` ` Still life with meadow flowers and roses '' identified as work of unknown artist . Large format , subject , and signature all pointed to painting being by someone other than Van Gogh . New high - tech X - ray imaging revealed underpainting of paint , details of pigments used . ` The painting was x-rayed before , so we knew there was something underneath , but the image was not very clear , '' he told CNN . Experts say they are now confident that the piece is definitely by ` ` Sunflowers '' artist Van Dyke .
` ` Still life with meadow flowers and roses '' identified as work of unknown artist . Large format , subject , and signature all pointed to painting being by someone other than Van Gogh . New high - tech X - ray imaging revealed underpainting of paint , details of pigments used . Experts say they are now confident that the piece is definitely by ` ` Sunflowers '' artist Van Dyke .