In remote sensing to add 7 band images to form one image what is the function in matlab. to combine all band images to one image
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In remote sensing to add 7 bands of images will get to form one image what is the function in matlab. To combine all band images to one image what is procedure?
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Image Analyst
2016-12-18
You'd have to do a weighted sum to create red, green, and blue channels. The 7 weights will be different for each RGB channel.
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Image Analyst
2016-12-18
You can use the addition and multiplication operators. For example
redChannel = wr1 * specImag1 + wr2 * specImag2 + wr3 * specImag3 + wr4 * specImag4 + wr5 * specImag5 + wr6 * specImag6 + wr7 * specImag7
Then do the same for green channel and blue channel:
greenChannel = wg1 * specImag1 + wg2 * specImag2 + wg3 * specImag3 + wg4 * specImag4 + wg5 * specImag5 + wg6 * specImag6 + wg7 * specImag7
blueChannel = wb1 * specImag1 + wb2 * specImag2 + wb3 * specImag3 + wb4 * specImag4 + wb5 * specImag5 + wb6 * specImag6 + wb7 * specImag7
Finally, use cat to create an RGB image from the component channels:
% Recombine separate color channels into a single, true color RGB image.
rgbImage = cat(3, redChannel, greenChannel, blueChannel);
I don't know what you want to use for the weights wr, wg, and wb. You might start off with the chromaticity curves if all your spectral channels are in the visible region.
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