Demonstration of characteristic skin surface contours of extramammary Paget's disease and parapsoriasis en plaque by image analysis of negative impression replicas

Kikuchi, Katsuko; Aiba, Setsuya; O'goshi, Ken Ichiro; Yanai, Motohiro; Takahashi, Masanori; Kasai, Hidefumi; Tagami, Hachiro

doi:10.1016/s0923-1811(02)00045-2

Cited by 1 publication

(2 citation statements)

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“…There were amplitude parameters, but also hybrid parameters such as the density of summits S ds , functional volume parameters such as the void volume V v or the material volume V m, or functional parameters such as the reduced peak height S pk or the kernel roughness depth S k . All these parameters were evaluated using 17 cut-off lengths (equal to 6,9,10,13,15,19,23,29,36,45,56,74,99,127,178, 297 and 446 μm) with three types of Robust Gaussian filters [26] (high pass, low pass and band-pass) in order to get a multiscale roughness characterization. For the band-pass filter, each indicated value corresponds to the lower cut-off length, while the bandwidth is equal to the following greater value subtracted by the lower cut-off length.…”

Section: Multiscale Roughness Characterizationmentioning

confidence: 99%

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Multiscale assessment of the accuracy of surface replication

Marteau¹,

Wieczorowski²,

Xia³

et al. 2014

Surf. Topogr.: Metrol. Prop.

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This paper presents a methodology for the assessment of replication accuracy using a multiscale approach. It focuses on the quantification of 'metrological replication accuracy', which is a direct comparison of the topography of a surface and its replica. This methodology uses an analysis of variance and takes into account the variability of the experimental results. To assess replication accuracy, the differences in either one or several roughness parameter values of a surface and its replica are assessed over different scales, using the F-value as an indicator. In order to get a multiscale comparison, the surfaces are examined using 17 cut-off lengths with three types of filters (high-pass, low-pass and band-pass). This methodology enables us to identify the scales at which the topography features are best replicated. Transfer functions of roughness parameters are also observed to quantify the differences between the studied surface and its replica. This methodology is applied to the study of the replication of ground titanium alloy specimens having rough to mirror-like surfaces. It enables us to show that the studied replica material enables the accurate reproduction of rough surfaces but gives inaccurate results for the replication of smooth surfaces.

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Section: Multiscale Roughness Characterizationmentioning

confidence: 99%

“…The use of replication also enables one to keep a record of surface changes. Replicas can be used as a kind of data storage when studying phenomena such as wear [9][10][11][12], crack detection [13,14], skin diseases or aging [15,16]. Finally, replication is also used to explore the manufacturing of biomimetic surfaces [17,18].…”

Section: Introductionmentioning

confidence: 99%