MISAO Project

Home Page       Tue Aug 19 18:00:36 JST 1997

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Steps and problems of image processing for this system

This section lists up the steps of image processing for this system and considers problems at each step.

After taking a new image, a user inputs the image itself and exposed time, approximate position in the celestial globe, approximate area width as additional information to the system in order to check the image. The system receives the image and additional information and goes into process as follows.

  1. Select the input image
    When receiving the user's image, the system has to check if it is really an astronomical image. However, this step is not so important, especially for an experimental system.
  2. Check and correct the quality
    Then the system should grasp various errors of the image such as a guide error, out of focus, bending, etc., and it should also correct them for the latter matching step with star catalogs. However, this step is not so important, either.
  3. Detect stars automatically
    This is indispensable. Detecting bright stars is not so difficult. However new objects to be detected should be mostly faint. Then the system has to distinguish them from noises.
  4. Identify each detected star with stars in catalogs
    The next step is matching between detected stars and those in catalogs. This step will take enormous time without elaboration.
  5. Announce known objects in the image
    The data of known objects are updated day by day. So the system uses the latest data via network.
  6. Announce detected candidates of unknown objects
    Finally the system tells the user the detected candidates of new objects, if they are not in catalogs or much different from those in the old images.
  7. Register the image to the database
    After these steps, the system register the image to the database. The image will be browsed by other users in the future.

next up previous
Next: Afterword Up: Image processing for new Previous: Examples of new objects

Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.