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Limitation: aliasing on almost cardinal high-contrast edges

We analyze the antialiasing behavior of our algorithm on a rotating edge of varying contrast (you can change both values below). This reveals one of our algorithm's limitations: there are some remaining staircase effect on high contrast edges.

Slope:
0°
    
5°
    
10°
    
15°
    
20°
    
25°
    
30°
    
35°
    
40°
    
45°
Contrast:
10%
    
20%
    
30%
    
40%
    
50%
    
60%
    
70%
    
80%
    
90%
    
100%






Input, 5° slope, 100% contrast Bicubic, 5° slope, 100% contrast Ours, 5° slope, 100% contrast