concealed portrait under patch of grass painting
{"Image ImageDescription": "In this undated composite image  provided  by the Delft University of Technology, Netherlands, Wednesday, July 30, 2008, a hidden portrait under the Vincent van Gogh painting ''Patch of Grass'' from 1887, is seen. European scientists say they have developed a new method for extracting images hidden under old masters' paintings without harming them, and have unveiled a color portrait of a woman's face unseen since Vincent van Gogh painted over it in 1887. Joris Dik is a materials scientist from Delft University in the Netherlands. He says he used a particle accelerator and knowledge of metals in 19th century paint pigments to examine \"Patch of Grass,\" a small oil study of a field that Van Gogh painted in Paris. (AP Photo/TU DELFT) ** EDITORIAL USE ONLY NO SALES **", "Image Software": "Google"}