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Table 1 Rate of incorrect background extraction. Rate of incorrect background extraction for images of the lower back, upper-back and legs. The first figure indicates the number of images whose background was incorrectly extracted. The second figure is the total number of images.

From: Quantitative assessment of pain-related thermal dysfunction through clinical digital infrared thermal imaging

  With Denoising Without Denoising
Lower Back images 9/72 22/72
Upper Back images 12/85 15/85
Legs 22/205 30/205