Fig. 3: Diagram demonstrating par-sampling and over-sampling by 2, 5 and 10 over a 12 × 12 mm area. | npj Imaging

Fig. 3: Diagram demonstrating par-sampling and over-sampling by 2, 5 and 10 over a 12 × 12 mm area.

From: In vivo imaging using surface enhanced spatially offset raman spectroscopy (SESORS): balancing sampling frequency to improve overall image acquisition

Fig. 3

A Laser spot-size. The beam is elliptical and thus has a diameter of 6 mm×4 mm. (B-E) diagram demonstrating the number of measurements per sampling frequency of a 12 × 12 mm area. Par sampling represents a step size of 6 mm in × and 4 mm in y, whereas a ×10 sampling frequency represents a 0.6 mm step size in x and a 0.4 mm step size in y. Stepwise measurements are performed in x and then in y to image the whole 12 × 12 mm area. B Par-sampling approach resulting in a total of 12 data points collected over the ROI. C Over-sampling by 2 resulting in a total of 35 data points collected over the ROI. D Over-sampling by 5 resulting in a total of 176 data points collected over the ROI. E Over-sampling by 10 resulting in a total of 651 data points collected over the ROI.

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