Dimension/Depth/Space/Scale

In this picture, the first and most noticeable aspect is the establishment of the viewing eye level in dimension.  Dimension depends partially on the angle at which the viewer observes whatever he is viewing.  In this case the viewer is looking down onto the cushions and, further back, onto the sofa in the background.  Photography in particular makes distinctive use of perspective as a tool in portraying the flavor of a picture to an audience.  Shooting a picture from an angle makes up for the narrower range of vision (versus the wide range of peripheral vision that eye encompasses).  In this particular picture, the camera is angled to highlight the sunflower-looking cushions on the floor.  In the picture, these cushions are like the main course, and the sofa is the desert afterward.  The more obvious aspect of dimension here is that the cushions are in front and the sofa is in back, so it appears smaller in comparison.  However the viewer would probably determine that relatively, the sofa is probably not as small as it appears here.  This is part of how the actual space of the room was manipulated through the lens of a camera when it became this 2-dimensional picture: the representation of 3D in a 2D visual format is a manipulation of space; it is an illusion. 

A second element in play is the element of scale.  "All visual elements have the capacity to modify and define each other.  The process, itself, is the element of scale" (Dondis, 56).  In scale, everything is relative to each other because the elements that make up scale can change and warp depending on the complete picture, surrounding elements, and the juxtaposition of these elements to each other.  Therefore, scale is not absolute, and it changes.  In this particular picture, color is juxtaposed against other colors to create a clash and a 'wow' effect from the seeming brightness of the colors (when in fact they may not be so bright-looking by themselves). Although scale does not depend on measurement, it is aided by it--and in this picture, the mean measurement tool seemed to be the human being.  Everything is sized to the proportions of an average-sized adult person.  

http://www.dezeen.com/2008/12/05/takashi-murakami-at-design-miami/