Table 21 Trade-offs of energy latency-leading to operational degradation and false alarms in VISTA
Number | Memory/energy efficiency in VISTA | Implementation layer | Trade-off | Compensation |
|---|---|---|---|---|
1 | Triplet formation of SONARs for reducing shutter ‘ On’ time of IN cameras andbreach avoidance amidst failing nodes | Sonar-sensing module | SONAR 3-pulse detectionintroduces latent responseof INs causing falsealarm (+ve -ve) | Pulse repetition rate (PRR)in SONAR tailored tomatch target speed andrange [42] |
2 | Sonar sleep scheduling to conserve energy | Sonar-sleeping module | False alarm (+ve -ve)amidst holes in full-widthhalf maximum(FWHM) coverage | Automated SONARcalibration by triplettraining similar to [42] |
3 | Database with relative silhouettes only(mobility model compliant) to reduce(a) memory occupancy, (b) comparisoncomputations, and (c) frequency ofIP module usage | Image change detectionsub-module and imagesubtraction sub-module | Tight coupling withassumed mobility modelcan lead to both falsealarms | Silhouette distribution and confiscation dynamicallyassociated with per pathcumulative surety canreduce the effect ofmobility |
4 | Image change detection triggerssubsequent IP modules (need-basedcomputations only) | Image change detectionsub-module | Slow moving objectsbecome immersed inscene causing falsealarm (+ve -ve) | Using GMM [11] alleviatesforeground becomingbackground |
5 | Surety-based transcoding | Image compression andstorage sub-module | Higher transcodingneutralizes the job ofsubsequent IP modules | Benchmark changedetection and subtractionagainst acceptabletranscoding levels |