Changes between Version 165 and Version 166 of UvmatHelp
- Timestamp:
- Jan 21, 2015, 3:15:31 PM (10 years ago)
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UvmatHelp
v165 v166 802 802 Examples of XML files are provides in /XML_SCHEMAS/ImaDoc_templates. 803 803 804 ('''[num_ CorrBoxSize_1,_2,_3], [iby])''' set the size (in pixels) of the 'correlation box', the sliding window used to get image correlations. '''[num_SearchBoxSize_1,_2,_3]''' set the size of the 'search box' in which image correlation is calculated, see figure. This search box can be shifted with respect to the correlation box by parameters ([num_SearchBoxShift_1,_2,_3]). This is useful in the presence of a known mean flow. The default valueSearchBoxSize=(25,25) is generally good, use a larger size for images with few particles, use an elongated box , e.g. (11,41), to optimise the resolution in one direction (for instance in a boundary layer).804 ('''[num_!CorrBoxSize_1,_2,_3], [iby])''' set the size (in pixels) of the 'correlation box', the sliding window used to get image correlations. '''[num_!SearchBoxSize_1,_2,_3]''' set the size of the 'search box' in which image correlation is calculated, see figure. This search box can be shifted with respect to the correlation box by parameters ([num_!SearchBoxShift_1,_2,_3]). This is useful in the presence of a known mean flow. The default value !SearchBoxSize=(25,25) is generally good, use a larger size for images with few particles, use an elongated box , e.g. (11,41), to optimise the resolution in one direction (for instance in a boundary layer). 805 805 806 806 A parameter '''[num_CorrSmooth] ''' controls the smoothing of the image corelation curves used in civ, the default value 1 is generally used. … … 814 814 A subregion can be alternatively selected by a mask image, selecting the edit box '''[MASK]'''. If a mask image with an appropriate name is found in the image directory, it wil be detected, and the indication 'xxmask' appears in the edit box. (xx is the number of slices, equal to 1 for a single mask). Otherwise a browser appears to select a (single) mask file. 815 815 816 Finally thresholds on image intensity can be introduced to suppress underexposed or overexposed parts of the image: select the check box '''[THRESH],''' and edit the boxes '''[ MinIma] ''' and '''[MaxIma] ''' which then appear.816 Finally thresholds on image intensity can be introduced to suppress underexposed or overexposed parts of the image: select the check box '''[THRESH],''' and edit the boxes '''[!MinIma] ''' and '''[!MaxIma] ''' which then appear. 817 817 818 818 The velocity results are stored in the subdirectory set by the edit box '''[subdir_civ1].''' Use the browser''' [list_subdir_civ1]''' to check the existing subdirectories.