In a real world application an image from a stabilized sensor on a moving platform will not be 100 percent stabilized. There will always be a small unknown error in the stabilization due to factors such as dynamic deformations in the structure between sensor and reference Inertial Navigation Unit, servo inaccuracies, etc. For a high resolution imaging sensor this stabilization error causes the image to move several pixels in unknown direction between frames. TO be able to detect and track small moving objects from such a sensor, this unknown movement of the sensor image must be estimated. An algorithm that searches for land contours in the image has been evaluated. The algorithm searches for high contrast points distributed over the whole image. As long as moving objects in the scene only cover a small area of the scene, most of the points are located on solid ground. By matching the list of points from frame to frame, the movement of the image due to stabilization errors can be estimated and compensated. The point list is searched for points with diverging movement from the estimated stabilization error. These points are then assumed to be located on moving objects. Points assumed to be located on moving objects are gradually exchanged with new points located in the same area. Most of the processing is performed on the list of points and not on the complete image. The algorithm is therefore very fast and well suited for real time implementation. The algorithm has been tested on images from an experimental IR scanner. Stabilization errors were added artificially to the image such that the output from the algorithm could be compared with the artificially added stabilization errors.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Image registration of naval IR images


    Contributors:

    Conference:

    Acquisition, Tracking, and Pointing X ; 1996 ; Orlando,FL,United States


    Published in:

    Publication date :

    1996-06-07





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Analysis of image registration algorithms for infrared images

    Venkateswarlu, Ronda / Chatterji, B. N. | SPIE | 1992


    Automatic Image-to-Image Registration of Near Real-Time SAR Images

    Wessel, B. / Huber, M. / Roth, A. et al. | British Library Conference Proceedings | 2007


    Registration of Deformed Images

    Goshtasby, A. / United States; National Aeronautics and Space Administration | British Library Conference Proceedings | 1998