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- F. G. Peet, T. S. Sahota
- IEEE Transactions on Pattern Analysis and Machine…
- 1985

Methods from the theory of surfaces in differential geometry are applied to the gray tone intensity and absorbance surfaces defined by a digital image. In particular, the first fundamental form, the second fundamental form, the two principal curvatures, the Gaussian curvature, and mean curvature from classical differential geometry are presented. New… (More)

- F. G. Peet, T. S. Sahota
- Analytical and quantitative cytology
- 1984

A computer and optical microscope image processing system for the acquisition, editing and analysis of quantitative, multivariate, cell nuclear data is described. The experimental equipment and methods are discussed, the mathematics used are presented, and the additions, modifications and deletions to the TICAS 11/45 set of computer programs for the… (More)

- F. G. Peet, Tarlochan S. Panesar, T. S. Sahota, Jack R. Sutherland
- Journal of nematology
- 1990

A digital imaging system was developed for measuring various physical characteristics of individual nematodes and for comparing groups of nematodes. The equipment consists of a microscope, a video camera, a video digitizer, interactive displays, and a computer. Various physical and mathematical methods were incorporated, algorithms devised, and computer… (More)

- F. G. Peet, T. S. Sahota
- Analytical and quantitative cytology
- 1983

An approach to the statistical testing of differences between two cell populations the elements of which are characterized by multivariate data is described. The approach is based on the Fisher discriminant and the Kruskal-Wallis test. The method, which is sufficient but not necessary, makes no assumptions about the normality of the data or about the… (More)

- F. G. Peet, T. S. Sahota
- Analytical and quantitative cytology and…
- 1988

The absorbance values of a cell nucleus, as measured at each pixel location, can be considered as forming a surface in a three-dimensional space. The principal curvatures of differential geometry can then be evaluated for this surface. From these curvatures, two new variables are computed that, when averaged over all pixels in the nucleus, are viewed as… (More)

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