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. 2008 Sep 15;8(9):5673–5744. doi: 10.3390/s8095673

Table 5.

Comparison of the ‘conventional two camera’ approach and the ‘filter wheel approach’ detection for the two-mode intensity method.

Two camera Filter Wheel + Single camera
Schematic graphic file with name sensors-08-05673u1.jpg graphic file with name sensors-08-05673u2.jpg
Signal capture This system measures signals simultaneously. This system measures both signals sequentially. Software is used separates out individual signals.
Alignment between images Physical 3D alignment is required and errors may be induced. The same camera and its position can eliminate many errors caused by alignment and CCD defects.
Mechanics No moving parts Reliable mechanical parts are required with repeatability to enable good signal separation.
Other Flat field correction is required.