Figure 1From: Computer-assisted analysis of painting brushstrokes: digital image processing for unsupervised extraction of visible features from van Gogh’s worksPatches of 512×512 pixels extracted from van Gogh paintings of the image set used for the study. These were used with the permission of the Van Gogh Museum Amsterdam (Vincent van Gogh Foundation). (a) Self-portrait, 1887 to 1888. (b) Olive grove, June 1889. (c) Wheatfield with crows, July 1890. (d) A pair of leather clogs, 1889.Back to article page