Changes between Version 88 and Version 89 of UvmatHelp


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Timestamp:
Jul 5, 2013, 5:22:02 PM (7 years ago)
Author:
sommeria
Comment:

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  • UvmatHelp

    v88 v89  
    597597-'''Intrinsic parameters''': the previous procedure first determines the extrinsic parameters which characterize the camera optics (focal lengths and nonlinear deformation parameter). Then the extrinsic parameters, translation and rotation of the camera with respect to the reference grid, are determined on the last grid image. if the same optics is used in a new experiment, it is possible to skip the multiplane detection, importing the intrinsic parameters from a previous <!ImaDoc> file by the menu bar tool '''[!Import/Intrinsic]''' parameters, then applying the calibration with the option '3D_extrinsic' with the reference grid image only.
    598598
    599 -'''Section planes:''' deducing the physical coordinates from image coordinates requires information on the section plane. The default assumption is that the objects in the image are in the plane ''z''=0, but uvmat handles volume scanning by a laser plane. A set of section planes can be defined by their origin positions and rotation angle vectors. Theses planes are labelled by a ''z index'', assumed to be the frame index j (case of volume scan), or the index i (case of multiplane scan). In the second case, the z index is
     599-'''Section planes:''' deducing the physical coordinates from image coordinates requires information on the section plane. The default assumption is that the objects in the image are in the plane ''z''=0, but uvmat can handle volume scanning by a laser plane. A set of section planes can be defined by their origin positions and rotation angle vectors. Theses planes are labelled by a ''z index'', assumed to be the frame index j (case of volume scan), or the index i modulo the number of slices NbSlice (case of multiplane scan). The chosen option can be doucumented in the file <ImaDoc> by the menu bar command '''[Tools/set planes]''' of '''geometry_calib.fig'''. A dialog box appears for entering the set of section plane positions ''z'', as lower value, upper value and increment. Similarly an angular scan be be introduced. After introduction of the multi-plane information, the z-index is displayed in the frame '''[FileIndices]''' of '''uvmat.fig'''. The local z position of the mouse pointer, assuemed to lay on the current section plane, is then displayed in '''[text_display]'''.
    600600
    601601=== 8.3 Structure of the xml file ===