Size of White Test Targets

 
Figure 23.1 demonstrates the change in lightness with luminance of the central test square in a uniform white surround.

[1500 by 314 pixels]    23.1.tif




Figure 23.2 demonstrates the change in lightness with luminance of the surround around a constant test square. The experimenters set the constant central patch (digital value 140) and varied the surround.

[1500 by 314 pixels]    23.2.tif




Figure 23.3 shows the Snow targets with constant image statistics.

[3332 by 2302 pixels]    23.3.tif





Figure 23.5 shows the Sides targets (top), and the Corners target (bottom).

[1497 by 511 pixels]     23.5.tif



Figure 23.7 Relocation of the 2112 white pixels into parallel stripes with variable spacing.

[833 by 560 pixels]     23.7.tif




Figure 23.8 shows eight different displays with Matching Munsell Value = 7.0.

[1377 by 750 pixels]     23.8.tif


Wiley Figures

 

The following files are full resolution .tif files that were used to make the test targets described in Chapter 23. They contain many small white areas that require high resolution images.