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History re-photographed: This is a project to restore original greyscale images so that they contain a fair representation of the original colour content. A number of algorithms have been developed and some are continually being improved. The mathematical analysis and the necessary algorithms are the intellectual property of Robin Marshall and hence the colour component of the images here are copyright. Licences are avaiable for commercial use. Private use, beyond viewing the images on this web page is not permitted.To see a larger version, click on the image. All images are availabl at higher resolution, from 1600 pixels on the longest edge to over 3000 in some cases.


Edward Frankland in Colour This restored photograph of Edward Frankland, the chemist who discovered valency during his tenure as Chemistry Professor at Owens College, is one of the most pleasing results and could be mistaken for an Ektachrome.
Edward Frankland in Colour Another portrait of Edward Frankland.










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