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MCC full disc images are actually obtained in perspective geometry. These images have been rectified using geometric correction steps to align to the Mars global map including a map projection step. Each one of the full disc images covers partial portion of the Mars disc but not complete. While mosaicing the images, relative geometric differences were removed by additional image registration procedure. A seamless Mars full disc canvas was prepared, adjusting the colour differences between images.

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Quelle: ISRO