We want our image to be understand by the viewers. These are the principles to make the image effective:
1. Identify the design principles
design principles: unity/harmony, balance, hierarchy, scale/proportion, dominance/emphasis, similarity and contrast.
art elements: colour, shape, texture, space, form
→ how it can affect the viewers’ perception and information displayed. For example, cropping the image on different place can convey different meaning to the viewers.
→ use hand-drawn to do the concept thumbnail (some people might prefer to show the visualisation through hand-drawn skteches rather than describing the design principles)
2. Instantiate design principles
→ understand the information behind the visualisation
→ gathering all the information (other than the information about the design principles) that can be used
→ make the best use of the available design space
3. Evaluate design principles
→ we need to measure the usefulness of the visualisation
→ checking how the visualisation improve information processing, communication, and decision making.