Figure 6. Balanced detection compressive imaging.

(a) comparison between the correlation coefficient of several images with a reference lossless image in both balanced and non-balanced approaches. Vertical and horizontal dotted lines are included to ease the comparison between both approaches. For the same compression ratio, the balanced approach provides higher fidelity. In order to get the same quality, the non-balanced approach needs to perform more acquisitions. In (b) we show both reference images for balanced and non-balanced imaging, and different undersampled images (with 10%, 50% and 90% compression ratios).