Are you interested in reasonable tools for forest survey? - Yes, we have a solution for you! 

They are propositions of forest survey by using smartphone plus alpha.

• Tree height measurement (similar to Blume Leiss)

• Circle plot sampling, missing line, or area survey (similar to Trupulse)

• 500 meter square drone survey (for autopilot)

• 360 degree photo Bitterlich analysis (Relascope)

This App is designed for tree height measurement. Before starting the tree height measurement, please prepare distance measurement tools such as measuring tape or laser range finder.

Simple steps of tree height measurement

1  Measure the distance between surveyor and target tree

2  Input horizontal distance

3 Focus on the top/bottom of tree, and tap "SET" button

4 Tap "CAL" button for tree height calculation

1 Installation

Camera does not work just after the installation. Please finish App at once, and restart again.

Trees app is installable to API level 23 (ver 6, Marshmallow) or later version of Android smartphone.

2 Magnetic compass

Magnetic compass may be defected by strong magnetized field such as PC, Car, and show the different direction. Before measure the magnetic direction properly, please shaffle your phone as figure of eight (8).

3 Tree height

(1) Input horizontal distance.

(2) Target tree top with center cross marker, and tap the "SET" button of tree top.

(3) Target tree bottom with center cross marker, and tap the "SET" button of tree bottom.

(4) Tap "CAL" button for tree height calculation.

* Any time you can re-tap the "SET" and "CAL" button.

** Horizontal distance should be measured by other tools such as measuring tape or laser range finder.

4 Tree species

Tree species data is input manually, or selected from spinner list. Name list is stored in "00_Species_Data.txt" file in "ForestInventory" folder. You can edit it freely.

5 Diameter

Diameter should be measured manually by measuring tape or caliper.

6 Record

When you tap "RECORD" button, each tree data is stored into "YYYYMMDD_data.csv" in "ForestInventory" folder. 

* Magnetic direction and GPS data is recorded when "SET" button of tree bottom is tapped.

1. Install from following link

https://play.google.com/store/apps/details?id=com.forest.diameter

2. How to calibrate

(1) Find an object of which size and distance known

(2) Set DISTANCE and DIAMETER (size)

(3) Set the width between white lines by width adjusting slide bar (at right side), and zoom bar (at bottom)

(4) Tap SET button, then lens magnification rate is recorded, and move to measurement mode

(5) Re-calibrating available anytime from MENU-RECALIBRATE

3. How to measure

(1) Set the DISTANCE between the object and surveyor

(2) Set the width between white lines by width adjusting slide bar (at right side), and zoom bar (at bottom)

(3) Read DIAMETER

4. Preference Setting

(1) Maximum magnification rate by zoom bar.

Default setting value is 3. You can select the value from 3, 5 and 10.

(2)  Display of detailed information

  Real time Height angle, Azimuth, Camera roll will be

After change the preference setting, App should be restarted.

Height angle adjustment

Diameter data is automatically adjusted in accordance with height view angle. Height angle adjustment is disabled during calibration mode.

1. Install from following link

https://play.google.com/store/apps/details?id=com.forest.line

2. How to measure

(1) Find two object of which distance known

(2) Select target (A or B) by Point set button

(3) Set DISTANCE by pop up dial

(4) Set view angle to the object and tap ANGLE button

(5) Change the target by Point set button, and repeat same process

3. Read the result

All of results consists of SD, HD, VD, Inc, Azim, which are,

SD = Slope distance (direct distance)

HD = Horizontal distance (calculated by view angle)

VD = Vertical distance (calculated by view angle)

Inc = Inclination (vertical view angle)

Azim = Azimuth (horizontal view angle with magnetic field sensor)

1. Install from following link

https://play.google.com/store/apps/details?id=com.forest.area

2. How to Use

  (1) Set file name from selection or type New name

  (2) Move to SURVEY or DATA

3. How to SURVEY

  (1) Set Distance

  (2) Set Angle

  (3) Tap RECORD

4. How to retrieve DATA

  (1) Tap line for moving or deleting data

  (2) Long Tap for editing the data

  (3) Retrieve CSV file from menu 

1. Install from following link

https://play.google.com/store/apps/details?id=com.forest.editor

2. Tap icon for starting the editor

3. Tap option menu of "Open" for editing existing files

4. "Save" for text file saving

This is windows application for 360 photos analysis. Basal area is retrieved as the result of Bitterlich method analysis.

1. Download the application from the this link

2. Drag & drop photos into Window

3. Resize & move photos by mouse wheel and mouse drag

4. Right click for counting trees

5. Left click for editing the marker

6. Double click for pulling out Data or Factors menu

7. Click the row on the table for changing the photo

This application is inspired  by "Forest Measuring Tool" application which developed by JAFTA. Please refer the information of original application from below;

www.jafta.or.jp/index-e.html