Fig. 5
From: Blood pulsation measurement using cameras operating in visible light: limitations
Bland-Altman plot of L D as a function of L E for all the registered data for natural light (sunlight). In addition, the limit values L GD and L GG are highlighted. The plot was obtained for the following parameters: image resolution M × N=480 × 640 pixels, resolution of brightness levels 256 for each RGB component (3·28) at a frequency of 30 frames per second, the size of the median filter mask M h × N h = 9×9 pixels