To conclude this section, Figure 7 shows (a) an omnidirectional image captured by the catadioptric system presented in Figure 2(a) and the visual appearance of the projections calculated from this image: (b) unit sphere projection, (c) cylindrical projection, (d) perspective projection onto a vertical plane, and (e) orthographic projection.
Caption: FIGURE 6: Projection model of the orthographic projection.
Caption: FIGURE 7: (a) Sample omnidirectional image and some projections calculated from it: (b) unit sphere projection, (c) cylindrical projection, (d) perspective projection onto a vertical plane, and (e) orthographic projection.
They include the spherical, cylindrical, or orthographic projections [25, 28].
* Explain the reason for the location of views on an object in an orthographic projection.
* Apply the conventions of an orthographic projection to create an accurate model.
Have the students re-create the orthographic projection into a 3D model using the supplies they brought in and tools provided.
Pupils will be given a brief to design a futuristic F-1 car, using PTC's Pro/DESKTOP software package, in addition to producing supporting evidence of their concept such as
orthographic projections, colour isometric drawings and three-dimensional rendering.
Even in a 3D scenario, the end result is 2D
orthographic projections arranged and noted on paper.
Scarpa condenses conventional categories -- sketch, working, shop and presentation drawings -- onto single sheets with meticulously drafted
orthographic projections worked and reworked in many freehand layers and surrounded by sketches of perspective views and construction details.
Mylar film or drafting vellum can be used to draw
orthographic projections of the casting to better visualize all elevations.