Tburt11 at 20:19, 19 June 2007

2007-06-19T20:19:17Z

← Older revision		Revision as of 16:19, 19 June 2007
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	[[General_Notes\|Back]]		[[General_Notes#Zone_Configurations_and_Fine_Tunings\|Back]]

	[[Algorithm Pseudo Code]]		[[Algorithm Pseudo Code]]

Tburt11 at 19:04, 18 June 2007

2007-06-18T19:04:51Z

← Older revision		Revision as of 15:04, 18 June 2007
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			[[General_Notes\|Back]]

	[[Algorithm Pseudo Code]]		[[Algorithm Pseudo Code]]

Tburt11 at 18:41, 18 June 2007

2007-06-18T18:41:30Z

New page

[[Algorithm Pseudo Code]]

[[Algorithm C code snippet]]

The primary goal of this algorithm is to determine if the current image snapshot has changed from the previous image snapshot (or reference image).

Secondary to this goal, is the need to make this determination as soon as possible, to reduce the amount of computation (comparisons). This will ease the load on the box. So, we seek to prove the image has not changed, and as soon as we make that determination, we stop the analysis.

On the zone configuration page, there is an "Alarm Check Method" parameter, and depending on this setting, a series of analysis are performed:

If Alarm_Check_Method is "Alarmed Pixels". Then the first analysis is done. If this analysis determines a not-changed state, then we exit with that conclusion.

If Alarm_Check Method is "Filtered Pixels", then after processing the "Alarmed Pixels" tests (and getting a result that the image has changed), another processing is done, based on the Filtering Parameters. If this analysis determines a not-changed state, then we exit with that conclusion.

If Alarm_Check Method is "Blobs", then after processing the "Filtered Pixels" tests above (and getting a result that the image has changed), another processing is done, based on the blob parameters. If this analysis determines a not-changed state, then we exit with that conclusion.

Otherwise, we have a changed image, and an alarmed condition, and the images are captured.

Zone Analysis Pseudo Algorithm - Revision history

Tburt11 at 20:19, 19 June 2007

Tburt11 at 19:04, 18 June 2007

Tburt11 at 18:41, 18 June 2007