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Lincoln School of Computer Science
University of Lincoln
Brayford Pool
Lincoln
LN6 7TS
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Descriptive Statistics

The descriptive statistics of the manual segment width measurements for the image sets are summarized in Table I and the standard deviations of the width measurements are summarized in Table II.


TABLE I: Descriptive statistics of the profile diameters.

Dataset Obs Mean Std Div Std E Min Max
HIRS O 4.35 1.26 0.03 1.51 7.75
O1 4.12 1.25 0.03 1.39 7.14
O2 4.35 1.35 0.03 1.21 7.61
O3 4.58 1.26 0.03 1.88 7.44
VDIS O 8.85 2.57 0.05 3.28 18.60
O1 8.50 2.54 0.05 2.48 18.33
O2 8.91 2.69 0.06 3.12 19.30
O3 9.15 2.67 0.06 3.68 18.47
CLRIS O 13.80 4.12 0.24 6.85 21.73
O1 13.19 4.01 0.24 6.71 21.27
O2 13.69 4.22 0.25 6.50 22.10
O3 14.52 4.26 0.25 7.11 22.56
KPIS1 O 7.40 0.36 0.03 6.41 8.38
O1 7.74 0.63 0.05 5.49 9.10
O2 7.29 0.49 0.04 6.07 7.94
O3 7.17 0.37 0.03 6.21 8.22
KPIS2 O 7.52 0.42 0.03 6.33 8.42
O1 7.97 0.47 0.04 6.66 9.16
O2 7.60 0.42 0.03 6.23 8.82
O3 7.00 0.52 0.04 5.51 8.50

TABLE II: Standard Deviations of the measurement methods.

  HRIS VDIS CLRIS KPIS1 KPIS2
  Err SD Err SD Err SD Err SD Err SD
σξ ση σξ ση σξ ση σξ ση σξ ση
O1 0.288 0.303 0.543 0.560 0.567 0.573 0.417 0.394 0.234 0.261
O2 0.256 0.256 0.621 0.616 0.698 0.707 0.317 0.322 0.213 0.212
O3 0.285 0.284 0.669 0.649 0.566 0.540 0.326 0.332 0.233 0.222

There are two datasets for the KPIS:
  • The first set (KPIS1) was used at to compare with Lowell (2004) as we considered his centerpoints. We used another tool to extract the kick points by plotting the cross profile for each centerpoint then the operator click on the right side to choose right point and on the left side to chose the left point on the profile. The centerpoints were defined by Lowell. This set was used in the reviewdb (Al-Diri (2008)) paper.
  • The second set (KPIS2) was collected using the manual method that described in the reviewDB and used in the Al-Diri (2009) paper.

I am pleased to answer any enquiry and I am looking for more collaboration with anyone.


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Dr. Bashir Al-Diri (PhD., MSc., BSc., FHEA)
Lincoln School of Computer Science
University of Lincoln
Brayford Pool
Lincoln LN6 7TS
United Kingdom
Email My Webpage Phone: +44 1522 837111
Fax: +44 1522 886974