The Colour Group intends to make research data and code publicly available via this page where appropriate. Below we have provided links to data and code which is currently available online.

Uncalibrated Colour Image Database

Please click the links below to download zip files.

Camera 1 (Fuji Mx-700): Illuminant A - Daylight D65 - Fluorescent TL84

Camera 2 (Sanyo low-end): Illuminant A - Daylight D65 - Fluorescent TL84

Camera 3 (Agfa Studiocam): Illuminant A - Daylight D65 - Fluorescent TL84

Camera 4 (Canon Powershot Pro 70): Illuminant A - Daylight D65 - Fluorescent TL84

Scanner 1 (Agfa Studio IITM)

Scanner 2 (Agfa SnapScan 310)

High Dynamic Range Images

This page provides the images used in the following publications:

  1. G. D. Finlayson, S. D. Hordley and M. S. Drew, Removing Shadows from Images. In Proceedings of the Seventh European Conference on Computer Vision, Volume 4, pages 823-834, 2002.
  2. G. D. Finlayson, S. D. Hordley and M. S. Drew, Removing Shadows from Images using Retinex. In Proceedings of the Tenth Color Imaging Conference, pages 73-79, 2002.
  3. M. S. Drew, Chao Chen, S. D. Hordley and G. D. Finlayson, Sensor Transforms for Invariant Image Enhancement. In Proceedings of the Tenth Color Imaging Conference, pages 325-330, 2002.

There are 11 images in 16 bit tiff format although the image data is only 12 bit (digital counts range from 0 to 4095). The images were recorded with a HP 912 Digital Still Camera and have been demosaiced. Digital counts should be approximately linear with respect to light intensity. No processing beyond demosaicing and linearisation was performed on the images. Download the images.

For further information about the images please contact Prof. Graham Finlayson.

Permission to use the images is granted subject to the condition that any publications in which the images are used (or which contains details of work for which the images were used) cites this web page and any appropriate publications.

Multispectral Image Database

Click on the images below for a MATLAB .mat file containing full spectral resolution reflectance data from 400nm to 700nm at 10nm steps (31 samples). The image matrix for each object is 31xWIDTHxHEIGHT. The images have been captured in a VeriVide viewing booth with a black cloth background under CIE illuminant D75. Each image has been captured twice: once with a white tile and once without. The illuminant has been estimated from the white tile and the spectral data divided by this estimate, in order to arrive at reflectance measurements. The images below are displayed sRGB values rendered under a neutral daylight (D65). A more detailed description of the data set and the device used to capture it can be found in:

  • Hordley, Finlayson, Morovic, A Multi-Spectral Image Database and an Application to Image Rendering Across Illumination, In Proceedings of Thrid International Conference on Image and Graphics, Hong-Kong, China, December 2004
  • Finlayson, Hordley, Morovic, Using the SpectraCube to Build a Multispectral Image Database, In Proceedings of IS&T European Conference on Graphics, Imaging and Vision, Aachen, Germany, April 2004