Edge Detection Compression and Security of Surveillance Videos
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Edge Detection Compression and Security of Surveillance Videos 張張張
description
Edge Detection Compression and Security of Surveillance Videos. 張晏豪. Experimental Setting. Windows XP Intel(R ) Core(TM)2 Quad CPU Q6600 @ 2.40GHz 2GB RAM. Experimental Parameters. Threshold_sobel :Determine how many edge points you want - PowerPoint PPT Presentation
Transcript of Edge Detection Compression and Security of Surveillance Videos
Edge DetectionCompression and Security of Surveillance Videos張晏豪
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Experimental Setting Windows XPIntel(R) Core(TM)2 Quad CPU
Q6600 @2.40GHz2GB RAM
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Experimental ParametersThreshold_sobel:Determine how many
edge points you wantThreshold_dis: If the point is in the
interval (- Threshold_dis,+ Threshold_dis), the point is regarded as edge point
Threshold_score: If the amount of edge points around the line are more than threshold_score, the line is regard as true line
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Experimental Results Edge points: Original image after Sobel filter Threshold_sobel:130 2949 edge points 4346826 lines
Original image Edge points
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Experimental Results Threshold_sobel:130 Threshold_dis:5 Threshold_score:400 Elapsed time :4738 sec
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Threshold_sobel:130Threshold_dis:1.5Threshold_score:200
Threshold_sobel:130Threshold_dis:1.5Threshold_score:50
Threshold_sobel:130Threshold_dis:1.5Threshold_score:150
Threshold_sobel:130Threshold_dis:1.5Threshold_score:100
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Experimental Results Threshold_sobel:130 Threshold_dis:1.5 Threshold_score:100 Elapsed time:4982 sec
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Paint the lines with top 1000 score
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Hough TransformDetect lines in r-θ plane
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Experimental ParametersThreshold_sobel: Determine how
many edge points you wantThreshold_interval: Angle
increment of each detectionThreshold_votes: If the amount of
edge points on the angle are more than threshold_score, the line at this angle would be painted
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Experimental Results
Threshold_sobel:130Threshold_interval:1Threshold_votes:10
Threshold_sobel:130Threshold_interval:1Threshold_votes:20
Threshold_sobel:130Threshold_interval:1Threshold_votes:5
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Experimental Results Threshold_sobel:130 Edge points:2949 Threshold_interval:1 Threshold_votes:10 Elapsed time :0.87 sec
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Experimental Results
Threshold_sobel:130Threshold_interval:1Threshold_votes:5
Threshold_sobel:130Threshold_interval:1Threshold_votes:10
Threshold_sobel:130Threshold_interval:1Threshold_votes:15
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Experimental Results Threshold_sobel:130 Edge points:4866 Threshold_interval:1 Threshold_votes:10 Elapsed time :1.37 sec
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