Abstract: Immersive projection technologies surrounding users with large and high quality images are fundamental elements in our near-future information society. However, such large projection systems are frequently based on large implementation and high-cost components like a special projector and screen. This situation limits users receiving the benefits with those technologies. Therefore, in this paper, we propose a technique for changing our living room into an immersive projection environment. The surrounding images are projected with simple projection units with a convex mirror and projectors. The projected images are properly corrected in order to reduce geometric and luminance distortions. Pseudo wide viewangle images generated with standard-sized images also leverage the projection environment effectively as our accessible entertainment space. This paper describes each technique of those, and shows some results.