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Edge Detection Compression and Security of Surveillance Videos

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

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Edge Detection Compression and Security of Surveillance Videos

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  1. Edge DetectionCompression and Security of Surveillance Videos 張晏豪

  2. Experimental Setting • Windows XP • Intel(R) Core(TM)2 Quad CPU Q6600 @2.40GHz • 2GB RAM

  3. Experimental Parameters • Threshold_sobel:Determine how many edge points you want • Threshold_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

  4. Experimental Results • Edge points: Original image after Sobelfilter • Threshold_sobel:130 • 2949 edge points • 4346826 lines Original image Edge points

  5. Experimental Results • Threshold_sobel:130 • Threshold_dis:5 • Threshold_score:400 • Elapsed time :4738 sec

  6. Threshold_sobel:130 Threshold_dis:1.5 Threshold_score:100 Threshold_sobel:130 Threshold_dis:1.5 Threshold_score:200 Threshold_sobel:130 Threshold_dis:1.5 Threshold_score:150 Threshold_sobel:130 Threshold_dis:1.5 Threshold_score:50

  7. Experimental Results • Threshold_sobel:130 • Threshold_dis:1.5 • Threshold_score:100 • Elapsed time:4982 sec

  8. Paint the lines with top 1000 score

  9. Hough Transform • Detect lines in r-θplane

  10. Experimental Parameters • Threshold_sobel: Determine how many edge points you want • Threshold_interval: Angle increment of each detection • Threshold_votes: If the amount of edge points on the angle are more than threshold_score, the line at this angle would be painted

  11. Threshold_sobel:250 Threshold_dis:5 Threshold_score:5 Experimental Results Threshold_sobel:130 Threshold_dis:1 Threshold_score:10 Threshold_sobel:130 Threshold_interval:1 Threshold_votes:10 Threshold_sobel:130 Threshold_interval:1 Threshold_votes:5 Threshold_sobel:130 Threshold_interval:1 Threshold_votes:20 Threshold_sobel:70 Threshold_dis:1 Threshold_score:10

  12. Experimental Results • Threshold_sobel:130 • Edge points:2949 • Threshold_interval:1 • Threshold_votes:10 • Elapsed time :0.87 sec

  13. Experimental Results Threshold_sobel:130 Threshold_interval:1 Threshold_votes:5 Threshold_sobel:130 Threshold_interval:1 Threshold_votes:10 Threshold_sobel:130 Threshold_interval:1 Threshold_votes:15

  14. Experimental Results • Threshold_sobel:130 • Edge points:4866 • Threshold_interval:1 • Threshold_votes:10 • Elapsed time :1.37 sec

  15. END

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