What is abstraction in painting? What is the difference between abstraction and visualization? How abstract?

Most people generally regard "abstraction" as a synonym for abstract painting in art, but it can refer to any object or image extracted from the real world, or other completely irrelevant concepts. In the most realistic sense, abstract painting is not really abstract. Robert stark, an artist at & ltbr & gt, wrote: "It's been ten years since I gave up the formal landscape painting and used a more direct expression to freely draw on the drawing paper without expressing the theme. I also developed a new vocabulary; Bright and dark, warm and cold, marking, strokes like the rhythm of the heart. Every day is a single test of painting ability. Every painting will be constantly changed, copied, erased or redrawn, as long as it remains in this studio ... "