I have purchased infragram plant camera for find NDVI index of plant. I share camera's information link for your reference. http://store.publiclab.org/collections/diy-infrared-photography/products/infragram-point-shoot-plant-cam
I captured various plant images using these camera for finding NDVI Index.I converted these captured images into NDVI images using infragram's python scripts,fiji software utilities and infragram 's on-line web server utilities,But I could not get accurate NDVI index for plant.
I share captured image and NDVI image for your information.
captured image of infragram 's plant camera (original image)
python script converted NDVI image
Infragram's on-line web server converted NDVI image.
I am also get the different different NDVI index of same image using different different NDVI conversion utilities.
I found some suggestion like calibrate the camera on public lab's forum discussion . But my queries are, 1)How to calibrate infragram plant camera ? 2)why i get different different NDVI index of same image ?
Any help would be greatly appreciated.