Apparatus, systems, and methods disclosed herein may estimate the magnitude of relative motion between a scene and an image capture device used to capture the scene. Some embodiments may utilize discrete cosine transform and/or Sobel gradient techniques to identify one or more blocks of pixels in an...http://www.google.de/patents/US7924316?utm_source=gb-gplus-sharePatent US7924316 - Image feature identification and motion compensation apparatus, systems, and methods
