how to get the mean of different images covered the same area?

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mahesh chathuranga
mahesh chathuranga 2014-3-25
回答： Image Analyst 2014-3-25
i have 7 days precipitation data images(tif format)of same area.i want to get the average of this seven images.(pixel wise average) it means average image of this 7 images.how to do it?

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回答（1 个）

Image Analyst
Image Analyst 2014-3-25
Try this:
averageImage = (double(image1) + double(image2) + double(image3) + double(image4) + double(image5) + double(image6) + double(image7)) / 7;
Then to get the mean, it depends on how the area is defined. If it's a box, then you can use mean2().
meanValue = mean2(averageImage(row1:row2, col1:col2));
If it's a binary mask
meanValue = mean(averageImage(maskImage));

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