New code for digital imaging system for track measurements

Boukhair, Aziz; Haessler, A.; Adloff, J.C.; Nourreddine, A.

doi:10.1016/s0168-583x(99)00628-x

Cited by 19 publications

(8 citation statements)

References 6 publications

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“…Automatic systems for separating, counting or measuring tracks have been studied for a while, and several solutions were presented (Azimi‐Garakani & Williams, ; Bedogni, ; Beer, Pipper, & Heinrich, ; Boukhair, Haessler, Adlo, & Nourreddine, ; de Siqueira, Cabrera, Nakasuga, Pagamisse, & Job, ; de Siqueira, Nakasuga, Pagamisse, Tello Saenz, & Job, ; Dolleiser & Hashemi‐Nezhad, ; Espinosa, Gammage, Meyer, & Dudney, ; Fews, ; Gleadow et al, ; Masumoto & Wadatsumi, ; Petford & Miller, ; Petford, Miller, & Briggs, ; Price & Krischer, ; Ruan et al, ; Tawara et al, ; Trakowski et al, ; Wadatsumi & Masumoto, ; Yasuda et al, ). Still, the precision of automatic methods is not satisfactory yet; an automatic analysis could need to be manually adjusted by the operator, being more time consuming than the usual measure (Enkelmann, Ehlers, Buck, & Schatz, ; Yasuda et al, ).…”

Section: Introductionmentioning

confidence: 99%

Segmentation of nearly isotropic overlapped tracks in photomicrographs using successive erosions as watershed markers

Siqueira

Nakasuga

Guedes

et al. 2019

Microscopy Res & Technique

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Introduction Procedures for measuring and counting tracks are time‐consuming and involve practical problems. The precision of automatic counting methods is not satisfactory yet; the major challenges are distinguishing tracks and material defects, identifying small tracks and defects of similar size, and detecting overlapping tracks. Materials and Methods Here, we address the overlapping tracks issue using the algorithm Watershed Using Successive Erosions as Markers (WUSEM), which combines the watershed transform, morphological erosions and labeling to separate regions in photomicrographs. We tested this method in two data sets of diallyl phthalate (DAP) photomicrographs and compared the results when counting manually and using the classic watershed and H‐watershed transforms. Results The mean automatic/manual efficiency counting ratio when using WUSEM in the test data sets is 0.97 ± 0.11. Conclusion WUSEM shows reliable results when used in photomicrographs presenting almost isotropic objects. Also, diameter and eccentricity criteria may be used to increase the reliability of this method.

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Section: Introductionmentioning

confidence: 99%

Segmentation of nearly isotropic overlapped tracks in photomicrographs using successive erosions as watershed markers

Siqueira

Nakasuga

Guedes

et al. 2019

Microscopy Res & Technique

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“…Geometrical models concerning the growth of the tracks' length predict that there is no linearity between the axis (major and minor) of elliptical tracks and the particles' energy. As a result, the identification of radon daughters with an alpha spectrometric method, based on the use of SSNTDs is not a trivial task [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Detection of plated-out radon progenies on CR-39 detectors

Patiris¹,

Ioannides²,

Tsabaris³

2019

hnps

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A spectrometric study of alpha particles using CR-39 solid state nuclear track detectors is described. It is based on the application of software imposed selection criteria, concerning the geometrical and optical properties of the tracks which are created by alpha particles of specific energy falling on the detector at given angles of incidence. These selection criteria are based on a preliminary study of tracks’ parameters (major and minor axes and mean value of brightness), using the TRIAC II code. Since no linear relation was found between the energy and the geometric characteristics of the tracks (major and minor axes), we resorted to the use of an additional parameter in order to classify the tracks according to the particles’ energy. Since the brightness of tracks is associated with the tracks’ depth, the mean value of brightness was chosen as the third parameter. This method could be applied as a low cost technique in studies concerning the radon’s daughters 218Po and 214Po behavior in air.

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“…Among these are commercially available systems such as Quantimed 720 [10], Densitron 4M [11] and others as well as systems based on coupling of a CCD or a video camera to an optical microscope and counting with appropriate algorithm/software [12]- [19]. Numerical codes for automatic counting, modeling the track development and calculation of track parameters have also been developed (for example, see [20]- [22] and the references therein).…”

Section: Introductionmentioning

confidence: 99%

Automatic Counting of Electrochemically Etched Tracks in Compact Discs. Application to Retrospective Measurements of Rn-222

Mitev

Madzhunkov

Gerganov

et al. 2010

IEEE Trans. Nucl. Sci.

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This work describes an algorithm for automatic counting of alpha tracks in scanned images of electrochemically etched CDs and DVDs. It is demonstrated that the algorithm copes with the specific problems encountered in retrospective 222 Rn measurements with CDs and DVDs; it reliably separates overlapping tracks and ignores artifacts in the image. The algorithm is validated by comparison to manual counting and a very good correlation is found. The measurement range of 222 Rn concentrations in dwellings and soil gas is estimated. It is shown that the wide span of track densities that can be covered by the algorithm combined with the specific advantages of the compact disc method can provide reliable measurements in the whole range of 222 Rn concentrations of practical interest. For retrospective measurements of 222 Rn in dwellings the estimated range is from 10 Bq m 3 to 100 kBq m 3 for five years exposure time. For 222 Rn in soil gas the estimated range is from 1 kBq m 3 to 10 MBq m 3 for ten days exposure time.

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New code for digital imaging system for track measurements

Cited by 19 publications

References 6 publications

Segmentation of nearly isotropic overlapped tracks in photomicrographs using successive erosions as watershed markers

Segmentation of nearly isotropic overlapped tracks in photomicrographs using successive erosions as watershed markers

Detection of plated-out radon progenies on CR-39 detectors

Automatic Counting of Electrochemically Etched Tracks in Compact Discs. Application to Retrospective Measurements of Rn-222

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