Contextualized text explanations for visualizations

According to the multimedia design principle of spatial contiguity, presenting text explanations for visualizations within the image space improves the users' ability to make referential links between the text and its corresponding objects. In this paper we introduce a concept of Dual-Use of Image Space (DUIS) and we show how the concept presents text explanations for visualizations within the image space without obstructing the image. In DUIS the pixels are used both as shading information for the objects as well as text which can be read.The following are other benefits of DUIS: (1) It provides a mechanism to help user compare information for different objects with minimum cognitive burden (2) By using the same space for both the image and text the concept uses the screen real estate efficiently.

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