Figure 2From: A robotic wheelchair trainer: design overview and a feasibility studyImage from the camera. The image from the camera is 240 × 320, however we define a region of interest (ROI) of 80 × 320 (area between dashed blue lines) around the look-ahead distance (depicted as a horizontal white line). The final ROI is calculated through tracking algorithms and depicted as a square around the line.Back to article page