China
Africa
Explore chapters and articles related to this topic
The new agency of distributed digital networks
Published in Linda Matthews, Design Strategies for Reimagining the City, 2022
The interrogation and manipulation of linear perspective's geometric underpinnings manifested in anamorphic techniques corresponding to a similar range of spectator viewpoints to those initiated by the contemporary webcam network. Both have profound consequences for viewer engagement. Early versions of linear perspective techniques include what Jurgis Baltrušaitis described as either ‘accelerated’ or ‘decelerated’ perspective.2 The two types of geometric distortions, operating perpendicular to the picture plane, were used to exploit linear perspective geometry by either increasing or decreasing the depth perception. Accelerated perspective was commonly used to construct 16th-century stage sets to counteract the theatre's spatial limitations, by contracting the sidewalls and raising the horizon to increase the illusion of distance. Conversely, decelerated perspective acted as a ‘brake’ on the vanishing point to make objects appear closer than they are by increasing the dimensions of distant elements. This illusory device is deployed in Michelangelo's Last Judgement in the Sistine Chapel, Rome, where the three horizontal rows in the painting become progressively larger towards the ceiling (Figure 4.1). The intention behind both of these types of anamorphic projection was to preserve an alignment with the linear perspectival representation of real space, rather than to contest it, and was thus complicit in this technique's overarching objective to collapse real with represented form.
Basic Perspective Terms
Published in Craig Attebery, The Complete Guide To Perspective Drawing, 2018
The picture plane is an imaginary window positioned between the viewer and the world (Figure 1.2). It is always 90° to the line of sight (the exception being anamorphic perspective). The orientation and shape of the picture plane defines the type of perspective. If the picture plane is perpendicular to the ground, objects are in one- or two-point perspective. If the picture plane is angled to the ground, objects are in three-point perspective. In four-, five-, and six-point perspective the picture plane is curved.
Computer-aided inverse panorama on a conical projection surface
Published in Inverse Problems in Science and Engineering, 2019
Inverse perspective, also called reverse perspective, diverge perspective or Byzantine perspective is a technique of perspective drawing where the further the objects are, the larger they are drawn [1,2]. That is due to the fact that the straight lines diverge against the horizon, unlike in a typical linear perspective, in which straight lines converge at the horizon. Technically, vanishing points of lines are placed outside the perspective image which gives the illusion that they are in front of it. The name Byzantine perspective comes from the use of this perspective in earlier Byzantine and Russian Orthodox painting of icons [2].The intention of using this form of perspective was to bring the viewer into the picture plane frame as a window into projected space. This aimed at including him/she in the action depicted as well as evening out the lack of discernment of detail of peripheral objects [3–5].