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A single sensor camera captures only one intensity value in a pixel known as the raw/unprocessed image. The raw or incomplete image is reconstructed to a full colour image by the process called demosaicking. The proposed work introduces an error efficient demosaicking algorithm. The efficient prior error reduction technique helps to obtain better results. The demosaicked green image is a guide to the residual demosaicking process. The conventional demosaicking is replaced by the residual demosaicking. The standard Kodak and McMaster datasets are employed in the experimental analysis. The proposed methodology has produced optimal performance with reduced error compared to the conventional demosaicking algorithms.