3D Camera-Shake Measurement and Analysis

Increasing pixel count in recent image sensor is more susceptible to camera-shake blurs. To overcome this problem, various optical image stabilizers have been developed in many camera manufacturers, but they are not known exactly how effective they work for cancellation of camera-shakes. We propose a new method for detecting the 3D trajectory of camera rotations, i.e., pan, tilt and roll, from the captured image itself to examine quantitatively the degree of the camera-shake or the improvement by the image stabilizer. The key idea consists of capturing the quickly switched test patterns that are displayed on a screen and calculating displacements between each pattern that is multiply recorded in the captured image while opening the shutter. The principle of the 3D camera-shake measurement and evaluation results of the camera-shake correction are presented.