Estimating the 3D direction of a translating camera from a single motion-blurred image

6 We propose an algorithm for estimating the 3D motion direction of a camera that un7 dergoes a pure translation. This algorithm exploits a single blurred image, and recovers the 8 3D translation direction thanks to an accurate analysis of the motion blur, which is char9 acterized by rectilinear smears whose directions and extents typically vary throughout the 10 image. The core of our algorithm is the estimation of the direction of these smears within 11 small image regions that are automatically selected according to the image content. The 12 algorithm has been succesfully tested on camera images and extensively validated with 13 different amount of noise in the images. 14