Method and device for consistent region of interest

1. A method for maintaining proper mapping of a mapped region of interest with respect to a region of interest in a field of view imaged by a surveillance camera, the method including:

detecting a change in the surveillance camera that causes the surveillance camera to image a new field of view;

receiving feedback that includes an actual mechanical motion of the surveillance camera;

determining a new position for the mapped region of interest from the feedback, wherein the new position is based on an inverse relationship between the change in the surveillance camera and a location of the region of interest within the new field of view; and

remapping the mapped region of interest based on the new position such that the mapped region of interest corresponds with the location of the region of interest.

2. A system for maintaining proper mapping of a mapped region of interest with respect to a region of interest in a field of view imaged by a surveillance camera, the system comprising:

a memory that stores instructions; and

a processor coupled to the memory and configured to execute the instructions to perform a method comprising:

detecting a change in the surveillance camera that causes the surveillance camera to image a new field of view;

receiving feedback that includes an actual mechanical motion of the surveillance camera;

determining a new position for the mapped region of interest from the direction and the magnitude included in the feedback, wherein the new position is based on an inverse relationship between the change in the surveillance camera and a location of the region of interest within the new field of view; and

remapping the mapped region of interest based on the new position such that the mapped region of interest corresponds with the location of the region of interest.

3. The system of claim 2 , further comprising:

a motion control motor that receives instructions from the processor to control orientation of the surveillance camera.

4. A method for maintaining a mapped region of interest in a proper location, the method comprising:

compiling a database of images representative of a total possible viewing area available to a camera;

using the database of images to complete a composite field of view of the total possible viewing area available to the camera;

defining a region of interest with respect to a location of the region of interest within the composite field of view;

moving the camera to a current field of view within the total possible viewing area available to the camera;

performing an image analysis on the current field of view and the composite field of view to determine an orientation of the camera and location of the region of interest within; and

setting a mapped region of interest to be coextensive with the location of the region of interest.

5. The method of claim 4 , wherein compiling a database of images includes:

moving the camera through the total possible viewing area available to the camera; and

storing the images as the camera moves through the total possible viewing area corresponding to the total possible field of view of the camera at the highest magnification level.

6. The method of claim 5 , wherein using the database of images to complete a composite field of view includes:

comparing the stored images using image registration techniques; and

using the result of the image registration techniques to create the composite field of view.

7. The method of claim 4 , wherein performing an image analysis on the current field of view and the composite field of view to determine an orientation of the camera includes:

performing a fast Fourier transform on both the current field of view and the composite field of view;

providing frequency domain results of the fast Fourier transform to a correlation algorithm; and

determining with the correlation algorithm where the current field of view is located within the composite field of view.

8. The method of claim 7 , wherein after determining where the current field of view is located within the composite field of view, the method includes:

using the locations of the region of interest defined with respect to the composite field of view to determine the location of the region of interest with respect to the current field of view.

9. The method of claim 8 , where setting the mapped region of interest to be coextensive with the location of the region of interest is determined with respect to the current field of view.

10. A system for maintaining proper mapping of a mapped region of interest with respect to a region of interest, the system comprising:

a memory having instructions stored thereon; and

a processor coupled to the memory and configured to execute the instructions to perform a method comprising:

receiving feedback regarding motion of a surveillance camera and remapping the mapped region of interest based on an inverse relationship between movement of the surveillance camera and a location of the region of interest within a current field of view of the surveillance camera such that the mapped region of interest corresponds with the region of interest;

compiling a database of images representative of a total possible viewing area available to a camera;

using the database of images to complete a composite field of view of the total possible viewing area available to the camera;

defining a region of interest with respect to a location of the region of interest within the composite field of view;

moving the camera to a current field of view within the total possible viewing area available to the camera;

performing an image analysis on the current field of view and the composite field of view to determine an orientation of the camera and location of the region of interest within; and

setting a mapped region of interest to be coextensive with the location of the region of interest.