User Interface > Menu bar > Tools > Manual reference image comparison

Manual reference image comparison

To create reference camera images and compare camera images, the user must have the rights to see live images in surveillance mode (see Administrative rights and user rights).

The manual reference image comparison helps detect changes in the camera orientation.

Mobotix cameras are only supported for Motion JPEG. Reference Image comparison does not work on images from fish-eye cameras.

  1. Select a camera from the list and click Create reference image. The current camera image will be used as reference image. The current view displays the actual live image of the camera.
  2. To delete a reference image, select the camera from the list and click Delete reference image.
  3. Select the camerae and check both images for changes.
  4. If changes are detected, click the red con (2) to mark the change as not identical.
  5. If the images are identical, click the green icon (4) to mark the image as identical.
  6. If the changes are difficult to see, select Show differences only. The changes detected by the image processing software will be displayed as red areas in the current view. If no changes are detected, the current view turns black.
  7. Deselect Show differences only to return to the actual camera image.
  8. Select Activate computerized support to display a threshold scale. Move the pointer on the scale to change the threshold values. This changes the threshold values of the current image and helps discern possible changes in the image.
  9. Deselect Keep aspect ratio to display both images filling the frame. Depending on the camera image, this setting may distort the image's aspect ratio.
  10. To print the images, click the printer icon (3).
Printing the reference image comparison

  1. In the print report dialog, select Show difference images to print the current views with the differences highlighted.
  2. Select Show all reference images to print the reference images alongside the current views.
  3. Select Show difference as percent to print the percentage of the detected differences.
  4. Select Show objected cams to display only those cameras with images differing from the reference image.
  5. Enter the user name and add comments, if necessary.
  6. Click Print report.