NDVI image composite over South America

Download the Year2000.zip file from the menu on the right.

We are going to work with one image at a time, because we need to convert these images to “image with LUT” in order to be able to apply a Look Up Table (LUT) that will allow us to easily observe the NDVI changes. The next step will consist in saving the image created as a BMP, PNG, JPG or TIFF. Once the twelve images are saved, we will create the animation.  
 

• Open the TIFF image: File/Open/*.TIFF (Year2000.tiff).
• Open Year2000.tif Channel 1 as grayscale and convert it into an image with LUT (Image/Covert to/Image with LUT).
• A colour bar will appear at the bottom of the image. Click twice on the bar and the LUT Editor will appear. The LUT Editor will allow us to change the colour palette from a greyscale palette to a colour palette.
• Click on Open LUT and select the ndvi .pal file. The .pal extension tells us that this file is an ASCII file that contains a table of numbers. Each of the 256 lines are separated into three columns and have values that range between 0 and 255. Each value corresponds to a different colour.
• Save the image created as a BMP, PNG, JPG or TIFF. Do this for all images. Assign a name to each image and keep the correct order for the months of the year, e.g. by naming the first month of the year, January (i.e. channel 1 in the tiff image) with the number one: “1_2000.png”.
• Once all twelve images are saved, open Tools/Image Animation. This will bring up the 'Select Files for Animation' window. Choose the proper animation speed. You can see the number of the slide by activating the Active Slider. You can save the animation as an mpeg file by clicking on Write MPEG.