Planthealth

Description:

Plant Health and Photosynthetic Activity Quantification using Near Infra Red Images

Language: C++

Date: 17th December 2014

Author: Nick Arini

References:

http://publiclab.org/wiki/near-infrared-camera http://publiclab.org/notes/cfastie/04-20-2013/superblue http://www.fsnau.org/downloads/Understanding_the_Normalized_Vegetation_Index_NDVI.pdf http://www.raspberrypi.org/whats-that-blue-thing-doing-here/ http://infragram.org/

Usage:

This program will take an infrablue image (from a NoIR camera with blue filter) in PNG format. It will optionally output a Normalised Difference Vegetation Index (NDVI) Image scaled 0-255 Additionally it will auto threshold this image into vegetation/non vegetation and sum over the NDVI values for the vegetation to produce an overall relative metric for vegetation health/photosynthetic activity

   Usage: planthealth [-h] [-d] [-b] [-o output.png] input.png
	-h Display this help message.
	-d Verbose output.
	-b Output the bitmap image instead of the NDVI.
	-o Output the Scaled NDVI image to [output].
	   Input and Output images must be PNG Format.

planthealth -d -o ndvi.png infrablue.png

The sample image infrablue.png is included in the repository:

The output should look like this:

To output the thresholded bitmap instead of the scaled NDVI image use the -b flag:

planthealth -d -b -o bitmap.png infrablue.png

The bitmap should look like this:

Installation:

The only dependency is lodepng which can be found here: http://lodev.org/lodepng/

It is included here for simplicity.

To Build Type:

git clone https://github.com/nickarini/planthealth.git
./autogen.sh
./configure
make install