
Presentation / Conference
Parraman, C., & Olen, M. (2013, July). Exploration of alternative print methodology for colour printing through the multi‐layering of ink. Paper presented at AIC 2013, Newcastle-upon-Tyne

This paper explores the application of artist driven colour mixing and multi-layering of pigments using inkjet printing. A standardised colour managment workflow is essential for predicable and repeatable colour for inkjet printing. With the correct... Read More about Exploration of alternative print methodology for colour printing through the multi‐layering of ink.

New findings to colour changes in prints during long-term dark storage of prints (2010)
Presentation / Conference
Parraman, C. (2010, May). New findings to colour changes in prints during long-term dark storage of prints. Paper presented at 4th International Conference on: Preservation and Conservation Issues in Digital Printing and Digital Photography, Institute of Physics, London

The most important impact on colour fading in prints is exposure to light and air. However what happens to coloured prints during long-term storage in boxes, drawers and on shelves? In short very little, but changes do occur. Measurements to samples,... Read More about New findings to colour changes in prints during long-term dark storage of prints.

Developments in the recovery of colour in fine art prints through spatial image processing methods (2010)
Presentation / Conference
Parraman, C., & Rizzi, A. (2010, May). Developments in the recovery of colour in fine art prints through spatial image processing methods. Paper presented at 4th International Conference on: Preservation and Conservation Issues in Digital Printing and Digital Photography, Institute of Physics, London

Printmakers have at their disposal a wide range of colour printing processes. The majority of artists will utilise high quality materials with the expectation that the best materials and pigments will ensure image permanence. However, as many artists... Read More about Developments in the recovery of colour in fine art prints through spatial image processing methods.

Spatial image processing for the enhancement and restoration of film, photography and print (2010)
Presentation / Conference
Parraman, C., & Rizzi, A. (2010, March). Spatial image processing for the enhancement and restoration of film, photography and print. Paper presented at 7th International Conference on Informatics and Systems, Faculty of Computers and Information, Cairo University

This paper presents a review of research undertaken into algorithms for colour enhancement methods based on the behaviour of the human vision system and the applied research in film, photography and print. These colour enhancements methods perform au... Read More about Spatial image processing for the enhancement and restoration of film, photography and print.

The development of artists' novel colour palettes for inkjet printing (2010)
Presentation / Conference
Parraman, C. (2010, January). The development of artists' novel colour palettes for inkjet printing. Paper presented at IS&T/SPIE Electronic Imaging conference, San Jose, USA

In this changing environment in which the artist and designer has access to a wide range of digital imaging tools and technologies, that on first glance, are dedicated to the creation of colour mixtures, why is the digital interface and colour outcom... Read More about The development of artists' novel colour palettes for inkjet printing.

Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments (2010)
Presentation / Conference
Parraman, C., McCann, J., & Rizzi, A. (2010, January). Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments. Paper presented at IS&T/SPIE Electronic Imaging conference, San Jose, USA

The presentation provides an update on ongoing research using three-dimensional Colour Mondrians. Two still life arrangements comprising hand-painted coloured blocks of 11 different colours were subjected to two different lighting conditions of a nea... Read More about Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments.

Colour appearance and colour rendering of HDR scenes: an experiment (2010)
Presentation / Conference
Parraman, C., McCann, J., & Rizzi, A. (2010, January). Colour appearance and colour rendering of HDR scenes: an experiment. Paper presented at IS&T/SPIE Electronic Imaging conference, San Jose, USA

In order to gain a deeper understanding of the appearance of coloured objects in a three-dimensional scene, the research introduces a multidisciplinary experimental approach. The experiment employed two identical 3-D Mondrians, which were viewed and... Read More about Colour appearance and colour rendering of HDR scenes: an experiment.

Pixel and spatial mechanisms of colour constancy (2010)
Presentation / Conference
Parraman, C., McCann, J., & Rizzi, A. (2010, January). Pixel and spatial mechanisms of colour constancy. Paper presented at IS&T/SPIE Electronic Imaging conference, San Jose, USA

Colour constancy remains an important subject of research on colour standards, computer imaging, and human color vision. There are many different theories and algorithms that interpret and predict constancy. This paper analyzes three different approa... Read More about Pixel and spatial mechanisms of colour constancy.

Measuring colour constancy and colour appearance: An experiment (2009)
Presentation / Conference
Rizzi, A., Parraman, C., & McCann, J. (2009, November). Measuring colour constancy and colour appearance: An experiment. Paper presented at MINET (Measuring the Impossible Network) Conference: Measurement, sensation and cognition, National Physical Laboratory, London

Paper given at Perception and Sensation Session 3. Colour sensation does not depend strictly of the light signal conveying colour information, but also depends on the arrangement of the visual array of all signals coming from the scene. Colour cons... Read More about Measuring colour constancy and colour appearance: An experiment.

