Delivering Diagnostic Quality Video over Mobile Wireless Networks for Telemedicine

Figure 1

Illustration of bit per pixel density at 500 kbps and 360 × 240 pixels with (a) ROI compression: ROI bpp = 0.42; ROI bit rate = 0.42 × 360 × 240 × 0.25 × 30 = 270 kbps; BKGRND bit rate = 500 − 270 = 230 kbps; BKGRND bpp = 230000/(30 × 360 × 240 × 0.75) = 0.117 and (b) uniform compression: overall bpp = 500000/(30 × 360 × 240) = 0.193.

(a)

(b)