chapter  8
Image stabilization
Pages 12

We saw in Chapter 3 that many cameras with CMOS sensors usually suffer from the “rolling shutter” effect: image lines are acquired sequentially, therefore there is a time difference between lines in the same frame and this causes visible distortions when there is motion in the scene: vertical motion compresses or stretches objects while horizontal motion skews them. The motion doesn’t need to be particularly fast for the distortion to be significant; see Figure 8.1. CMOS sensors with an extra transistor per pixel perform global shuttering and don’t suffer from this problem, but all consumer cameras and most digital cinema cameras do have a rolling shutter (the first high end digital cinema camera with a global shutter was released in late 2012 [36]).