Reflectance, illumination and edges (2009)
Presentation / Conference
McCann, J., Parraman, C., & Rizzi, A. (2009, November). Reflectance, illumination and edges. Paper presented at Seventeenth Color Imaging Conference: Color Science and Engineering Systems, Technologies, and Applications, Albuquerque, New Mexico

We studied color constancy using a pair of 3-D Color Mondrian displays made of two identical sets of painted wooden shapes. There are only 6-chromatic, and 5-achromatic paints applied to nearly 100 block facets. The three-dimensional nature of these... Read More about Reflectance, illumination and edges.

Reflectance, illumination, and edges in 3-D Mondrian colourconstancy experiments (2009)
Presentation / Conference
McCann, J., Parraman, C., & Rizzi, A. (2009, September). Reflectance, illumination, and edges in 3-D Mondrian colourconstancy experiments. Paper presented at 11th Congress of the International Colour Association (AIC) 2009, University of New South Wales, Sydney, Australia

AIC 2009 Proceedings published as CD-Rom Proceedings of the 11th Congress of the International Colour Association (AIC 2009), edited by Dianne Smith, Paul Green-Armytage, Margaret A. Pope and Nick Harkness. CD. Sydney: Colour Society of Australia

Does this look right? The science of colour appearance in art (2009)
Presentation / Conference
Parraman, C. (2009, June). Does this look right? The science of colour appearance in art. Presented at Science Café, Explore, Bristol

Invited lecture for Science Café given at Explore, At-Bristol, 9 June 2009. Have you considered why the swatch colour you take to the paint shop appears very different to the final painted wall? Differences between how a colour is measured and how... Read More about Does this look right? The science of colour appearance in art.

HDR and Color Constancy - new psychophysical results (2009)
Presentation / Conference
Parraman, C., McCann, J., & Rizzi, A. (2009, January). HDR and Color Constancy - new psychophysical results. Presented at Google Tech Talk, Online

Presentation Google Tech Talks January 22, 2009

On determining the color gamut of N-ink printers (2009)
Presentation / Conference
Parraman, C., & Wang, Y. (2009, January). On determining the color gamut of N-ink printers. Paper presented at IS&T/SPIE 21st Annual Symposium, San Jose Marriott and San Jose Convention Center, San Jose, California, USA

Paper given at Session 7: Spectral Imaging [7241-32]. With the development of digital printing technologies, increasing number of primaries are adopted in colour reproduction systems aiming to improve the quality of the print, in particular, to achi... Read More about On determining the color gamut of N-ink printers.

The art and science of colour: Bridging the gap between art and perception (2008)
Presentation / Conference
Parraman, C., & Rizzi, A. (2008, November). The art and science of colour: Bridging the gap between art and perception. Paper presented at CHArt Conference (Computers and the History of Art 24th Annual Conference), Birkbeck, University of London

The paper considers the relation between the art and science of colour perception and how computational procedures, which mimic our visual system, have been developed to advance digital imaging techniques for the enhancement of colour and image quali... Read More about The art and science of colour: Bridging the gap between art and perception.

Pixel perfect - working with CMYK & RGB - A comparison of printed samples (2008)
Presentation / Conference
Parraman, C., Laidler, P., & Wang, Y. (2008, October). Pixel perfect - working with CMYK & RGB - A comparison of printed samples. Presented at 'New Ways to use Print Technology ...On Paper', University of the West of England, Bristol

This workshop compared different pre-printed samples on a range of fine art materials, which range from Japanese papers to fine art canvas. These samples demonstrate a very broad range of surface qualities and differences in the gamut of the printed... Read More about Pixel perfect - working with CMYK & RGB - A comparison of printed samples.

Inkjet in question: Adapting current colour and ink technology for the requirements of the user (2007)
Presentation / Conference
Parraman, C. (2007, June). Inkjet in question: Adapting current colour and ink technology for the requirements of the user. Paper presented at Gjøvik Color Imaging Symposium 2007, Gjøvik, Norway

This paper is an overview on the current application of inkjet and it’s, as to yet considered unfulfilled potential, which as a technology, is as revolutionary as Caxton’s printing press; and a presentation of an approach to develop inkjet from the p... Read More about Inkjet in question: Adapting current colour and ink technology for the requirements of the user.