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MultipleInstance Pruning For Learning Efcient Cascade Detectors Cha Zhang and Paul Viola MultipleInstance Pruning For Learning Efcient Cascade Detectors Cha Zhang and Paul Viola

MultipleInstance Pruning For Learning Efcient Cascade Detectors Cha Zhang and Paul Viola - PDF document

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Uploaded On 2014-12-12

MultipleInstance Pruning For Learning Efcient Cascade Detectors Cha Zhang and Paul Viola - PPT Presentation

com Abstract Cascade detectors have been shown to operate extremely rapidly with high ac curacy and have important applications such as face detection Driven by this success cascade learning has been an area of active research in recent years Nev ert ID: 22741

com Abstract Cascade detectors have

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0 5 10 Positive Windows Negative Windows Cumulative Score Final Threshold 0 100 200 300 400 500 600 700 -20 -15 -10 -5 Feature Index Cumulative Score Final Threshold Positive windows but below threshold Positive windows above threshold Positive windows retained after pruning (a)(b) Final Threshold-3.0-2.5-2.0-1.5-1.0-0.50.0Detection Rate95.2%94.6%93.2%92.5%91.7%90.3%88.8% # of False Positive95513220875DBP36.1335.7835.7634.9329.2228.9126.72MIP16.1116.0616.8018.6016.9615.5314.59 ApproachViola-JonesBoosting chainFloatBoostWaldBoostWuet al.Soft cascadeTotal # of features606170025466007564943Slowness1018.118.913.9N/A37.1 (25)(a)(b) 0.9010.9030.9050.9070.909 Detection Rate MIP, T=-2.5, #f=11.25 B - B, alpha= - 16, #f=8.46 0.8950.8970.8991000110012001300140015001600 Detection Rate Number of False Positive B - B, alpha= - 16, #f=8.46 B-B, alpha=-8, #f=10.22 B-B, alpha=-4, #f=13.17 B-B, alpha=0, #f=22.75 B-B, alpha=4, #f=56.83