WinDENDRO Step by step, tree-ring measurement, stem and wood density analysis
Image Analysis for Plant Science
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Regent Instruments Inc. since 1991

 

 

WinDENDRO

 


For sales informations,
contact us by email

sales@regentinstruments.com

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Software Features

 
WinDENDRO Basic
 
WinDENDRO Regular
 
WinDENDRO Density
 
 

Low cost entry version to measure annual tree-rings.

 

Includes all features of the Basic version plus extra features and analyses.

 

Includes all features of Regular version plus extended, Density and Blue Reflectance analyses.

 
Measurements
Basic
Reg
Density
Description
Number of automatic ring detection methods
1
4
4
The 3 supplemental methods are sometimes better for deciduous species and for low contrasted rings difficult to analyse.
Density analysis (minimum, maximum, average for earlywood, latewood and ring)
From images of x-ray films or digital filmless x-ray systems, true density can be measred.
Blue Reflectance analysis
A surrogate to density analysis. Measures blue reflected light from wood samples and can be correlated to density (if desired). A calibration on a blue calibrated reflectance target is required (sold as an option).
Log/Area
•Compression (reaction) wood and voids (cracks) areas measurement can be 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 (semi-automatic).
Light reflection analysis
Raw (uncalibrated) intensity profiles. The density version is required to calibrate light reflectance.
Earlywood-Latewood width (and % of ring width)
New in 2025: The Reg version is now asprecise as the Density version.
Sapwood width
Indicated manually in the image by the operator.
Ring features
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.
Ring width
 
Ring angle
Angle of the ring boundary with respect to the measurement path direction.
 
 
Features
Basic
Reg
Density
Description
Background uneveness compensation
Removes lighting non-uniformity (note: it's better to do it before image acquisition).
Export ring density/blue reflectance profile
Saves rings (calibrated) density or blue reflectance profile in WinDENDRO data files.
Export ring intensity profile
Saves rings raw (uncalibrated) intensity profile in WinDENDRO data file.
Ring width graphic
Displays ring width in function of year.
Cross-dating, skeleton plots & detrending
Elementary cross-dating only.
Display earlywod-latewood boundaries in images and profile areas
Can also be moved by the operator.
Acquire images from scanners directly in WinDENDRO
Scanner must have a TWAIN driver, otherwise can only analyse images stored in jpg, tif, bmp & png files.
Can analyse images from cameras
Calibration required. Can be done on any scale (ruler) in a few mouse clicks.
Batch reanalysis
To reanalyse without operator supervision, images previously analysed under different analysis parameters or settings. E.g. change the calibration or the earlywood definition.
Image edition
Removes artefacts, debris or defects.
Multiple documents
Can work on more than one image at a time (up to 16). Each document has its own image (which can have multiple paths), graphic and data file.
XLSTEM software
For stem analysis.
Export/Import paths without image
For unusual application. Saves ring paths without the image to use them on other images or the same image at a later time. Paths are normally saved with the image.
Contrasts enhancements
To better see low contrasted rings.
Select a color channel to display
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).
Support for reduced resolution cell images
Makes rings easier to measure on very high resolution images in which cells are visible (images typically acquired for WinCELL).
Brother paths
Possibility to add paths to existing ones, sharing the same origin (such as a disk pith).
Skip gaps (cracks, void)
To exclude from the ring widths measurements areas such as cracks due to wood drying.
Image Temporary Markers
To help keep track of rings along a disk and find missing ones. Markers appearance (thickness, color) can be changed and can have an identification name.
Customisable sample identification
Choose the meaning and type of some variables used to identify a sample before its analysis. This information is saved with the data.
Estimate missing ring to pith
When pith and some rings are missing from the image, WinDENDRO can estimate how many are missing from the neighboring rings' position and orientation.
Highlight rings in image with specific features
Choose the feature(s) on which differentiation will be done and highlight rings which are differents.
Adaptative sensitivity selector
Adjust the ring detection sensitiviy in function of position on the sample to account for larger rings at the pith and narrower rings toward bark.
Scanner calibration
Make you own scanner calibration (if you didn't buy it from us).
Can analyse 16 bits per pixels grey levels images and 48 bits per pixels color images
16 bits/pixel grey levels images (or 48 bits color images) produce more precise Density and Blue Reflectance analyses than 8 bits (or 24 bits for color).
Can analyse 8 bits per pixels grey levels images and 24 bits per pixels color images
Standard images produced by all scanners and cameras.
Paths in any direction
Trace paths to measure rings anywhere in the image and in any direction.
Multi-segments paths
Paths that have more than one segment and can change direction at connectiing points.
Tangent to ring boundary
Ring widths are more precise when they are oriented to follow the rings' boundary direction.
Measurements visible over the images
Lines indicates where rings are measured and their angular orientation. The rings' number and year are displayed next to them.
WinDENDRO & Decadal file support
Save rings' width and other data in WinDENDRO's format or Tucson's decadal format.
Printed and pdf manuals
Printed manual shipped with the order. Pdf files stored on the WinDENDRO key along with software.
Save data from pith to bark / bark to pith pith
√/-
√/√
√/√
The order or rings' data saving (first to last detected or the reverse).
32 & 64 bit versions
The 64 bit version handle much larger images and is faster.