WinDendro tree-ring and wood density analysis software
 For tree-ring, stem, wood density analysis & measurement


WinDENDRO Features Per Software Model
Feature
WinDENDRO Software Model
Description
Paths
Basic
Reg
Dens
 .
Number of automatic ring detection methods
1
2
2
 All versions have the intensity differences method. The Reg and Density versions have an alternative method called Teach&Show method which is sometimes better for deciduous (but can also work with conifers). Two methods give more options for low contrasted rings.
Paths per image (max)
4
256
256
 The mini version only works with one path at a time. The Basic can work with 1 to 4
Vertical or horizontal paths
Y
Y
Y
 Paths in the same direction as the image edges.
Paths in any direction
N
Y
Y
 Paths in directions other than horizontal and vertical
Multi-segments paths
N
Y
Y
 Paths that have more than one segment and can change direction between segments
Brother paths
N
Y
Y
 Possibility to add paths to existing ones sharing the same origin (such as disk pith).
Tangent to ring boundary
Y
Y
Y
 Ring widths are more precise when they are oriented to follow the ring boundary direction.
Skip gaps (cracks, void)
Y
Y
Y
 To exclude areas such as cracks due to wood drying from the ring widths measurements.
Batch ReAnalysis
N
Y
Y
 Possibility to reanalyse images previously analysed under different analysis parameters. To change the calibration or the earlywood definition for example.
Measurements . . . .
Earlywood, latewood width measurement
N
Y*
Y*
 * The density version will produce more precise earlywood width measurement when density analysis is turned on (even if no light calibration is done). This version is strongly recommended for this measurement.
Sapwood width
Y
Y
Y
 Must be indicated manually by the operator.
Ring features
N
Y
Y
 For each ring, you can set up to five features or observations that you define (frost ring, wide, missing...) plus add textual comments. Features are displayed in the image, the ring-widths graphic and are saved with the analysis data.
Log/Area module
N
N
Y
 This module is optional and can be added to any version of WinDENDRO. It adds the following:
•:Compression (reaction) wood and voids (cracks) areas measurement. This is done manually by tracing them in the image.
•Disk area, shape (form coefficient), perimeter, average radius, ring density per inch or cm in function of distance to pith. This is done semi-automatically.
Light reflection analysis
N
Y*
Y*
 Export the path intensity profile to text files (on a pixel basis). The density version will produce more precise measurements when density analysis is turned on (even if no light calibration is done). This version is strongly recommended for this measurement.
Density analysis
N
N
Y
 From x-ray films or images from digital filmless x-ray systems. Measurements per ring include; minimum density, maximum density, average ring density, average earlywood density, average latewood density and ring orientation.
Image Sources
.
.
.
 .
Analyse tiiff, jpeg or bmp files
Y
Y
Y
 Tiff uncompressed is recommended for precision.
Acquire images from TWAIN compatible scanners and cameras
Y
Y
Y
 The Mini version can only open tiff, bmp and jpeg files.
Calibration for images which come from a camera
Y
Y
Y
 Calibration of images from a camera can be done with a single mouse click when Regent’s new calibration targets are included in the image.
Image Processing and Analysis
.
.
.
 .
9 to 16 bits per pixel grey levels
N
N
Y
 Grey levels images with more than 8 bits per pixels of information (typically 10, 12 or 16 bits/pixel) produce greater precision density analyses.
Color channel selection
N
N
Y
 Color images can be visualized and analysed on one of its three color channels (Red, Green, or Blue) or using the three of them (a regular color image). If the color channel is changed while an analysis is displayed, the paths intensity profile and density values for each ring (min, max, average) are recalculated automatically.
Image edition
N
Y
Y
 You can edit the image (modify its content) with any color present in it (by picking it up interactively) or by defining your own colors. This allows to remove defects that prevent ring analysis from being done accurately. It can also be used to remove artefacts for density analysis (on x-ray films or wood). Any modifications done to the image are permanent and are saved with it (if you save the image after edition).
Image Temporary Markers
N
Y
Y
 You can draw temporary markers over the image (to help you keep track of rings along a disk to find missing ones for example). Markers appearance (thickness, color) can be changed after they have been created and can have an identification name.
Background light variations removal
N
N
Y
 Mostly used with camera images.
Graphic
.
.
.
 .
Ring-width graphic, cross-dating, skeleton plots, detrending
N
Y
Y
 Refer to the Graphic section of this brochure
Misc.
.
.
.
 .
Save data in ascending/descending order
Y/N
Y/Y
Y/Y
 From pith to bark or bark to pith.
Possibility to save only the last few rings of a path
N
Y
Y
 For stem analysis mostly. To study growth of only some years of interests.
Customisable sample identification
N
Y
Y
 Choose the meaning and type of some variables used to identify a sample before its anlaysis. This information is saved with the data.
WinCELL Regular included
N
Y
Y
 A program for wood cell anatomical analysis (lumen area, length, cell length, earlywood width...)
Free updates
1
2
2
 Number of free updates that you will get after purchasing.
Specifications subject to modifications.


To learn more about WinDENDRO click the following links or you can download our WinDENDRO brochure (1.4 MB).

Intro | Analysis Process | FAQs | Stem Analysis | Most recent version | References


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WinDENDRO, MacDENDRO, XLStem and WinSTEM are registered trademarks
Copyright (c) 1995-2009 by Regent Instruments Inc. All rights reserved
www.regentinstruments.com

Last revision:July 31, 2009