Results

Woman

Figure 1. Original Woman

Figure 2. Demosaicked Woman using Bilinear Interpolation

 

Figure 3. Demosaicked Woman using PCSD

Figure 4. Demosaicked Woman using Alternating Projections

Observations:

Sharpness: The overall image looks the sharpest when PCSD is used as the demosaick algorithm (Figure 3).

Color Dots Artifact: Red and blue color dot artifacts are seen in various regions in the Alternating Projections demosiacked image (Figure 4) at light/dark color boundaries. For example, the hair of the woman and the coffee cup. It is interesting to notice that when the color transition is from a lighter color to a darker color, from left to right, then blue dots are seen. If the color transition is from dark to light, from left to right, then red color dots are observed.