Description and interpretation of the bracts epidermis of Gramineae (Poaceae) with rotated image with maximum average power spectrum (RIMAPS) technique.

During the last few years, RIMAPS technique has been used to characterize the micro-relief of metallic surfaces and recently also applied to biological surfaces. RIMAPS is an image analysis technique which uses the rotation of an image and calculates its average power spectrum. Here, it is presented as a tool for describing the morphology of the trichodium net found in some grasses, which is developed on the epidermal cells of the lemma.

Quantitative study of Xanthosoma violaceum leaf surfaces using RIMAPS and variogram techniques.

Two new imaging techniques (rotated image with maximum averaged power spectrum (RIMAPS) and variogram) are presented for the study and description of leaf surfaces. Xanthosoma violaceum was analyzed to illustrate the characteristics of both techniques. Both techniques produce a quantitative description of leaf surface topography.

Analysis of the intensity curves obtained by the unidirectional laser oblique illumination technique at different magnifications.

The study of the gaussian parameter omega-the approximate width of a peak at half height-of the intensity curves obtained by means of the Unidirectional Laser Oblique Illumination technique employed in the optical microscopy of materials permits introduction of the concept of variation of a surface pattern at different magnifications. This concept establishes how the surface pattern or topography varies among different areas when different magnifications are used. Diffraction gratings and metallic surfaces which have been subjected to different metallographic procedures are analyzed, using objectives of 8x, 16x, and 32x.

A new surface characterization technique: RIMAPS (Rotated Image with Maximum Average Power Spectrum).

This work introduces a new imaging technique, Rotated Image with Maximum Average Power Spectrum (RIMAPS), for use in determining orientation and characteristics of surface topography. It consists of computing the maximum value of the averaged power spectrum, given by one step of the two-dimensional Fourier transform, for each angle of rotation of a digitized image. The basic measurement science of this technique is described and different cases are studied.

Linear rugosity concept of crystalline surfaces by using the unidirectional laser oblique illumination (ULOI) technique.

The study of the I(phi) curves obtained with Unidirectional Laser Oblique Illumination describes the roughness of a crystal as a combination of straight edges in different directions, which generate the concept of linear rugosity. In the present work, a model of the crystalline surface based on this concept is introduced. Diffraction gratings as well as metallic surfaces subjected to different metallographic procedures are analyzed.