TY - GEN
T1 - Weaving versus Blending
T2 - 3rd Symposium on Applied Perception in Graphics and Visualization, APGV 2006
AU - Hagh-Shenas, Haleh
AU - Interrante, Victoria
AU - Healey, Christopher
AU - Kim, Sunghee
PY - 2006
Y1 - 2006
N2 - In this poster we present the results of two experiments in which we seek insight into the fundamental information-carrying capacities of two alternative methods for encoding multivariate information using color: color blending and color weaving [1]. We begin with a baseline experiment, in which we assess participants' abilities to accurately read numerical data encoded via one of six different single-hued color scales defined via joint variations in saturation and luminance from 6 base colors (fig 1). To obtain the base colors, we selected six points evenly spaced about a circle of large constant saturation in the monitor gamut on a plane of constant luminance in the Lab color space (figure 2). From our first experiment, we were able to determine the average baseline level of accuracy that participants were able to achieve on the color matching task when asked to match a single color. In our main experiment, we assessed participants' abilities to read combinations of 2, 3, 4 and 6 different data values simultaneously represented across a common region of the domain, encoded using either color blending, in which a single mixed color is formed via linear combination of the individual component colors, defined in Lab space (figure 3), or color weaving, in which the individual component colors appear side-by-side in a high frequency texture that fills the region (figure 4). Participants' viewing distance was restricted so that the blocks of constant color within this texture would subtend either 3 or 6 minutes of visual angle. Our results indicate that performance was significantly better when the original color information was available via the high frequency texture than when the colors were blended (fig 5), and that this difference increased with the number of components.
AB - In this poster we present the results of two experiments in which we seek insight into the fundamental information-carrying capacities of two alternative methods for encoding multivariate information using color: color blending and color weaving [1]. We begin with a baseline experiment, in which we assess participants' abilities to accurately read numerical data encoded via one of six different single-hued color scales defined via joint variations in saturation and luminance from 6 base colors (fig 1). To obtain the base colors, we selected six points evenly spaced about a circle of large constant saturation in the monitor gamut on a plane of constant luminance in the Lab color space (figure 2). From our first experiment, we were able to determine the average baseline level of accuracy that participants were able to achieve on the color matching task when asked to match a single color. In our main experiment, we assessed participants' abilities to read combinations of 2, 3, 4 and 6 different data values simultaneously represented across a common region of the domain, encoded using either color blending, in which a single mixed color is formed via linear combination of the individual component colors, defined in Lab space (figure 3), or color weaving, in which the individual component colors appear side-by-side in a high frequency texture that fills the region (figure 4). Participants' viewing distance was restricted so that the blocks of constant color within this texture would subtend either 3 or 6 minutes of visual angle. Our results indicate that performance was significantly better when the original color information was available via the high frequency texture than when the colors were blended (fig 5), and that this difference increased with the number of components.
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U2 - 10.1145/1140491.1140541
DO - 10.1145/1140491.1140541
M3 - Conference contribution
AN - SCOPUS:34250753722
SN - 1595934294
SN - 9781595934291
T3 - Proceedings - APGV 2006: Symposium on Applied Perception in Graphics and Visualization
SP - 164
BT - Proceedings - APGV 2006
Y2 - 28 July 2006 through 29 July 2006
ER -