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. 2007 Mar 14;20(4):352–366. doi: 10.1007/s10278-006-0624-6

Table 1.

Calibration Performance for Different Image Resolutions, in Terms of Horizontal (fc1) and Vertical (fc2) Focal Length Error, Measured in Pixels

Resolution fc1 Error fc2 Error
2,048 × 1,536 152.57658 148.04606
1,024 × 768 51.81176 51.25215
640 × 480 37.49968 36.96163